Medical imaging diagnostic equipment, X-ray CT equipment, and information processing method

Abstract

To provide an image diagnostic system having portability while enabling photographing at a high output.SOLUTION: According to an embodiment, a medical image processing system is a portable medical image diagnostic system and includes a connection part, a selection part, a detection part, and a determination part. The connection part is attachably / detachably connectable with a portable rechargeable battery. The detection part detects a connection state of the rechargeable battery to the connection part. and on the basis of a photographing condition related to the subject photographing and the connection state detected by the detection part, the determination part determines whether or not subject photographing is executable.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The embodiments disclosed in this specification and the drawings relate to a medical imaging diagnostic apparatus, an X-ray CT apparatus, and an information processing method.

[0002] In recent years, medical imaging diagnostic apparatuses such as portable X-ray computed tomography (CT) apparatuses have come into circulation in the market.

[0003] By the way, in an X-ray CT apparatus, since a large amount of power is required for high-output imaging, there is a possibility that high-output imaging cannot be performed in a place without dedicated power supply equipment.

[0004] Conventionally, a hybrid-type X-ray CT apparatus that operates by power supplied from an external power source and a storage battery provided inside a gantry device or the like is also known. However, in a conventional hybrid-type X-ray CT apparatus, a large storage battery is required to perform high-output imaging, so there is a possibility that portability is impaired.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] One of the problems to be solved by the embodiments disclosed in this specification and the drawings is to provide an image diagnostic apparatus having portability that enables high-output imaging. However, the problems to be solved by the embodiments disclosed in this specification and the drawings are not limited to the above problems. Problems corresponding to the respective effects of each configuration shown in the embodiments described later can also be regarded as other problems.

Means for Solving the Problems

[0007] The medical image processing apparatus according to this embodiment is a portable medical image diagnostic apparatus comprising a connection unit, a selection unit, a detection unit, and a determination unit. The connection unit is capable of detachably connecting a portable rechargeable battery. The detection unit detects the connection status of the rechargeable battery to the connection unit. The determination unit determines whether or not imaging of the subject is possible based on the imaging conditions related to the imaging of the subject and the connection status detected by the detection unit. [Brief explanation of the drawing]

[0008] [Figure 1] Figure 1 is a block diagram showing an example of the configuration of a portable X-ray CT scanner according to an embodiment. [Figure 2] Figure 2 is a schematic diagram showing an example of the configuration of a battery unit according to the embodiment. [Figure 3] Figure 3 is a flowchart showing an example of a process performed by a portable X-ray CT scanner according to this embodiment. [Figure 4] Figure 4 is a schematic diagram showing an example of the configuration of a battery unit according to Modification 2. [Figure 5] Figure 5 is a block diagram showing an example of the configuration of a portable X-ray CT scanner according to Modification 3. [Figure 6] Figure 6 is a flowchart showing an example of the processing performed by the portable X-ray CT scanner according to Modification 3. [Figure 7] Figure 7 is a flowchart showing an example of the processing performed by the portable X-ray CT scanner according to Modification 4. [Figure 8] Figure 8 is a flowchart showing an example of the processing performed by the portable X-ray CT scanner according to Modification 5. [Figure 9] Figure 9 is a flowchart showing an example of the processing performed by the portable X-ray CT scanner according to Modification 6. [Modes for carrying out the invention]

[0009] The medical imaging diagnostic apparatus according to the embodiment will be described below with reference to the drawings. In the following embodiment, parts with the same reference numerals perform the same operation, and redundant explanations will be omitted as appropriate.

[0010] Figure 1 is a block diagram showing an example of the configuration of a portable X-ray CT scanner 1 according to an embodiment. The portable X-ray CT scanner 1 is an example of a portable medical imaging diagnostic device.

[0011] Here, a portable medical imaging device refers, for example, to a medical imaging device that can be moved on the floor. A portable medical imaging device is one that can be moved on the floor by means of casters, wheels, etc., on the medical imaging device or peripheral equipment connected to it. Alternatively, a portable medical imaging device may be one that can be carried by hand, for example, without casters or wheels.

[0012] As shown in Figure 1, the portable X-ray CT scanner 1 includes a stand unit 10, a battery unit 20, a patient bed unit 30, and a console unit 40.

[0013] The stand 10, the patient bed 30, and the console 40 are supported by a support base 101. The support base 101 is equipped with casters 102 on its bottom surface. The stand 10, the patient bed 30, and the console 40 can be moved by the casters 102. This allows, for example, even if an X-ray CT scanner is not provided in the operating room, the portable X-ray CT scanner 1 can be moved into the operating room to perform surgery or other procedures using the X-ray CT scanner.

[0014] Incidentally, the portable X-ray CT apparatus 1 may be provided with a power assist mechanism. The power assist mechanism is connected to the casters 102 and 203. In this case, the power assist mechanism generates power in the direction of the force by which the user pushes the portable X-ray CT apparatus 1 by a prime mover such as a motor, and moves the casters 102 and 203 by rotating them. Incidentally, the power assist mechanism may be connected to only one of the casters 102 or 203.

[0015] Also, for example, the portable X-ray CT apparatus 1 may be provided with a self-propelled mechanism that moves along a rail. Also, for example, the portable X-ray CT apparatus 1 may be provided without a power assist mechanism or a self-propelled mechanism, and may be moved only by the force by which a person pushes the portable X-ray CT apparatus 1.

[0016] Incidentally, when the portable X-ray CT apparatus 1 is provided with a power assist mechanism or a self-propelled mechanism, the power assist mechanism or the self-propelled mechanism may be operated by the power supplied from the battery unit 20, or may be operated by the power supplied from a battery or the like separate from the battery unit 20.

[0017] In the present embodiment, the longitudinal direction of the rotation axis of the rotation frame 13 in the non-tilt state is defined as the Z-axis direction, the direction orthogonal to the Z-axis direction and toward the column supporting the rotation frame 13 from the rotation center is defined as the X-axis, and the direction orthogonal to the Z-axis and the X-axis is defined as the Y-axis.

[0018] The gantry device 10 has an imaging system 19 for taking a medical image used for diagnosis. The imaging system 19 is composed of, for example, an X-ray tube 11, an X-ray detector 12, a wedge 16, and a collimator 17. That is, the gantry device 10 is a device having an imaging system 19 that irradiates a subject P with X-rays and collects projection data from the detection data of the X-rays transmitted through the subject P.

[0019] The gantry device 10 also has an opening for accommodating the subject P. The top plate 33 on which the subject P is placed is accommodated in the opening with the side where the bed device 30 is provided as an entrance.

[0020] The gantry device 10 includes an X-ray tube 11, a wedge 16, a collimator 17, an X-ray detector 12, an X-ray high-voltage device 14, a DAS (Data Acquisition System) 18, a rotating frame 13, a control device 15, and a bed device 30.

[0021] The X-ray tube 11 is a vacuum tube that irradiates thermoelectrons from the cathode (filament) toward the anode (target) by applying a high voltage from the X-ray high-voltage device 14. For example, the X-ray tube 11 includes a rotating anode type X-ray tube that generates X-rays by irradiating thermoelectrons to the rotating anode.

[0022] The wedge 16 is a filter for adjusting the X-ray dose of the X-rays irradiated from the X-ray tube 11. Specifically, the wedge 16 is a filter that transmits and attenuates the X-rays irradiated from the X-ray tube 11 so that the X-rays irradiated from the X-ray tube 11 to the subject P have a predetermined distribution.

[0023] The wedge 16 is, for example, a wedge filter or a bow-tie filter, and is a filter formed by processing aluminum to have a predetermined target angle and a predetermined thickness.

[0024] The collimator 17 is a lead plate or the like for narrowing the irradiation range of the X-rays that have passed through the wedge 16, and forms a slit by combining a plurality of lead plates or the like. Note that the collimator 17 may also be referred to as an X-ray aperture.

[0025] The X-ray detector 12 detects X-rays irradiated from the X-ray tube 11 and passed through the subject P, and outputs an electrical signal corresponding to the amount of X-rays to the data acquisition device (DAS 18). The X-ray detector 12 has, for example, multiple rows of X-ray detection elements arranged in the channel direction along a single arc centered on the focal point of the X-ray tube 11. The channel direction refers to the circumferential direction of the rotating frame 13.

[0026] The X-ray detector 12 has, for example, multiple rows of X-ray detection elements arranged in the channel direction along a single arc centered on the focal point of the X-ray tube 11. The X-ray detector 12 has, for example, a structure in which multiple rows of X-ray detection elements, each arranged in the channel direction, are arranged in the slice direction (also called the axial direction or column direction).

[0027] Furthermore, the X-ray detector 12 is an indirect conversion type detector having, for example, a grid, a scintillator array, and a photosensor array. The scintillator array has multiple scintillators, and each scintillator has a scintillator crystal that outputs light in a quantity of photons corresponding to the amount of incident X-rays. The grid is positioned on the X-ray incident side of the scintillator array and has an X-ray shielding plate that has the function of absorbing scattered X-rays.

[0028] The optical sensor array has the function of converting the amount of light from the scintillator into an electrical signal, and includes optical sensors such as photomultiplier tubes (PMTs). The X-ray detector 12 may be a direct conversion type detector that has a semiconductor element that converts incident X-rays into an electrical signal.

[0029] The X-ray high-voltage device 14 includes a high-voltage generator having an electrical circuit such as a transformer and a rectifier, and a function to generate a high voltage to be applied to the X-ray tube 11, and an X-ray control device that controls the output voltage according to the X-rays irradiated by the X-ray tube 11. The high-voltage generator may be of the transformer type or the inverter type.

[0030] The X-ray high-voltage device 14 may be mounted on the rotating frame 13, or it may be mounted on the fixed frame (not shown) side of the rigging device 10. The fixed frame is a frame that rotatably supports the rotating frame 13.

[0031] The DAS18 includes an amplifier that amplifies the electrical signals output from each X-ray detection element of the X-ray detector 12, and an A / D converter that converts the electrical signals into digital signals, thereby generating detection data. The detection data generated by the DAS18 is transferred to the console device 40. The detection data is, for example, a sinogram.

[0032] A sinogram is projection data generated for each position of the X-ray tube 11 (hereinafter also called the view angle) and for each X-ray detection element, showing the correspondence between the view direction and the channel direction. Here, the view direction corresponds to the view angle and means the direction of X-ray irradiation.

[0033] Furthermore, when a single scan is performed using only one array of detection elements in the X-ray detector 12, one sinogram can be generated for each scan. However, when a helical scan or volumetric scan is performed using multiple arrays of detection elements in the X-ray detector 12, multiple sinograms can be generated for each scan.

[0034] The rotating frame 13 is an annular frame that supports the X-ray tube 11 and the X-ray detector 12 opposite each other, and rotates the X-ray tube 11 and the X-ray detector 12 using the control device 15. In addition to the X-ray tube 11 and the X-ray detector 12, the rotating frame 13 also supports the X-ray high-voltage device 14 and the DAS 18.

[0035] The rotating frame 13 is rotatably supported by a non-rotating part of the mounting device (for example, a fixed frame, which is not shown in Figure 1). The rotation mechanism includes, for example, a motor that generates rotational driving force and a bearing that transmits the rotational driving force to the rotating frame 13 to rotate it. The motor is provided, for example, in the non-rotating part, and the bearing is physically connected to the rotating frame 13 and the motor, so that the rotating frame 13 rotates in accordance with the rotational force of the motor.

[0036] The rotating frame 13 and the non-rotating portion are each provided with either a non-contact or contact-type communication circuit, thereby enabling communication between the unit supported by the rotating frame 13 and the non-rotating portion or an external device of the mounting device 10.

[0037] For example, if optical communication is used as the contactless communication method, the detection data generated by DAS18 is transmitted via optical communication from a transmitter having a light-emitting diode (LED) provided on the rotating frame 13 to a receiver having a photodiode provided on the non-rotating part of the mounting device, and then transferred by the transmitter from the non-rotating part to the console device 40.

[0038] In addition to the above, other communication methods may include non-contact data transmission methods such as capacitive coupling and radio wave methods, as well as contact-type data transmission methods using slip rings and electrode brushes.

[0039] The control device 15 includes a processing circuit with a CPU and other components, and a drive mechanism with motors and actuators. The control device 15 receives input signals from an input interface 43, which will be described later, attached to the console device 40 or the support device 10, and has the function of controlling the operation of the support device 10 and the bed device 30.

[0040] For example, the control device 15 receives input signals and performs control to rotate the rotating frame 13, control to tilt the support structure 10, and control to operate the bed structure 30 and the top plate 33. The control to tilt the support structure 10 is achieved by the control device 15 rotating the rotating frame 13 around an axis parallel to the X-axis direction based on tilt angle information input through an input interface attached to the support structure 10.

[0041] The control device 15 may be installed on the mounting device 10 or on the console device 40.

[0042] The battery unit 20 supplies power to the portable X-ray CT scanner 1. The portable X-ray CT scanner 1, in principle, receives power from an external power source (for example, commercial power) to drive the stand unit 10, the patient table unit 30, and the console unit 40.

[0043] However, if commercial power is used as an external power source, for example, the supplied power may be insufficient, making high-power shooting impossible. In the following explanation, "external power source" refers to "commercial power source" unless otherwise specified.

[0044] The battery unit 20, along with an external power source, supplies power to the portable X-ray CT scanner 1 and supports the operation of the portable X-ray CT scanner 1. The battery unit 20 will be described below with reference to Figure 2. Figure 2 is a schematic diagram showing an example of the configuration of the battery unit 20.

[0045] As shown in Figure 2, the battery unit 20 comprises a battery box 201, a power cable 202, and casters 203. The battery is mounted in the battery box 201. Since the battery box 201, with the battery mounted, is movable by the casters 203, the battery can be considered an example of a portable storage battery.

[0046] Here, a portable battery refers to, for example, a battery that can be moved on the floor. A portable battery is one that can be moved on the floor by means of casters, wheels, etc., on the battery or peripheral equipment connected to it. Alternatively, a portable battery may be one that can be carried by hand, without casters or wheels, for example.

[0047] The battery box 201 manages the charging and discharging of the installed batteries. The battery box 201 may also be configured to allow for the detachable connection of multiple batteries.

[0048] The battery box 201 supplies power stored in the battery to the portable X-ray CT device 1 via the power cable 202. The battery box 201 also receives power from an external power source connected to the portable X-ray CT device 1 via the power cable 202 and charges the battery it is mounted on. In this embodiment, if the battery is not fully charged, the battery box 201 charges the battery except during the time when the portable X-ray CT device 1 is scanning the subject P.

[0049] Furthermore, if the portable X-ray CT scanner 1 can be stably supplied with power from an external power source even while the battery is being charged, the battery box 201 may charge the battery during scanning.

[0050] The power cable 202 is a cable for electrically connecting the battery box 201 and the portable X-ray CT scanner 1. By connecting the power cable 202 to the cable connection part 103 of the portable X-ray CT scanner 1, the battery box 201 and the portable X-ray CT scanner 1 are electrically connected. The cable connection part 103 is an example of a connection part, as it allows for the detachable connection of the battery box 201.

[0051] The casters 203 are provided on the bottom surface of the battery box 201. The casters 203 make it possible to move the battery unit 20. The battery unit 20 may also be equipped with the power assist mechanism or self-propelled mechanism described above.

[0052] Returning to Figure 1, the patient bed device 30 is a device for placing and moving the subject P to be scanned, and comprises a base 31, a patient bed drive device 32, a top plate 33, and a support frame 34. The base 31 is supported by a support base 101. The patient bed device 30 can be moved together with the frame device 10 and the console device 40 by casters 102 provided on the bottom surface of the support base 101.

[0053] Furthermore, the top plate 33 and the support frame 34 may be configured to be detachable from the base 31. This prevents the top plate 33 and the support frame 34 from colliding with equipment or other objects within the facility when moving the portable X-ray CT scanner 1, allowing for smoother movement.

[0054] The base 31 is a housing that supports the support frame 34 so that it can move vertically. The bed drive device 32 is a motor or actuator that moves the top plate 33 on which the subject P is placed in its long axis direction (Z axis direction in Figure 1).

[0055] The top plate 33, provided on the upper surface of the support frame 34, is a plate on which the subject P is placed. In addition to moving the top plate 33, the bed drive device 32 may also move the support frame 34 along the long axis of the top plate 33.

[0056] The bed drive unit 32 moves the base 31 vertically according to the control signal from the control device 15. The bed drive unit 32 also moves the top plate 33 in the long axis direction (Z axis direction) according to the control signal from the control device 15.

[0057] The console device 40 accepts the operator's input to the portable X-ray CT scanner 1 and reconstructs X-ray CT image data from the X-ray detection data collected by the stand device 10. The console device 40 includes a memory 41, a display 42, an input interface 43, and a processing circuit 45.

[0058] Memory 41 can be implemented using semiconductor memory elements such as RAM (Random Access Memory) or flash memory, a hard disk, or an optical disc. Memory 41 stores, for example, projection data and reconstructed image data. Memory 41 also stores the imaging protocol.

[0059] Here, the imaging protocol defines the procedures for controlling the imaging system 19 to image the subject P and acquire an image. The imaging protocol is a set of parameters such as the imaging area, imaging conditions, imaging range, reconstruction conditions, operation of the rigging device 10 (imaging system 19), and operation of the patient bed device 30. The imaging protocol may also be a set of parameters for performing multiple scans sequentially.

[0060] For example, if there is a protocol called "contrast-enhanced scan," then a set of parameters for performing a series of scans—"scanning," "non-contrast scan," "prep scan (contrast agent monitoring)," and "contrast-enhanced scan (multiple time phases)"—is included in a single "contrast-enhanced scan" protocol.

[0061] Furthermore, the memory 41 stores dedicated programs for implementing the system control function 451, preprocessing function 452, reconstruction processing function 453, image processing function 454, first detection function 455, second detection function 456, selection function 457, estimation function 458, judgment function 459, display control function 460, and battery control function 461, which will be described later.

[0062] The display 42 is a monitor for the operator to refer to and displays various information. For example, the display 42 outputs medical images (CT images) generated by the processing circuit 45, and a GUI (Graphical User Interface) for receiving various operations from the operator. For example, the display 42 is a liquid crystal display or a CRT (Cathode Ray Tube) display.

[0063] The input interface 43 receives various input operations from the operator and converts the received input operations into electrical signals, which are then output to the processing circuit 45. For example, the input interface 43 receives from the operator the acquisition conditions when acquiring projection data, the reconstruction conditions when reconstructing CT images, and the image processing conditions when generating post-processed images from CT images.

[0064] Furthermore, the input interface 43 may be implemented using, for example, a mouse, keyboard, trackball, switch, button, joystick, etc. The input interface 43 may also be provided on the mounting device 10. Alternatively, the input interface 43 may consist of the console device 40 main unit and a wirelessly connected tablet terminal or the like.

[0065] The processing circuit 45 controls the operation of the entire portable X-ray CT apparatus 1. The processing circuit 45 includes, for example, a system control function 451, a preprocessing function 452, a reconstruction processing function 453, an image processing function 454, a first detection function 455, a second detection function 456, a selection function 457, an estimation function 458, a judgment function 459, a display control function 460, and a battery control function 461.

[0066] Here, the first detection function 455 and the second detection function 456 are examples of detection units. The selection function 457 is an example of a selection unit. The estimation function 458 is an example of an estimation unit. The judgment function 459 is an example of a judgment unit. The system control function 451 and the display control function 460 are examples of control units.

[0067] In this embodiment, each processing function performed by the constituent elements, namely the system control function 451, preprocessing function 452, reconstruction processing function 453, image processing function 454, first detection function 455, second detection function 456, selection function 457, estimation function 458, judgment function 459, display control function 460, and battery control function 461, is stored in memory 41 in the form of a program that can be executed by a computer. The processing circuit 45 is a processor that reads the program from memory 41 and executes it to realize the function corresponding to each program.

[0068] In other words, the processing circuit 45, when each program has been loaded, will have the functions shown in the processing circuit 45 of Figure 1.

[0069] In Figure 1, it was explained that the processing functions performed by the system control function 451, preprocessing function 452, reconstruction processing function 453, image processing function 454, first detection function 455, second detection function 456, selection function 457, estimation function 458, judgment function 459, display control function 460, and battery control function 461 are realized by a single processing circuit 45. However, the processing circuit 45 may be configured by combining multiple independent processors, and each processor may realize the functions by executing a program.

[0070] In other words, each of the above functions may be configured as a program, with one processing circuit executing each program, or a specific function may be implemented in a dedicated, independent program execution circuit.

[0071] In the above explanation, the term "processor" refers to circuits such as CPUs (Central Processing Units), GPUs (Graphical Processing Units), Application Specific Integrated Circuits (ASICs), and Programmable Logic Devices (e.g., Simple Programmable Logic Devices (SPLDs), Complex Programmable Logic Devices (CPLDs), and Field Programmable Gate Arrays (FPGAs)).

[0072] The processor performs its functions by reading and executing the program stored in memory 41. Alternatively, instead of storing the program in memory 41, the processor may be configured to directly incorporate the program into its circuitry. In this case, the processor performs its functions by reading and executing the program incorporated into the circuitry.

[0073] The system control function 451 controls various parts of the portable X-ray CT scanner 1. For example, the system control function 451 controls various functions of the processing circuit 45 based on input operations received from the operator via the input interface 43.

[0074] Specifically, the system control function 451 accepts input such as user information for login (e.g., user ID) and subject information via the input interface 43. The system control function 451 also accepts input of the imaging protocol via the input interface 43.

[0075] The preprocessing function 452 generates data by applying preprocessing such as logarithmic transformation, offset processing, inter-channel sensitivity correction, and beam hardening correction to the detection data output from DAS18. Note that the data before preprocessing (detection data) and the data after preprocessing are sometimes collectively referred to as projection data.

[0076] The reconstruction processing function 453 generates CT image data by performing reconstruction processing on the projection data generated by the preprocessing function 452, using methods such as filtered back projection and iterative reconstruction according to the reconstruction conditions.

[0077] The image processing function 454 converts the CT image data generated by the reconstruction processing function 453 into tomographic image data of an arbitrary cross-section or three-dimensional image data using a known method, based on input operations received from the operator via the input interface 43. Note that the reconstruction processing function 453 may directly generate the three-dimensional image data.

[0078] The post-processing may be performed on either the console device 40 or an external workstation. Alternatively, it may be performed simultaneously on both the console device 40 and the workstation.

[0079] The post-processing defined here refers to the processing performed on images reconstructed by the reconstruction processing function 453. This includes, for example, Multi-Planar Reconstruction (MPR) display of the reconstructed image and rendering of volume data.

[0080] Furthermore, as a workstation, a computer equipped with a processor that implements image processing functions 454 and memory such as ROM and RAM as hardware resources can be used as appropriate.

[0081] The first detection function 455 detects the connection status between the portable X-ray CT scanner 1 and the external power supply. Specifically, if the portable X-ray CT scanner 1 and the external power supply are connected, the first detection function 455 detects that the external power supply is connected.

[0082] On the other hand, if the portable X-ray CT scanner 1 is not connected to an external power supply, the first detection function 455 detects that the external power supply is disconnected. In this embodiment, if it is detected that the external power supply is disconnected, the system control function 451 controls the portable X-ray CT scanner 1 so that even if it detects that the gantry is powered on, it cannot perform imaging of the subject P.

[0083] The second detection function 456 detects the battery status. For example, the second detection function 456 detects the connection status of the battery box 201 to the cable connection part 103 of the portable X-ray CT scanner 1.

[0084] When the battery box 201 is connected to the cable connection part 103, the second detection function 456 detects that the battery is connected. On the other hand, when the battery box 201 is not connected to the cable connection part 103, the second detection function 456 detects that the battery is not connected.

[0085] Furthermore, the second detection function 456, upon detecting that the battery is connected, detects the capacity of the battery installed in the battery box 201. If the battery box 201 contains multiple batteries, the capacity of each battery may be detected.

[0086] In this embodiment, the first detection function 455 and the second detection function 456 are provided by the portable X-ray CT apparatus 1, but the first detection function 455 and the second detection function 456 may be provided by an external device. For example, the battery unit 20 may be provided with a control device that controls the battery unit 20, and this control device may be equipped with the first detection function 455 and the second detection function 456.

[0087] The selection function 457 selects the imaging protocol. Specifically, the selection function 457 selects the imaging protocol based on the input of the imaging protocol received by the system control function 451. For example, if the user inputs the "contrast-enhanced scan" protocol, the selection function 457 selects the "contrast-enhanced scan" protocol as the imaging protocol to be executed.

[0088] The selection function 457 may also automatically select the imaging protocol based on the inspection order received from the RIS or other source.

[0089] The estimation function 458 estimates the amount of power required to execute the imaging protocol selected by the selection function 457 (hereinafter also referred to as the required power) based on the imaging conditions included in the imaging protocol. Specifically, the estimation function 458 estimates the required power by calculating the average power consumption (kWh) by multiplying the tube voltage (kV), tube current (mA), and continuous scan time in the selected imaging protocol.

[0090] The estimation function 458 may also estimate the required power consumption by considering the rotation speed of the gantry, etc. In this case, for example, the estimation function 458 corrects the calculated average power consumption by a predetermined correction value for each rotation speed of the gantry, and the selection function 457 estimates the required power consumption for the selected shooting protocol.

[0091] The determination function 459 determines whether or not it is possible to photograph the subject P based on the shooting conditions and the battery connection status to the cable connection part 103. The determination function 459 determines whether or not it is possible to execute the selected shooting protocol based on the estimated required power and the battery status detected by the second detection function 456.

[0092] Specifically, the determination function 459 first determines whether the selected shooting protocol can be executed without a battery connection. Note that whether or not it can be executed without a battery connection may be predetermined for each shooting protocol.

[0093] If it is possible to run the system without a battery connected, the determination function 459 determines that the selected shooting protocol can be executed. If it is not possible to run the system without a battery connected, and the battery is not connected, the determination function 459 determines that the selected shooting protocol cannot be executed.

[0094] If execution is impossible without a battery connected, and the battery is connected, the determination function 459 checks the detected battery capacity. If the battery capacity is above a predetermined threshold for each shooting protocol, the determination function 459 determines that the selected shooting protocol can be executed. On the other hand, if the battery capacity is below a predetermined threshold for each shooting protocol, the determination function 459 determines that the selected shooting protocol cannot be executed.

[0095] If it is determined that the selected imaging protocol can be executed, the system control function 451 controls each part of the portable X-ray CT scanner 1 to execute the selected imaging protocol. On the other hand, if it is determined that the selected imaging protocol cannot be executed, the system control function 451 suppresses the execution of the selected imaging protocol.

[0096] The display control function 460 controls the display of various screens on the display 42. For example, the display control function 460 controls the display of tomographic data of an arbitrary cross-section or three-dimensional image data generated by the image processing function 454 on the display 42. Also, for example, the display control function 460 controls the display of a GUI for accepting various operations from the user.

[0097] Furthermore, for example, if it is detected that the external power supply is not connected, the display control function 460 works in cooperation with the first detection function 455 to control the display 42 to display a message prompting the user to connect the portable X-ray CT device 1 to the external power supply. The display control function 460 continues to display this message on the display 42 until the external power supply is connected to the portable X-ray CT device 1.

[0098] Furthermore, for example, if the operation is impossible without a battery connection and the battery is not connected, the display control function 460 works in cooperation with the determination function 459 to display a message on the display 42 prompting the user to connect the battery.

[0099] In this case, the display control function 460 may also control the display 42 to display a message prompting the user to check if the battery is properly connected, or a message indicating that a battery with insufficient capacity may be connected. This is because, even if the battery is connected, the second detection function 456 may not be able to detect the battery connection if the battery is not properly connected or if the battery capacity is below a certain level.

[0100] Furthermore, for example, if execution is impossible without a battery connection and the battery capacity is insufficient, the display control function 460, in cooperation with the determination function 459, controls the display 42 to show the charging time for normal charging until the selected shooting protocol can be executed. At this time, the display control function 460 may also control the display 42 to show the charging time for rapid charging and a message to the user asking whether or not to use rapid charging. Normal charging and rapid charging will be described later.

[0101] In this embodiment, the display control function 460 controls the output of various display screens to the display 42, but the output destination of the display screens is not limited to the display 42. For example, the display control function 460 may output various display screens to a terminal device such as a smartphone connected to the portable X-ray CT scanner 1 via a network. In this case, the display screens are shown on the terminal device's display.

[0102] The battery control function 461 controls the charging and discharging of the battery installed in the battery box 201. Specifically, the battery control function 461 controls the charging of the battery installed in the battery box 201 when the subject P is not being scanned. In addition, the battery control function 461 controls the rapid charging of the battery when the user instructs it to perform rapid charging.

[0103] Here, rapid charging refers to charging by increasing the power supplied to the battery. Increasing the power supplied to the battery can shorten the charging time. Normal charging, on the other hand, refers to charging without increasing the power supplied to the battery. Rapid charging can put a strain on the battery and potentially accelerate its deterioration. Therefore, in this embodiment, rapid charging is performed only when instructed by the user.

[0104] Furthermore, it may be possible to pre-set whether to perform normal charging or fast charging. For example, if the setting is to perform fast charging, the battery control function 461 will always perform fast charging. In this case, the display control function 460 will not perform any control to display a message on the display 42 to ask the user whether or not to perform fast charging.

[0105] Next, we will explain the processes performed by the portable X-ray CT scanner 1. Figure 3 is a flowchart showing an example of the processes performed by the portable X-ray CT scanner.

[0106] First, the system control function 451 confirms that the gantry's power is turned ON (step S1). Next, the first detection function 455 detects the connection status between the portable X-ray CT device 1 and the external power supply (step S2). If it is detected that the portable X-ray CT device 1 is connected to the external power supply (step S2: Yes), the process proceeds to step S5.

[0107] On the other hand, if it is detected that the portable X-ray CT device 1 is not connected to an external power supply (step S2: No), the display control function 460 displays a message on the display 42 prompting the user to connect the portable X-ray CT device 1 to an external power supply (step S3). Next, the first detection function 455 detects the connection status between the portable X-ray CT device 1 and the external power supply again (step S4).

[0108] If it is detected that the portable X-ray CT scanner 1 is not connected to an external power supply (step S4: No), the first detection function 455 repeats the process in step S4 until it is detected that the portable X-ray CT scanner 1 is connected to an external power supply.

[0109] On the other hand, if it is detected that the portable X-ray CT scanner 1 is connected to an external power supply (step S4: Yes), the selection function 457 selects the imaging protocol to be executed (step S5). Specifically, the selection function 457 selects the imaging protocol to be executed based on the imaging protocol input received by the system control function 451.

[0110] Next, the estimation function 458 estimates the power consumption required for the imaging protocol selected by the selection function 457 (step S6). Specifically, the estimation function 458 calculates the average power consumption for the imaging protocol selected by the selection function 457 by multiplying the tube voltage, tube current, and continuous scan time for the selected imaging protocol.

[0111] Next, the determination function 459 determines whether the selected shooting protocol can be executed without a battery connection (step S7). Specifically, the determination function 459 determines whether it can be executed without a battery connection based on predetermined information for each shooting protocol regarding whether it can be executed without a battery connection or not.

[0112] If it is possible to run the device without a battery connection (Step S7: Yes), the process proceeds to Step S16. On the other hand, if it is not possible to run the device without a battery connection (Step S7: No), the second detection function 456 detects the connection status between the portable X-ray CT device 1 and the battery (Step S8). If it is detected that the portable X-ray CT device 1 is connected to the battery (Step S8: Yes), the process proceeds to Step S11.

[0113] On the other hand, if it is detected that the portable X-ray CT device 1 is not connected to the battery (step S8: No), the display control function 460 displays a message on the display 42 prompting the user to connect the battery to the portable X-ray CT device 1 (step S9). Next, the second detection function 456 detects the connection status between the portable X-ray CT device 1 and the battery again (step S10).

[0114] If it is detected that the portable X-ray CT device 1 is not connected to the battery (step S10: No), the second detection function 456 repeats the process of step S10 until it is detected that the portable X-ray CT device 1 is connected to the battery.

[0115] On the other hand, if it is detected that the portable X-ray CT scanner 1 is connected to a battery (step S10: Yes), the second detection function 456 detects the battery capacity. Next, the determination function 459 determines whether or not the battery capacity is insufficient (step S11). Specifically, the determination function 459 determines whether or not the battery capacity is insufficient based on the battery capacity threshold required for execution predetermined for each imaging protocol.

[0116] If the battery capacity is sufficient (step S11: No), the process proceeds to step S16. On the other hand, if the battery capacity is insufficient (step S11: Yes), the display control function 460 works in cooperation with the battery control function 461 to display on the display 42 the charging time for normal charging until the selected shooting protocol can be executed (step S12).

[0117] Next, the display control function 460 works in cooperation with the battery control function 461 to display a message on the display 42 asking the user whether or not to perform rapid charging. Then, the system control function 451 receives input from the user indicating whether or not to perform rapid charging (step S13).

[0118] If an input indicating that rapid charging should be performed is received (step S13: Yes), the battery control function 461 performs rapid charging of the battery installed in the battery box 201 (step S14). Then, when the battery capacity exceeds the threshold of battery capacity required for execution predetermined for each shooting protocol, the process proceeds to step S16.

[0119] On the other hand, if an input indicating that rapid charging should not be performed is received (step S13: No), the battery control function 461 continues normal charging of the battery installed in the battery box 201 (step S15). Then, when the battery capacity exceeds the threshold of the battery capacity required to execute each imaging protocol, which is predetermined for each imaging protocol, the system control function 451 controls each part of the portable X-ray CT scanner 1 to execute the selected imaging protocol and terminate this process (step S16).

[0120] The portable X-ray CT apparatus 1 according to the embodiment described above is movable by casters 102. The portable X-ray CT apparatus 1 also includes a battery box 201 equipped with a battery. The battery box 201 is movable by casters 203.

[0121] Furthermore, the portable X-ray CT scanner 1 selects an imaging protocol, estimates the power required for that protocol, detects the battery status, and determines whether the imaging protocol can be executed based on the estimated power required and the connection status between the cable connection part 103 and the battery box 201. If it can be executed, the protocol is executed; otherwise, the execution of the protocol is suppressed.

[0122] For example, if the portable X-ray CT scanner 1 is unable to execute the imaging protocol and the battery is not connected to the portable X-ray CT scanner 1, it will suppress the execution of the imaging protocol and issue a notification prompting the user to connect the battery.

[0123] This allows, for example, a user to connect a fully charged battery and have the portable X-ray CT scanner 1 execute the selected imaging protocol. Therefore, even if an imaging protocol requiring high power is selected, the portable X-ray CT scanner 1 can execute that protocol. In other words, the portable X-ray CT scanner 1 according to this embodiment is portable and capable of high-power imaging.

[0124] Furthermore, the portable X-ray CT scanner 1 can charge the battery mounted in the battery box 201 using an external power supply connected to the portable X-ray CT scanner 1. In addition, if the selected imaging protocol cannot be executed and the battery capacity is insufficient, the portable X-ray CT scanner 1 will display the charging time until the selected imaging protocol can be executed on the display 42.

[0125] This allows users to understand how long they need to wait before executing their chosen shooting protocol. Knowing the waiting time allows users to decide whether to wait for charging to complete, consider other available shooting protocols, or connect a fully charged battery.

[0126] Furthermore, if the selected imaging protocol is not executable and the battery capacity is insufficient, the portable X-ray CT scanner 1 will display a message on the display 42 asking the user whether or not to perform rapid charging, along with the charging time required until the selected imaging protocol can be executed.

[0127] This allows users to decide, for example, whether to wait for the battery to finish charging using normal charging methods, or to perform fast charging even if it puts a load on the battery.

[0128] Furthermore, the portable X-ray CT scanner 1 detects the connection status between the portable X-ray CT scanner 1 and the external power supply, and if the portable X-ray CT scanner 1 and the external power supply are not connected, it issues a notification prompting the user to connect the portable X-ray CT scanner 1 and the external power supply.

[0129] This allows the system to alert the user if, for example, only the battery is connected to the portable X-ray CT scanner 1, the user forgets to connect the portable X-ray CT scanner 1 to an external power supply, or if the portable X-ray CT scanner 1 and the external power supply are not properly connected due to the power plug not being inserted correctly.

[0130] The embodiments described above can also be modified and implemented as appropriate by changing some of the configurations or functions of each device. Therefore, several modifications of the embodiments described above will be described below as other embodiments. In the following, we will mainly describe the differences from the embodiments described above, and will omit detailed explanations of points that are common with what has already been described. Furthermore, the modifications described below may be implemented individually or in combination as appropriate.

[0131] (Variation 1) In the embodiments described above, the medical imaging diagnostic device was described as a portable X-ray CT scanner, but it is not limited to this. The medical imaging diagnostic device may be, for example, an MRI (Magnetic Resonance Imaging) device, a general X-ray imaging device, or the like.

[0132] (Modification 2) In the above-described embodiment, the portable X-ray CT apparatus 1 and the battery box 201 were connected by a power cable 202. However, the portable X-ray CT apparatus 1 and the battery box 201 may be directly connected.

[0133] Figure 4 shows an example of the configuration of the battery unit 20 according to Modification 2. The battery unit 20 according to Modification 2 is equipped with a connection terminal 204. The connection terminal 204 is a terminal for electrically connecting the battery box 201 and the portable X-ray CT device 1 without a power cable. By connecting the connection terminal 204 to the terminal connection part 104 of the portable X-ray CT device 1, the battery box 201 and the portable X-ray CT device 1 are directly connected.

[0134] Furthermore, the terminal connection section 104 can be considered an example of a connection section, as it allows for the detachable connection of the battery box 201.

[0135] By directly connecting the portable X-ray CT scanner 1 and the battery box 201, the battery box 201 can transmit power to the portable X-ray CT scanner 1 without any loss.

[0136] The portable X-ray CT device 1 and the battery box 201 may also be configured to be connected via both the power cable 202 and the connection terminal 204. In this case, the second detection function 456 detects whether the portable X-ray CT device 1 and the battery box 201 are connected via the power cable 202 or directly via the connection terminal 204.

[0137] Furthermore, if it is detected that the portable X-ray CT scanner 1 and the battery box 201 are connected by the power cable 202, the display control function 460 may, before the imaging protocol is executed, perform control to display a message on the display 42 prompting the user to directly connect the portable X-ray CT scanner 1 and the battery box 201 to prevent power loss.

[0138] (Variation 3) In the above-described embodiment, a configuration was explained in which the battery status is detected after the selection of the shooting protocol. However, the battery status may be detected first, and shooting protocols that can be executed with the current battery status may be presented.

[0139] First, the configuration of the portable X-ray CT scanner 1 according to Modification 3 will be described. Figure 5 is a block diagram showing an example of the configuration of the portable X-ray CT scanner 1 according to Modification 3. The processing circuit 45 of the portable X-ray CT scanner 1 according to Modification 3 is equipped with a presentation function 462. In addition, in this modification, the second detection function 456 detects the battery connection status and battery capacity before the imaging protocol is selected.

[0140] The presentation function 462 presents executable shooting protocols. For example, if a battery disconnection is detected, the presentation function 462 presents shooting protocols that do not require a battery connection.

[0141] In this case, for example, the display control function 460 generates a shooting protocol selection screen that distinguishes between a shooting protocol that does not require a battery connection (an example of a first shooting protocol) and a shooting protocol that requires a battery connection (an example of a second shooting protocol). Next, the display control function 460 controls the display of the shooting protocol selection screen on the display 42.

[0142] When generating the selection screen for the shooting protocol described above, the display control function 460 functions as an example of a screen generation unit. Furthermore, since the display control function 460 outputs the generated display screen for display, it also functions as an example of an output unit.

[0143] There are no particular restrictions on how to distinguish between shooting protocols that do not require a battery connection and those that do. For example, the display control function 460 may gray out shooting protocols that require a battery connection or highlight shooting protocols that do not require a battery connection.

[0144] Furthermore, the display control function 460 may also perform control to display, even when the battery is connected, the system in a way that distinguishes between shooting protocols that do not require a battery connection and those that do require a battery connection.

[0145] In this case, the display control function 460 controls the display so that shooting protocols that do not require a battery connection and those that do require a battery connection can be distinguished, for example, by graying out shooting protocols that require a battery connection when the battery is not connected, and displaying shooting protocols that require a battery connection in a different color from shooting protocols that do not require a battery connection when the battery is connected.

[0146] Furthermore, for example, if the battery connection status is detected, the suggestion function 462 will suggest the shooting protocols that can be executed with the current battery capacity.

[0147] Furthermore, if a user attempts to select a shooting protocol that is not presented by the presentation function 462 (an unexecutable shooting protocol), the system control function 451 may control the selection function 457 so that it cannot select that shooting protocol.

[0148] Furthermore, if a user attempts to select a shooting protocol that cannot be executed without a battery connected, the presentation function 462 may cooperate with the display control function 460 to display a pop-up message on the display 42 indicating that the shooting protocol being selected cannot be executed with the current battery status.

[0149] Furthermore, if an inspection order has been received in advance from RIS or the like, and the imaging protocol corresponding to the inspection order cannot be executed without a battery connected, and the second detection function 456 detects that the battery is not connected, the presentation function 462 may cooperate with the display control function 460 to display a warning message on the display 42 indicating that imaging cannot be performed without connecting the battery.

[0150] Furthermore, if, after a shooting protocol has been selected by the selection function 457, the presentation function 462 may present a shooting protocol that can be executed with the current battery state, if the selected shooting protocol cannot be executed with the current battery state.

[0151] Next, the processes performed by the portable X-ray CT apparatus 1 according to Modification 3 will be described. Figure 6 is a flowchart showing an example of the processes performed by the portable X-ray CT apparatus 1 according to Modification 3. Steps S21 to S24 are the same processes as steps S1 to S4 in Figure 3, so their explanation will be omitted.

[0152] After confirming the connection between the portable X-ray CT device 1 and the external power supply, the second detection function 456 detects the connection status between the portable X-ray CT device 1 and the battery (step S25). If it is detected that the portable X-ray CT device 1 is not connected to the battery (step S25: No), the process proceeds to step S27.

[0153] On the other hand, if it is detected that the portable X-ray CT scanner 1 is connected to a battery (step S25: Yes), the second detection function 456 detects the battery capacity (step S26). Next, the presentation function 462 presents the imaging protocols that can be executed with the current battery state (step S27). Specifically, the presentation function 462 works in cooperation with the display control function 460 to control the display 42 so that executable imaging protocols and executable imaging protocols can be identified.

[0154] Next, the selection function 457 selects a shooting protocol. Then, the system control function 451 checks whether an executable shooting protocol has been selected with the current battery state (step S28). If an executable shooting protocol has been selected (step S28: Yes), the process proceeds to step S33.

[0155] On the other hand, if an unexecutable imaging protocol is selected (step S28: No), the process proceeds to step S29. The processes in steps S29 to S33 are the same as those in steps S12 to S16 in Figure 3, so their explanation is omitted.

[0156] According to this modified version, the imaging protocols that can be executed with the current battery state are presented. For example, even if the user's initially desired imaging protocol is not executable, if there is an executable imaging protocol that can achieve the purpose of imaging, the user can immediately perform imaging of the subject.

[0157] (Modification 4) In the above-described embodiment, a configuration was explained in which, if the system is not connected to an external power source, imaging of the subject P cannot be performed until an external power source is connected. However, a configuration in which imaging of the subject P can be performed by simply connecting the battery is also possible.

[0158] First, the configuration of the portable X-ray CT apparatus 1 according to Modification 4 will be described. The configuration of the portable X-ray CT apparatus 1 according to Modification 4 is the same as that of the portable X-ray CT apparatus 1 according to Modification 3 shown in Figure 5, but the processing of the display control function 460 and the presentation function 462 differs from that of Modification 3.

[0159] In this modified example, if the portable X-ray CT scanner 1 is not connected to an external power supply, and only a battery is connected to the portable X-ray CT scanner 1, the presentation function 462 presents the imaging protocols that can be performed with the current battery capacity.

[0160] Furthermore, if, for example, a shooting protocol that cannot be executed with the current battery capacity is selected, the display control function 460 controls the display 42 to display a message prompting the user to connect to an external power source or replace the battery.

[0161] Next, the processes performed by the portable X-ray CT apparatus 1 according to Modification 4 will be described. Figure 7 is a flowchart showing an example of the processes performed by the portable X-ray CT apparatus 1 according to Modification 4. Steps S41 to S46 are substantially the same as steps S21 to S26 in Figure 6, so their explanation will be omitted.

[0162] However, in this modified example, if it is detected in step S44 that the portable X-ray CT device 1 and the external power supply are not connected (step S44: No), the process in step S44 is not repeated, but the process proceeds to step S46.

[0163] In this case, the reason the battery connection status is not detected is that, if the portable X-ray CT device 1 is not connected to an external power source, the gantry cannot be turned on unless the battery is connected, so it is clear that the portable X-ray CT device 1 is connected to the battery.

[0164] After step S45 detects that the portable X-ray CT scanner 1 is not connected to the battery, or after step S46 detects the battery capacity, the presentation function 462 presents the imaging protocols that can be executed given the current connection status with the external power supply and the current battery status (step S47). The processing in step S48 is the same as in step S28 in Figure 6, so the explanation is omitted.

[0165] If an executable imaging protocol is selected in step S48 (step S48: Yes), the process proceeds to step S55. On the other hand, if an executable imaging protocol is selected in step S48 (step S48: No), the second detection function 456 again detects the connection status between the portable X-ray CT device 1 and the external power supply (step S49).

[0166] If it is detected that the portable X-ray CT scanner 1 is not connected to an external power supply (step S49: No), the display control function 460 controls the display 42 to display a message prompting the user to connect to an external power supply or replace the battery with another one (step S51). Then, the process proceeds to step S44. On the other hand, if it is detected that the portable X-ray CT scanner 1 is connected to an external power supply (step S49: Yes), the process proceeds to step S50.

[0167] The processes in steps S50 and S52 to S55 are the same as those in steps S29 to S33 in Figure 6, so their explanation is omitted.

[0168] According to this modified version, it is possible to photograph the subject using only the battery, making it possible to photograph subject P even in emergency situations such as power outages.

[0169] (Variation 5) In the above-described embodiment, the configuration in which the external power supply is a commercial power supply was explained. However, the portable X-ray CT apparatus 1 may be configured to be connectable to both a dedicated power supply capable of high-power imaging and a commercial power supply.

[0170] First, the configuration of the portable X-ray CT apparatus 1 according to Modification 5 will be described. In this modification, the portable X-ray CT apparatus 1 is equipped with both a power cable and a power plug (not shown) for connecting to a dedicated power supply and a power cable and a power plug (not shown) for connecting to a commercial power supply.

[0171] Furthermore, in this modified example, the first detection function 455 detects whether the portable X-ray CT device 1 is connected to a dedicated power supply or a commercial power supply when the portable X-ray CT device 1 is connected to an external power supply. For example, the first detection function 455 detects whether the device is connected to a dedicated power supply or a commercial power supply after the required power amount has been estimated for the imaging protocol selected by the selection function 457.

[0172] In this case, if the first detection function 455 detects that the device is connected to a dedicated power supply, the battery connection is unnecessary, and the system control function 451 can immediately execute the selected shooting protocol.

[0173] Furthermore, if the first detection function 455 detects that the portable X-ray CT scanner 1 is connected to a commercial power supply and an ineffective imaging protocol is selected, the display control function 460 may, if possible, control the display 42 to display a message prompting the user to connect the portable X-ray CT scanner 1 to a dedicated power supply.

[0174] Next, the processes performed by the portable X-ray CT apparatus 1 according to Modification 5 will be described. Figure 8 is a flowchart showing an example of the processes performed by the portable X-ray CT apparatus 1 according to Modification 5. Steps S61 to S66 are the same processes as steps S1 to S6 in Figure 3, so their explanation will be omitted.

[0175] After estimating the required power, the first detection function 455 detects whether the portable X-ray CT device 1 is connected to a dedicated power supply (step S67). If it is connected to a dedicated power supply (step S67: Yes), the process proceeds to step S77. On the other hand, if it is not connected to a dedicated power supply (step S67: No), the process proceeds to step S68.

[0176] Steps S68 to S77 are the same processes as steps S7 to S16 in Figure 3, so their explanation is omitted.

[0177] According to this modified version, since it can be connected to a dedicated power supply capable of high-power imaging, for example, when imaging of subject P is performed in a location with dedicated power supply equipment, the battery unit 20 becomes unnecessary. In this case, since there is no need to move the battery unit 20 along with the device, the portability of the portable X-ray CT scanner 1 is improved.

[0178] (Experimental variation 6) In the embodiments described above, a method was described in which the required power consumption is estimated based on the imaging protocol to be used, before the imaging protocol is executed. However, the estimation of required power consumption is not limited to before the imaging protocol is executed. For example, the required power consumption of the imaging protocol to be used may be estimated after scan imaging to determine the imaging range.

[0179] For example, depending on the results of a scan, the shooting parameters, such as the shooting range, included in the shooting protocol may be adjusted. In this case, depending on the conditions of the adjusted shooting parameters, the required power may exceed the initially estimated amount, and if shooting is performed using the adjusted shooting protocol, a power shortage may occur.

[0180] Therefore, for example, the estimation function 458 may be configured to estimate the required power based on the adjusted shooting protocol, provided that the shooting parameters have been adjusted after the scan imaging. Note that the scan imaging may be included in the shooting protocol, or it may be performed prior to the execution of the shooting protocol. In the former case, the estimation function 458 may be configured to estimate the required power based on the shooting protocol before the execution of the shooting protocol, and then estimate the required power again after the scan imaging included in the shooting protocol, provided that the shooting parameters have been adjusted.

[0181] The following describes an example where scan imaging is included at the beginning of the imaging protocol.

[0182] For example, in this modified example, if the imaging protocol selected by the selection function 457 includes scan imaging, the system control function 451 automatically adjusts the imaging parameters related to the imaging protocol based on the imaging results of the scan imaging after the scan imaging is performed. As an example, the system control function 451 adjusts the imaging range to match the body shape of the subject P being imaged, based on the imaging results of the scan imaging.

[0183] The system control function 451 may adjust the shooting parameters according to the user's instructions. Alternatively, the system control function 451 may accept instructions from the user to further adjust the shooting parameters after automatically adjusting them. In this case, the system control function 451 will perform control to further adjust the shooting parameters after the automatic adjustment, according to the user's instructions.

[0184] The estimation function 458 in this modified version estimates the power consumption required for the imaging protocol based on the adjusted imaging parameters. Specifically, the estimation function 458 estimates the power consumption by calculating the average power consumption based on the adjusted conditions, by multiplying the tube voltage and tube current by the continuous scan time.

[0185] Furthermore, the determination function 459 in this modified version determines whether the shooting protocol can be executed each time the estimation function 458 estimates the required power. In addition, if the shooting parameters are adjusted by the system control function 451, the determination function 459 may compare the required power estimated before the adjustment of the shooting parameters (before the start of the shooting protocol) with the required power estimated after the adjustment of the shooting parameters, and determine whether the required power has increased after the adjustment of the shooting parameters. In this case, the determination function 459 only needs to determine whether the shooting protocol with the adjusted shooting parameters can be executed if the required power has increased.

[0186] In this modified example, the determination function 459 determines whether the shooting protocol can be executed without a battery connection by setting a threshold for the estimated required power. For example, the determination function 459 determines that it can be executed without a battery connection if the estimated required power is less than the threshold, and determines that it cannot be executed without a battery connection if the estimated required power is equal to or greater than the threshold.

[0187] Furthermore, the judgment function 459 determines whether the battery capacity is insufficient based on the battery capacity required to execute the shooting protocol, which is determined according to the estimated required power.

[0188] Next, the processing performed by the portable X-ray CT apparatus 1 according to this modified example will be described. Figure 9 is a flowchart showing an example of the processing performed by the portable X-ray CT apparatus 1 according to Modified Example 6. As a prerequisite, a scanning protocol including scan imaging is selected by the selection function 457, and one of the following processes is performed: steps S1 to S15 in Figure 3, steps S21 to S32 in Figure 6, steps S41 to S50 in Figure 7, or steps S61 to S76 in Figure 8 (provided that the portable X-ray CT apparatus 1 is not connected to a dedicated power supply).

[0189] First, the system control function 451 controls each part of the portable X-ray CT scanner 1 and performs scan imaging (step S81). Next, the system control function 451 performs control to adjust the imaging parameters predetermined in the imaging protocol (step S82). Specifically, the system control function 451 adjusts the imaging parameters according to the body shape of the subject P to be scanned, based on the imaging results of the scan imaging.

[0190] Next, the estimation function 458 estimates the required power consumption for the imaging protocol whose imaging parameters have been adjusted by the system control function 451 (step S83). Specifically, the estimation function 458 estimates the required power consumption by calculating the average power consumption based on the adjusted conditions, by multiplying the tube voltage and tube current by the continuous scan time.

[0191] Next, the determination function 459 compares the estimated power consumption before adjusting the imaging parameters with the estimated power consumption after adjustment, and determines whether the power consumption has increased after adjusting the imaging parameters (step S84). If the power consumption has not increased (step S84: No), the system control function 451 controls each part of the portable X-ray CT scanner 1 and performs the imaging process after scan imaging as defined in the imaging protocol, and terminates this process (step S94).

[0192] On the other hand, if the required power is increasing (step S84: Yes), the process proceeds to step S85. Steps S85 to S93 are the same as steps S10 to S15 in Figure 3, so their explanation is omitted. After the processing in steps S85 to S93, the process proceeds to step S94, and this process ends.

[0193] In Figure 9, scan imaging is performed after determining whether the selected imaging protocol by the selection function 457 is executable. However, the timing of scan imaging is not limited to this. For example, scan imaging may be performed after selecting the imaging protocol by the selection function 457. In this case, the estimation function 458 only needs to estimate the required power for the imaging protocol after the imaging parameters have been adjusted.

[0194] According to this modified version, after scanning, the required power is estimated for the scanning protocol with adjusted scanning parameters, and it is determined whether the scanning protocol is executable. Therefore, even if the required power increases after adjusting the scanning parameters, it is possible to prevent the portable X-ray CT device 1 from stopping mid-scan.

[0195] According to at least the embodiments and modifications described above, it is possible to provide a portable medical imaging device capable of high-power imaging.

[0196] While several embodiments have been described, these embodiments are presented as examples only and are not intended to limit the scope of the invention. These embodiments can be implemented in a variety of other forms, and various omissions, substitutions, modifications, and combinations of embodiments are possible without departing from the spirit of the invention. These embodiments and their variations are included in the scope and spirit of the invention, as well as in the claims and their equivalents. [Explanation of symbols]

[0197] 1. Portable X-ray CT scanner 10. Mounting device 101 Support stand 102 Casters 103 Cable connection section 104 Terminal connection section 11 X-ray tube 12 X-ray detectors 13 rotation frames 14 X-ray high-voltage equipment 15 Control device 16 Wedge 17 Collimator 18 DAS(Data Acquisition System) 19 Photography 20 Battery Units 201 Battery Box 202 Power Cable 203 Caster 204 Connection terminals 30 Bed equipment 31 base 32 Bed drive mechanism 33 Top plate 34 Support Frame 40 Console device 41 memory 42 displays 43 Input Interfaces 45 Processing Circuit 451 System control function 452 Pre-processing function 453 Reconstruction Processing Function 454 Image Processing Functions 455 First detection function 456 Second detection function 457 Selection function 458 Estimation Function 459 Judgment function 460 Display control function 461 Battery control function 462 Presentation function

Claims

1. A portable medical imaging diagnostic device, A connector that allows for the detachable connection of a portable battery, A detection unit for detecting the connection status of the battery to the connection part, A determination unit that determines whether or not it is possible to photograph a subject based on the shooting conditions related to the photographing of the subject and the connection status detected by the detection unit, the determination unit that determines whether or not it is possible to execute the shooting protocol based on the shooting conditions included in the shooting protocol which defines the procedure for photographing a subject and acquiring an image, If the aforementioned shooting protocol is not executable and the storage battery is not connected to the connection part, the control unit provides a notification prompting the user to connect the storage battery. A medical imaging diagnostic device equipped with [a specific feature].

2. The system further includes an estimation unit that estimates the amount of power required to execute the aforementioned shooting protocol, The determination unit determines whether the shooting protocol can be executed based on the required power amount and the connection status of the storage battery. The medical imaging diagnostic apparatus according to claim 1.

3. The system further includes a selection unit that selects the target imaging protocol from among a plurality of imaging protocols, The determination unit determines whether or not the shooting protocol selected by the selection unit can be executed. The medical imaging diagnostic apparatus according to claim 2.

4. The medical imaging diagnostic apparatus according to claim 2 or 3, further comprising a control unit that suppresses the execution of the imaging protocol determined to be unexecutable by the determination unit.

5. A selection unit that selects the target shooting protocol from among multiple shooting protocols, A control unit that controls the selection unit so that it cannot select a shooting protocol among the multiple shooting protocols that the determination unit has determined to be unexecutable, The medical imaging diagnostic apparatus according to claim 2, further comprising the above.

6. The medical imaging diagnostic apparatus according to any one of claims 2 to 5, further comprising a control unit that performs control to present an executable imaging protocol in the current state if the aforementioned imaging protocol is not executable.

7. The aforementioned battery can be charged using an external power source. The detection unit detects the capacity of the battery when the battery is connected to the connection unit. The determination unit determines whether the shooting protocol can be executed based on the shooting conditions and the capacity of the storage battery. The medical imaging diagnostic apparatus according to any one of claims 2 to 6, further comprising a control unit that performs control to display on a display device the charging time until the imaging protocol can be executed if it is determined that the imaging protocol cannot be executed.

8. A screen generation unit generates a display screen that displays, in an identifiable manner, a first shooting protocol that the determination unit has determined to be executable and a second shooting protocol that the determination unit has determined to be unexecutable, among a plurality of shooting protocols. An output unit that outputs the aforementioned display screen for display, A medical imaging diagnostic apparatus according to claim 2, comprising the above.

9. A medical imaging diagnostic apparatus according to any one of claims 1 to 8, X-ray CT device.

10. An information processing method that is performed on one or more computers, A detection step for detecting the connection status of a portable rechargeable battery, which is detachable from a portable medical imaging device, to the said medical imaging device, A determination step for determining whether or not imaging of a subject is possible based on imaging conditions relating to imaging of the subject and the connection status of the storage battery to the medical imaging diagnostic device, the determination step for determining whether or not the imaging protocol is executable based on the imaging conditions included in the imaging protocol which defines the procedure for imaging the subject and acquiring an image, If the aforementioned shooting protocol is not executable and the battery is not connected, a control step is made to provide a notification prompting the user to connect the battery. Information processing methods including

Images