Medical image diagnostic system, and operation method and program of medical image diagnostic system

Abstract

To provide a medical image diagnostic system capable of reducing a burden on an operator, etc. of checking items to be checked involved in imaging by a medical image capturing device, improving operability, and avoiding a danger, and to provide an operation method and a program of the medical image diagnostic system.SOLUTION: A medical image diagnostic system includes: a sensor for detecting the two ends of a cable-like member attached to a subject when capturing a medical image of the subject using a medical image capturing device in the state that the cable-like member connected to medical equipment is attached to the subject; and a processor for acquiring information from the sensor, calculating a safe movable range of a bed on the basis of the whole length, a distance between the two ends and positions of the two ends of the cable-like member, and a moving direction of the bed on which the subject is placed, and permitting imaging when the moving amount of the bed based on imaging conditions are within the safe movable range.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present disclosure relates to a medical image diagnostic system, and an operating method and program for the medical image diagnostic system. [Background technology]

[0002] Patent document 1 describes an image processing device that includes an acquisition unit that acquires images obtained by photographing a subject placed on the top plate of a magnetic resonance imaging (MRI) device with a camera, a first detection unit that detects from the image loops in which induced currents may occur due to the magnetic field generated by the MRI device, and an output unit that outputs the detection results by the first detection unit. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2022-124633 A Summary of the Invention [Problem to be solved by the invention]

[0004] In an examination using a medical imaging device such as an X-ray CT (Computed Tomography) device or an MRI device, a subject is placed on a tabletop placed on top of a bed, and the tabletop is moved into the imaging space of a gantry to image the subject. When performing such a medical imaging examination, other medical devices such as an electrocardiograph or a contrast agent injection device (injector) may be used in combination. A cable-like member (hereinafter referred to as a cable-like member) connected to the medical device, such as a cable connected to the electrocardiograph or a tube connected to the injector, is attached to the subject on the bed, and the bed moves into the imaging space of the gantry with the subject and the medical device connected by the cable-like member.

[0005] When moving the bed on which the subject is placed, the operator or assistant must check the state of the cable-like member attached to the subject before starting imaging to prevent the cable-like member from getting tangled or pulled. Patent Document 1 describes a technology for detecting cable loops, which is a problem specific to MRI devices, but does not consider problems such as tangling or pulling that may occur due to the movement of the bed.

[0006] The present disclosure has been made in consideration of the above circumstances, and aims to provide a medical image diagnostic system, an operating method and a program for a medical image diagnostic system, which reduces the burden on an operator to check items related to imaging using a medical image imaging device, thereby improving operability and enabling risk avoidance. [Means for solving the problem]

[0007] A medical image diagnostic system according to a first aspect of the present disclosure includes, when a medical image of a subject is captured using a medical imaging device with a cable-like member connected to a medical device attached to the subject, a sensor that detects both ends of the cable-like member attached to the subject, and a processor that acquires information from the sensor and calculates a safe range of movement of the bed carrying the subject based on the total length of the cable-like member, the distance between the two ends, the positions of the two ends, and the direction of movement of the bed, and allows imaging when the amount of movement of the bed based on the imaging conditions is within the safe range of movement.

[0008] According to the first aspect, by detecting both ends of the cable-like member using a sensor, the state of the cable-like member attached to the subject is grasped before imaging begins, and the processor checks the relationship between the safe movement range of the bed and the amount of movement of the bed based on the imaging conditions. Then, imaging is permitted if the amount of movement is within the safe movement range. This reduces the burden on the operator, etc., of checking before imaging, improving operability and making it possible to avoid danger. Furthermore, according to the first aspect, it is possible to reduce the need to redo the scanogram, and thus to reduce unnecessary exposure.

[0009] In the medical image diagnostic system of the second aspect, in the first aspect, the processor may be configured to notify the user before starting imaging that the amount of movement of the bed based on the imaging conditions will exceed the safe range of movement.

[0010] In the medical image diagnostic system of the third aspect, in the first or second aspect, the processor may be configured to present the safe movement range before starting imaging when the amount of movement of the bed based on the imaging conditions exceeds the safe movement range.

[0011] A medical image diagnostic system according to a fourth aspect, in any one of the first to third aspects, may be configured such that, when the amount of movement of the bed based on the shooting conditions exceeds a safe movement range, the processor calculates a required equipment movement distance indicating the installation position of the medical equipment that enables shooting under the shooting conditions to be performed, and presents the required equipment movement distance before shooting begins.

[0012] A medical image diagnostic system according to a fifth aspect may be configured such that, in the fourth aspect, when the amount of movement of the bed based on the shooting conditions is less than twice the total length of the cable-like member, the processor calculates the required distance of movement of the medical device by subtracting the limit distance of movement of the safe moving range from the amount of movement of the bed based on the shooting conditions.

[0013] A medical image diagnostic system according to a sixth aspect may be configured in any one of the first to fifth aspects, wherein the medical device includes at least one of an electrocardiograph, a vital sign monitor, and a contrast agent injection device.

[0014] A medical image diagnostic system according to a seventh aspect may be configured in any one of the first to sixth aspects, wherein the cable-like member includes at least one of a cable and a tube connecting a medical device and a subject.

[0015] A medical image diagnostic system according to an eighth aspect may be configured in any one of the first to seventh aspects such that the bed includes a top plate on which the subject is placed and moved, and a drive mechanism for moving the top plate into the imaging space of the medical imaging device.

[0016] A medical image diagnostic system according to a ninth aspect may be configured in any one of the first to eighth aspects, such that the medical image capturing apparatus includes a gantry and a bed.

[0017] A medical image diagnostic system according to a tenth aspect, in any one of the first to ninth aspects, may be a distance measuring sensor including a first end sensor arranged at an end of the cable-shaped member on the medical device side, and a second end sensor arranged at an end of the cable-shaped member on the subject side.

[0018] A medical image diagnostic system according to an eleventh aspect may be configured in any one of the first to ninth aspects such that the sensor includes a camera, and information on the positions of both ends of the cable-like member and the distance between the two ends can be obtained by analyzing an image captured by the camera.

[0019] A medical image diagnostic system according to a twelfth aspect may be configured in any one of the first to eleventh aspects such that a total length of the cable-like member is measured based on information obtained from the sensor.

[0020] A medical image diagnostic system according to a thirteenth aspect may be configured in the twelfth aspect such that the measurement of the overall length of the cable-like member is performed before the cable-like member is attached to a subject.

[0021] A medical image diagnostic system according to a fourteenth aspect may be configured in any one of the first to thirteenth aspects such that, if both ends of the cable-like member are not detected by the sensor, the processor issues an alert.

[0022] A medical image diagnostic system according to a 15th aspect, in any one of the first to fourteenth aspects, may be configured such that when both ends of the cable-like member detected using the sensor are on the same straight line parallel to the movement direction of the bed, the processor calculates the safe movement range by subtracting the distance between the both ends from the total length of the cable-like member when the movement direction of the bed is from the end of the cable-like member on the medical device side to the end on the subject side, and calculates the safe movement range by adding the distance between the both ends to the total length of the cable-like member when the movement direction of the bed is from the end of the cable-like member on the subject side to the end on the medical device side.

[0023] A medical image diagnostic system according to a 16th aspect, in any one of the 1st to 14th aspects, may be configured such that, when both ends of the cable-like member detected using the sensor are not on the same straight line parallel to the direction of movement of the bed, the processor uses a converted distance obtained by converting the distance between the both ends into a distance on the same straight line, and calculates the safe movement range by subtracting the converted distance from the overall length of the cable-like member when the direction of movement of the bed is from the end of the cable-like member on the medical device side to the end on the subject side, and calculates the safe movement range by adding the converted distance to the overall length of the cable-like member when the direction of movement of the bed is from the end of the cable-like member on the subject side to the end on the medical device side.

[0024] A method of operating a medical image diagnostic system according to a seventeenth aspect includes, when a medical image of a subject is captured using a medical imaging device with a cable-like member connected to a medical device attached to the subject, detecting both ends of the cable-like member attached to the subject using a sensor, and a processor acquiring information from the sensor and calculating a safe range of movement of the bed carrying the subject based on the total length of the cable-like member, the distance between the two ends, the positions of the two ends, and the direction of movement of the bed, and allowing imaging if the amount of movement of the bed based on the imaging conditions is within the safe range of movement.

[0025] The method for operating the medical image diagnostic system according to the seventeenth aspect may have a configuration including the same specific aspects as the medical image diagnostic system according to any one of the second to sixteenth aspects.

[0026] The program of the 18th aspect enables a computer to implement the following functions when a medical image is captured of a subject using a medical imaging device with a cable-like member connected to a medical device attached to the subject: acquiring information from a sensor that detects both ends of the cable-like member attached to the subject; calculating a safe range of movement of the bed carrying the subject based on the total length of the cable-like member, the distance between the two ends, the positions of the two ends, and the direction of movement of the bed; and allowing imaging if the amount of movement of the bed based on the imaging conditions is within the safe range of movement.

[0027] The program according to the eighteenth aspect may have a configuration including the same specific aspect as the medical image diagnostic system according to any one of the second to sixteenth aspects.

[0028] The present disclosure also includes a tangible, non-transitory, computer-readable recording medium, such as an optical disk, on which the program according to the eighteenth aspect is stored. Effect of the Invention

[0029] According to the present disclosure, it is possible to reduce the burden of confirmation work on an operator etc. regarding imaging using a medical image imaging device, thereby improving operability and avoiding danger. [Brief description of the drawings]

[0030] [Figure 1] FIG. 1 is a perspective view illustrating an example of a medical image diagnostic system according to an embodiment of the present disclosure. [Diagram 2] FIG. 2 is an explanatory diagram illustrating a schematic configuration of a medical image diagnostic system. [Diagram 3] FIG. 3 is an explanatory diagram that illustrates an example of a method for monitoring the state of a cable attached to a subject. [Figure 4]FIG. 4 is a block diagram showing an example of the hardware configuration of the console. [Diagram 5] FIG. 5 is a flowchart showing a first example of a method for operating a medical image diagnostic system. [Figure 6] FIG. 6 is a flowchart showing an example of the calibration process applied to step S11 in FIG. [Figure 7] FIG. 7 is a flowchart showing an example of the calculation process of the bed safe movement range applied to step S20 of FIG. [Figure 8] FIG. 8 is a schematic plan view illustrating an example of the positional relationship between the fixed end sensor and the moving end sensor. [Figure 9] FIG. 9 is a block diagram showing a functional configuration of the information processing device. [Figure 10] FIG. 10 is a flowchart showing a second example of the operating method of the medical image diagnostic system. [Figure 11] FIG. 11 is a flowchart showing an example of the process of calculating and presenting the optimum device position which is applied in step S23 of FIG. [Figure 12] FIG. 12 is a block diagram showing a functional configuration of an information processing device according to a modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0031] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description and the accompanying drawings, the same components are designated by the same reference numerals, and duplicated explanations will be omitted.

[0032] First Embodiment [System configuration example] 1 is a perspective view showing an example of a medical image diagnostic system 1 according to a first embodiment of the present disclosure. Here, an example will be described in which an X-ray CT device is used as a medical imaging device 10, but the technology of the present disclosure is also applicable to modalities such as an MRI device and a Positron Emission Tomography (PET) device.

[0033] The medical imaging device 10 includes a gantry 12, a bed 14, and a console 16. The gantry 12 is a device that irradiates an examinee with X-rays and detects the X-rays that have passed through the examinee. The gantry 12 is also called a scanner gantry. The bed 14 includes a top plate 15 on which the examinee undergoing an examination is placed, a vertical drive device that raises and lowers the height of the top plate 15, and a top plate drive device that moves the top plate 15 in a direction to enter the imaging space 13 of the gantry 12 and in a direction to exit the imaging space 13. The examinee is placed on the top plate 15 in a supine position. The top plate drive device can move the top plate 15 back and forth in the subject's body axis direction, and in a direction perpendicular to the body axis and parallel to the floor surface (left and right direction).

[0034] 1 is defined as the Y-axis direction. The body axis direction of the subject on the bed 14 is defined as the Z-axis direction, and the direction perpendicular to the Y-axis and Z-axis directions is defined as the X-axis direction. The subject can enter or exit the imaging space 13 of the gantry 12 by moving the top board 15 on which the subject is placed in the Z-axis direction.

[0035] The console 16 is a device that controls each part of the gantry 12 and the bed 14, acquires transmission X-ray data measured by the gantry 12, and generates and displays images. The console 16 includes an information processing device 20, an input device 22, and a display device 24. The information processing device 20 functions as a system control device and an image processing device. The gantry 12 and the bed 14 may be installed in an examination room, and the console 16 may be installed in an operation room.

[0036] The medical imaging apparatus 10 can be used in combination with other medical devices such as an electrocardiograph 30 and an injector. In this embodiment, an example in which an electrocardiograph 30 is used as an example of a medical device to be used in combination with the medical imaging apparatus 10 will be described.

[0037] A cable 32 that is attached to the subject is connected to the electrocardiograph 30. The cable 32 may be, for example, a lead cord branched into a plurality of leads, or a combination of a lead cord and a relay cable. The tip of each lead may be a tip terminal, a clip (snap) terminal, or an adhesive electrode. A connector portion provided at the base end of the cable 32 on the electrocardiograph 30 side is connected to an electrocardiogram input connector portion of the electrocardiograph 30. An end of the cable 32 on the subject side is connected to the subject.

[0038] 2 is an explanatory diagram showing a schematic configuration of the medical image diagnostic system 1. The gantry 12 includes an X-ray source 101, a rotating disk 102, a collimator 103, an X-ray detector 106, a data collection device 107, a gantry control device 108, a bed control device 109, and an X-ray control device 110. The information processing device 20 of the console 16 includes an image processing device 122, a storage device 123, and a system control device 124.

[0039] An opening 104 is provided in the rotating plate 102 of the gantry 12, and an X-ray source 101 and an X-ray detector 106 are disposed facing each other through the opening 104. The opening 104 can serve as an imaging space 13. A bed control device 109 moves a top plate 15 of a bed 14 at a bed movement speed and in a movement direction determined by a system control device 124.

[0040] In this specification, moving the top 15 of the bed 14 may be described as "moving the bed 14." In other words, the description of moving the bed 14 includes the concept of moving the top 15, and the descriptions of the bed movement speed and bed movement direction, etc. include the concepts of the top movement speed and top movement direction.

[0041] The rotating disk 102 rotates around the subject by a driving force transmitted from a rotating disk drive device through a drive transmission system. The rotating disk drive device is controlled by a gantry control device 108.

[0042] The X-ray source 101 is controlled by the X-ray controller 110 to continuously or intermittently irradiate X-rays of a predetermined intensity. The X-ray controller 110 controls the X-ray tube voltage and X-ray tube current applied or supplied to the X-ray source 101 in accordance with the X-ray tube voltage and X-ray tube current determined by the system controller 124 of the console 16.

[0043] A collimator 103 is provided at the X-ray irradiation port of the X-ray source 101. The collimator 103 limits the irradiation range of the X-rays emitted from the X-ray source 101. For example, it shapes the X-rays into a cone beam (cone-shaped or pyramid-shaped beam) or the like. The opening width of the collimator 103 is controlled by a system control device 124.

[0044] X-rays emitted from the X-ray source 101, passing through the collimator 103, and penetrating the subject are incident on the X-ray detector 106.

[0045] The X-ray detector 106 is an array of, for example, about 1000 X-ray detection elements, each of which is formed by combining a scintillator and a photodiode, in the channel direction (circulation direction) and, for example, about 1 to 320 X-ray detection elements in the row direction (body axis direction). The X-ray detector 106 is disposed so as to face the X-ray source 101 across the subject. The X-ray detector 106 detects the amount of X-rays irradiated from the X-ray source 101 and transmitted through the subject, and outputs the amount to a data acquisition device 107.

[0046] The data acquisition device 107 acquires the amount of X-rays detected by each X-ray detection element of the X-ray detector 106, converts it into digital data, and sequentially outputs it to the image processing device 122 of the console 16 as transmitted X-ray data.

[0047] The image processing device 122 acquires the transmitted X-ray data input from the data collecting device 107, and performs preprocessing such as logarithmic conversion and sensitivity correction to generate projection data necessary for image reconstruction. The image processing device 122 also reconstructs images such as tomographic images using the generated projection data. The system control device 124 controls the entire medical image diagnostic system 1, stores the image data reconstructed by the image processing device 122 in the storage device 123, and displays it on the display device 24.

[0048] The image processing device 122 and the system control device 124 may be configured using a computer including a processor and a memory. The processor includes a CPU (Central Processing Unit). The processor may include a GPU. The memory includes a RAM (Random Access Memory). The memory may include a ROM (Read Only Memory).

[0049] The storage device 123 is a tangible non-transitory computer-readable medium, and may be, for example, a semiconductor memory, a hard disk drive (HDD), a solid state drive (SSD), or a combination of a plurality of these. The storage device 123 may include an external storage device such as a removable disk. The storage device 123 stores programs, data, and the like that realize various functions of the medical image diagnostic system 1.

[0050] The display device 24 is configured by, for example, a liquid crystal display, an organic electro-luminescence (OEL) display, a projector, or an appropriate combination of these. The display device 24 is connected to the system control device 124. The display device 24 displays the subject image output from the image processing device 122 and various information handled by the system control device 124.

[0051] The input device 22 is configured with, for example, a keyboard, a pointing device such as a mouse, a numeric keypad, various switch buttons, etc. The input device 22 may include a voice input device. The input device 22 may also be a touch panel type input device that is integrated with the display screen of the display device 24.

[0052] The input device 22 outputs various instructions and information input by the operator to the system control device 124. The operator uses the display device 24 and the input device 22 to interactively operate the medical image diagnostic system 1.

[0053] The medical image diagnostic system 1 according to this embodiment includes a sensor 34 as a means for monitoring the state of a cable 32 attached to a subject from an electrocardiograph 30. The sensor 34 is a component of an indoor positioning system. The indoor positioning system may be, for example, a device using a beacon or UWB (Ultra-Wide Band), or a device using various distance measuring sensors. Here, an example using a distance measuring sensor will be described, but it is also possible to use a camera instead of or in combination with the distance measuring sensor.

[0054] The sensor 34 includes a fixed end sensor 35 arranged at the end of the cable 32 on the device side, i.e., the end on the electrocardiograph 30 side, and a moving end sensor 36 arranged at the end of the cable 32 on the subject side. For example, the moving end sensor 36 may include a wave transmitter that emits radio waves, and the fixed end sensor 35 may include a wave receiver that receives radio waves and a data transmitter that transmits distance information (distance measurement data) measured based on the received radio waves to the system control device 124.

[0055] In this embodiment, the sensor 34 is used to monitor the state of the cable 32, and safe bed control is realized. For example, the sensor 34 detects the positions of both ends of the cable 32, and the system control device 124 calculates the safe movement range of the bed 14 taking into account the length of the cable 32. Then, the system control device 124 compares the bed movement amount set in the imaging conditions (imaging plan) with the calculated safe movement range, and if the bed movement amount set in the imaging plan exceeds the safe movement range (reaches outside the safe movement range), it notifies the fact by an alert or the like before imaging starts.

[0056] 3 is an explanatory diagram that shows a schematic example of a method for monitoring the state of the cable 32 attached to the subject PT. As shown in FIG. 3, a fixed end sensor 35 is disposed at the end of the cable 32 connecting the electrocardiograph 30 and the subject PT on the electrocardiograph 30 side, and a moving end sensor 36 is disposed at the end on the subject PT side. The fixed end sensor 35 receives radio waves from the moving end sensor 36 and can grasp the direction and distance of the moving end sensor 36, that is, the position of the moving end sensor 36. The fixed end sensor 35 is an example of a "first end sensor" in the present disclosure, and the moving end sensor 36 is an example of a "second end sensor" in the present disclosure. The cable 32 is an example of a "cable-like member" in the present disclosure.

[0057] The information obtained by the fixed end sensor 35 is sent to the information processing device 20 of the console 16. The method of transmitting information between the fixed end sensor 35 and the information processing device 20 may be wired or wireless. Furthermore, the information of the fixed end sensor 35 may be transmitted to the information processing device 20 via the electrocardiograph 30.

[0058] By providing a step of performing calibration in order to grasp the overall length of the cable 32, it becomes possible to accommodate cases in which cables of different types or lengths are used.

[0059] [Example of distance measuring sensor] Distance measuring sensors can be, for example, LiDAR (Light Detection And Ranging), wireless LAN, radar, etc. LiDAR is a device that measures the distance to an object by emitting laser light and detecting the reflected light or scattered light from the object.

[0060] A wireless LAN distance sensor is a device that measures the distance to an object by emitting radio waves and measuring the waves reflected from the object.

[0061] Radar is a device that measures the distance to an object by emitting radio waves and measuring the waves reflected from the object.

[0062] The wave transmitting section and the wave receiving section of the distance measuring sensor may be integrated or separate, but in the case of using it as the fixed end sensor 35 and the moving end sensor 36, it is preferable that the wave transmitting section and the wave receiving section are separate. The distance measuring sensor is connected to a signal analysis section etc., and the information obtained by the distance measuring sensor is processed in the signal analysis section etc. The connection between the distance measuring sensor and the signal analysis section etc. may be wireless or wired.

[0063] [Console 16 hardware configuration example] 4 is a block diagram showing an example of a hardware configuration of the console 16. The console 16 can be configured using a computer. The computer applied to the console 16 may be a personal computer, a workstation, or a server computer. The processing function of the console 16 may be realized by a computer system including a plurality of computers. The information processing device 20 of the console 16 includes a processor 202, a memory 204 which is a main storage device, a storage 206 which is an auxiliary storage device, an input / output interface 208, and a bus 210.

[0064] The processor 202 includes a central processing unit (CPU). The processor 202 may include a GPU. The processor 202 is connected to a memory 204, a storage 206, an input / output interface, an input device 22, and a display device 24 via a bus 210.

[0065] The processor 202 realizes various functions by executing programs stored in the memory 204. The processor 202 comprehensively controls each unit of the information processing device 20 and various devices arranged in the medical image capturing apparatus 10, and performs various processes.

[0066] The input / output interface 208 includes a communication interface connectable to a network (not shown), a connection interface connectable to an external device, etc. The network may be, for example, a local area network in a medical facility. As a connection interface connectable to an external device, for example, a Universal Serial Bus, a High-Definition Multimedia Interface (HDMI) (HDMI is a registered trademark), etc. can be applied.

[0067] The processor 202 communicates with various devices provided in the medical image capture apparatus 10 via an input / output interface 208, thereby transmitting and receiving necessary information.

[0068] The display device 24 displays various information in addition to medical images captured by the medical image capturing apparatus 10. The display device 24 is used as a part of a GUI (Graphical User Interface) when receiving input from the input device 22. The display device 24 is not limited to one, and may be in the form of a multi-display having a plurality of display devices.

[0069] [Operation flow of medical image diagnostic system 1] 5 is a flowchart showing Example 1 of the operation method of the medical image diagnostic system 1. In step S11, the processor 202 performs calibration to grasp the overall length of the cable 32. A subroutine of the calibration process will be described later with reference to FIG.

[0070] After step S11, in step S12, the operator attaches the cable 32 and the like to the subject on the bed 14. Here, the cable 32 of the electrocardiograph 30 is exemplified, but instead of or in addition to the cable 32, a tube of an injector or a cable of another vital sign monitor may be attached to the subject. When a plurality of cable-like members are attached to the subject, it is preferable that a fixed end sensor 35 and a moving end sensor 36 are disposed at both ends of each cable-like member, similarly to the cable 32.

[0071] In step S13, the processor 202 recognizes the fixed end sensor 35. In step S14, the processor 202 recognizes the moving end sensor 36. The processor 202 may determine that both the fixed end sensor 35 and the moving end sensor 36 have been recognized by acquiring measurement information of the distance between the fixed end sensor 35 and the moving end sensor 36 from the fixed end sensor 35.

[0072] In step S15, the processor 202 determines whether or not both sensors have been recognized. If the processor 202 fails to recognize both sensors and the determination result in step S15 is a No determination, the processor 202 proceeds to step S16. In step S16, the processor 202 presents an alert for sensor installation confirmation and for confirmation of an obstacle between the sensors.

[0073] The sensor installation confirmation alert is an alert that prompts the operator to check the installation status of the sensors. The sensor obstacle confirmation alert is an alert that prompts the operator to check for obstacles between the sensors. Upon receiving the alert, the operator checks the installation status of the fixed end sensor 35 and the moving end sensor 36, and if there is an improper installation status, takes measures to correct the improper installation status. Furthermore, upon receiving the alert, the operator checks whether there is an obstacle between the fixed end sensor 35 and the moving end sensor 36, and if there is an improper obstacle, takes measures to remove the obstacle.

[0074] After step S16, the processor 202 returns to step S 13. If the processor 202 succeeds in recognizing both sensors in steps S13 and S14 and the determination result in step S15 is Yes, the processor 202 proceeds to step S18.

[0075] In step S18, the processor 202 accepts an input of settings of imaging conditions. The operator sets imaging conditions according to the imaging region of the subject PT.

[0076] In step S19, the processor 202 reads the set imaging conditions. The imaging conditions include information on the bed movement amount.

[0077] Next, in step S20, the processor 202 calculates the bed safe movement range. The bed safe movement range is an allowable movement range in which the bed 14 can be moved safely taking into account the length of the cable 32, and is calculated based on the entire length of the cable 32, the distance between both ends of the cable 32, the positions of both ends of the cable 32, and the bed movement direction. A subroutine for the calculation process of the bed safe movement range will be described later with reference to FIG. 7.

[0078] Next, in step S21, the processor 202 determines whether or not the bed movement amount set in the imaging conditions is within the safe bed movement range.

[0079] When the bed movement amount set in the imaging conditions exceeds the safe bed movement range and the determination result of step S21 is No, the processor 202 proceeds to step S22.

[0080] In step S22, the processor 202 issues an alert indicating that the bed movement amount set in the imaging conditions exceeds the bed safe movement range, and presents the bed safe movement range. By presenting the bed safe movement range, the operator is prompted to change the imaging conditions to an appropriate bed movement amount. After step S22, the processor 202 returns to step S18.

[0081] When the bed movement amount set in the imaging conditions is within the bed safe movement range and the determination result in step S21 is a Yes determination, the processor 202 permits the execution of imaging and proceeds to step S24.

[0082] In step S24, the processor 202 performs shooting according to the shooting conditions. The processor 202 displays on the display device 24 that shooting is possible, and performs shooting by receiving an operation to start shooting from the operator. Note that the processor 202 may automatically perform shooting when shooting is permitted. After step S24, the flowchart in FIG. 5 ends.

[0083] FIG. 6 is a flowchart showing an example of the calibration process applied to step S11 in FIG.

[0084] In step S31, the processor 202 determines whether the cable 32 used in the current imaging is the same cable and the same sensor position as the previous imaging. The determination process in step S31 is a process for determining whether or not it is necessary to perform calibration to measure the total length of the cable 32. The information processing device 20 holds information on the cable-like member used last time in the memory 204 and / or the storage 206, and the processor 202 determines that calibration is not necessary if the cable 32 and the position of the sensor 34 used in the current imaging are the same as the previous time, and that calibration is necessary if they are different from the previous time.

[0085] The processor 202 may display information such as the type and total length of the previously used cable-like member on the display device 24 and may receive an instruction from the operator by providing a GUI that allows the operator to select whether or not the cable-like member is the same as the previous one. Alternatively, the processor 202 may obtain information about the cable 32 by reading an information code such as a barcode attached to the cable 32, and compare the information with information stored in the memory 204 or the like to determine whether the information matches or does not match.

[0086] If the determination result in step S31 is No, the process proceeds to step S32 since the total length of the cable 32 needs to be measured.

[0087] In step S32, the operator sets the cable 32 in a horizontal state with no slack. Since step S32 is performed before the cable 32 is attached to the subject, the end of the cable 32 on the subject side (the end where the moving end sensor 36 is located) can be moved to any position within the range of the entire length of the cable. During calibration, the cable 32 is placed in a horizontal state with no slack and the distance between both ends is measured.

[0088] Steps S33 to S35 after step S32 are similar to steps S13 to S15 in FIG.

[0089] If the determination result of step S35 is a No determination, the processor 202 proceeds to step S36. In step S36, the processor 202 presents an alert for sensor installation confirmation and obstacle confirmation between the sensors, similar to step S16 in the figure. After step S36, the processor 202 returns to step S32.

[0090] If the determination result in step S35 is Yes, the processor 202 proceeds to step S37. In step S37, the processor 202 measures the overall length L of the cable 32. When the cable 32 is in a horizontal state with no slack, the distance between the fixed end sensor 35 and the moving end sensor 36 arranged at both ends of the cable 32 measured by the sensors can be the overall length L of the cable 32. Note that, taking into consideration the offset between the installation locations of the fixed end sensor 35 and the moving end sensor 36 with respect to the cable 32 and the both ends of the cable that define the overall length L, the total length L of the cable 32 may be determined by adding a predetermined correction value to the measured distance between the sensors.

[0091] The total length L of the cable 32 measured in step S37 is stored in a storage device such as the memory 204 in association with information specifying the type of the cable 32 used and date and time information.

[0092] After step S37, the processor 202 returns to the flowchart of Fig. 5. If the determination result of step S31 is Yes, measurement of the total length L is not necessary, so the processor 202 skips steps S32 to S36, ends the flowchart of Fig. 6, and returns to the flowchart of Fig. 5.

[0093] 6 has been described as an example of measuring the total length L of cable 32 using fixed end sensor 35 and moving end sensor 36, but information on the type of cable 32 and total length L may be input from input device 22. Also, information on the respective total lengths of a plurality of cables that may be used may be stored in advance as a table in memory 204 or the like, and information on the total length of the relevant cable may be obtained by having an operator, etc., select a cable to be used via a GUI.

[0094] Fig. 7 is a flowchart showing an example of a calculation process of the bed safe movement range applied to step S20 in Fig. 5. For ease of explanation, it is assumed here that the fixed end sensor 35 and the moving end sensor 36 are on the same straight line parallel to the bed movement direction.

[0095] 7, the current inter-sensor distance A is measured using the fixed end sensor 35 and the moving end sensor 36. The processor 202 acquires the measurement value of the inter-sensor distance A.

[0096] Next, in step S42, the processor 202 determines whether the bed movement direction is a direction from the fixed end sensor 35 toward the moving end sensor 36. The bed movement direction here refers to the moving direction of the bed 14 when the subject enters the imaging space 13 of the gantry 12 from the current bed position. The process branches depending on the positional relationship in the Z-axis direction between the (current) fixed end sensor 35 before the bed movement, the moving end sensor 36, and the imaging space 13 of the gantry 12.

[0097] That is, in terms of the positional relationship in the Z-axis direction, when the fixed end sensor 35 is located farther from the imaging space 13 of the gantry 12 than the moving end sensor 36, the bed movement direction is from the fixed end sensor 35 to the moving end sensor 36, and the determination result in step S42 is Yes. Conversely, when the moving end sensor 36 is located farther from the imaging space 13 of the gantry 12 than the fixed end sensor 35, the bed movement direction is from the moving end sensor 36 to the fixed end sensor 35, and the determination result in step S42 is No.

[0098] When the determination result of step S42 is a Yes determination, the processor 202 proceeds to step S43. In step S43, the processor 202 calculates the safe movement distance S of the bed 14 by the following formula.

[0099] S=LA That is, the safe movable distance S is a value obtained by subtracting the current inter-sensor distance A from the overall length L of the cable 32.

[0100] The safe moving distance S is the upper limit of the distance (movable limit distance) over which the bed 14 can be safely moved in the bed movement direction, and the range of distances equal to or less than the safe moving distance S is the bed safe moving range. Calculating the safe moving distance S is equivalent to calculating the bed safe moving range.

[0101] On the other hand, if the determination result in step S42 is No, the processor 202 proceeds to step S44. In step S44, the processor 202 calculates the safe movement distance S of the bed 14 by the following formula.

[0102] S=L+A That is, the safe moving distance S is a value obtained by adding the current inter-sensor distance A to the total length L of the cable 32. The safe moving range of the bed limited by the safe moving distance S is an example of the "safe moving range" in this disclosure.

[0103] When the Z-axis position of the fixed end sensor 35 and the Z-axis position of the moving end sensor 36 coincide with each other, the sensor distance A is A=0, and the calculation result of the safe moving distance S is the same regardless of whether the process proceeds to step S43 or step S44. Therefore, the process when the fixed end sensor 35 and the moving end sensor 36 are at the same Z-axis position may be performed in step S43 or in step S44.

[0104] After step S43 or step S44, the processor 202 ends the flowchart in FIG. 7, and returns to the flowchart in FIG.

[0105] [When the fixed end sensor 35 and the moving end sensor 36 are not on the same line parallel to the bed moving direction] In the explanation of the flowchart shown in Figure 7, it is assumed that the fixed end sensor 35 and the moving end sensor 36 are on the same line parallel to the bed movement direction. However, if the fixed end sensor 35 and the moving end sensor 36 are not on the same line parallel to the bed movement direction (see Figure 8), the measured distance between the sensors is converted into a distance on the same line parallel to the bed movement direction and the processing of the above-mentioned flowchart is performed.

[0106] Fig. 8 is a schematic plan view showing an example of the positional relationship between the fixed end sensor 35 and the moving end sensor 36. The direction in which the bed 14 moves (bed moving direction) is the upward direction in Fig. 8. The electrocardiograph 30 is disposed on the left side of Fig. 8 with respect to the bed 14, and the fixed end sensor 35 and the moving end sensor 36 are not on the same straight line parallel to the bed moving direction. In this case, the measured inter-sensor distance Ap is converted into a distance on the same straight line (inter-sensor distance A), and the process of the flowchart in Fig. 7 is performed using the inter-sensor distance A obtained by the conversion.

[0107] [Functional configuration of information processing device 20] 9 is a block diagram showing the functional configuration of the information processing device 20. The information processing device 20 includes a sensor information acquisition unit 220, a cable end detection unit 222, an end-to-end distance measurement unit 224, a storage unit 226, a safe movement range calculation unit 228, an imaging condition setting unit 230, a comparison and determination unit 232, a notification unit 236, a control unit 240, an image processing unit 250, and an image storage unit 252.

[0108] The sensor information acquisition unit 220 acquires information from the sensor 34. The cable end detection unit 222 detects the positions of both ends of the cable 32 based on the information from the sensor 34. The positions of both ends of the cable 32 may be detected as the positions of the fixed end sensor 35 and the moving end sensor 36.

[0109] The end-to-end distance measuring unit 224 measures the distance between the ends of the cable 32 based on information from the sensor 34. The distance between the ends of the cable 32 may be measured as the distance between the fixed end sensor 35 and the moving end sensor 36. The end-to-end distance measuring unit 224 may measure the distance based on the positions of the ends detected by the cable end detection unit 222.

[0110] The sensor 34 may incorporate at least one of the processing units, the cable end detection unit 222 and the end-to-end distance measurement unit 224.

[0111] Various types of information including cable attribute information and sensor position information regarding the cable 32 used are stored in the storage unit 226. The cable attribute information includes the total length L of the cable 32 and the type of the cable 32 obtained by the calibration process.

[0112] The safe movement range calculation unit 228 calculates the safe movement range of the bed 14 based on the total length L of the cable 32, the positions of both ends of the cable 32, the distance between the two ends, and the bed movement direction.

[0113] The imaging condition setting unit 230 accepts the designation of imaging conditions via the input device 22 and sets the designated imaging conditions. The comparison and determination unit 232 compares the bed movement amount set in the imaging conditions with the safe movement range. If the bed movement amount exceeds the safe movement range, the comparison and determination unit 232 issues a command to the notification unit 236 to issue a notification such as an alert before imaging begins. On the other hand, if the bed movement amount is within the safe movement range, the comparison and determination unit 232 issues a signal to the control unit 240 to permit imaging.

[0114] The notification unit 236 performs processing to notify that the bed movement amount of the imaging condition exceeds the safe movement range upon receiving the judgment result of the comparison judgment unit 232. For example, the notification unit 236 causes the display device 24 to display an alert. The notification unit 236 may cause the display device 24 to display the safe movement range of the bed 14 together with the alert.

[0115] The control unit 240 includes a bed control unit 242 and an imaging control unit 244. The bed control unit 242 controls the movement of the bed 14. The bed 14 includes a bed driving unit 152. The bed driving unit 152 moves the top 15 in accordance with commands from the bed control unit 242. The top driving device including the bed driving unit 152 is an example of a "driving mechanism" in this disclosure. The imaging control unit 244 controls the scanning operation of the gantry 12. The control unit 240 receives the determination result from the comparison and determination unit 232 and executes the movement of the bed 14 and imaging in accordance with the imaging conditions.

[0116] The projection data obtained from the gantry 12 by imaging is sent to the image processing unit 250, where image reconstruction processing is performed. The image data (medical image) reconstructed by the image processing unit 250 is stored in the image storage unit 252. The image storage unit 252 may be an internal storage of the information processing device 20, or may be an external storage device such as a DICOM (Digital Imaging and Communication in Medicine) server. The medical image reconstructed by the image processing unit 250 is displayed on the display device 24.

[0117] 2 can function as the memory unit 124 and the image storage unit 252. The system control device 124 described in FIG. 2 functions as the control unit 240, and the image processing device 122 functions as the image processing unit 250.

[0118] [Modifications] Fig. 10 is a flowchart showing a second example of the operation of the medical image diagnostic system 1. The flowchart shown in Fig. 10 may be applied instead of the flowchart explained in Fig. 5. Differences between the flowchart in Fig. 10 and the flowchart in Fig. 5 will be explained.

[0119] The flowchart in Fig. 10 includes step S23 instead of step S22 in Fig. 5. The other steps are similar to those in the flowchart in Fig. 5.

[0120] If the determination result in step S21 in FIG. 10 is a No determination, the processor 202 proceeds to step S23.

[0121] In step S23, the processor 202 executes a process of calculating and presenting the optimum device position. The optimum device position is a destination position (installation position) of the medical device when the position of the medical device is changed so that imaging can be performed without changing the imaging conditions, and in this embodiment, is a recommended destination position of the electrocardiograph 30 when the position of the electrocardiograph 30 is changed. The optimum device position can be expressed by a required moving distance from the current position of the medical device.

[0122] The subroutine for calculating and presenting the optimum device position applied in step S23 will be described later with reference to FIG.

[0123] After step S23, the processor 202 returns to step S 18. The operations of the other steps are as described in FIG.

[0124] FIG. 11 is a flowchart showing an example of the process of calculating and presenting the optimum device position which is applied in step S23 of FIG.

[0125] In step S51, the processor 202 determines whether or not the bed movement amount, which is an imaging condition, is less than twice the total length L of the cable 32. If the determination result in step S51 is Yes, the processor 202 proceeds to step S52.

[0126] In step S52, the processor 202 obtains a value obtained by subtracting the safe movement distance S from the bed movement amount of the imaging conditions as the distance M required for equipment movement.

[0127] Next, in step S53, the processor 202 determines whether the bed movement direction is from the fixed end sensor 35 toward the movement end sensor 36. If the determination result in step S53 is Yes, the processor 202 proceeds to step S54. In step S54, the processor 202 presents a required equipment movement distance M in the direction from the fixed end sensor 35 to the movement end sensor 36.

[0128] On the other hand, if the determination result in step S53 is a No determination, the processor 202 proceeds to step S55. In step S55, the processor 202 presents the required device movement distance M in the direction from the moving end sensor 36 to the fixed end sensor 35. After step S54 or step S55, the processor 202 returns to the flowchart in FIG.

[0129] Also, when the judgment result of step S51 is No judgment, the processor 202 proceeds to step S56. When the bed movement amount of the imaging condition is 2L or more, even if the position of the medical device is moved within the range of ±L from the current position, the bed movement amount cannot be kept within the safe movement range. Therefore, in step S56, the processor 202 executes a process of requesting reconsideration of the imaging conditions. The processor 202 causes the display device 24 to display a message or the like that prompts the operator to review the imaging conditions.

[0130] After step S56, the processor 202 returns to the flowchart of FIG.

[0131] [Functional configuration of information processing device 20 according to a modified example] Fig. 12 is a block diagram showing a functional configuration of an information processing device 20 according to a modified example. Regarding the configuration shown in Fig. 12, differences from the configuration in Fig. 9 will be described.

[0132] The information processing device 20 shown in Fig. 12 differs from the configuration in Fig. 9 in that an equipment optimum position calculation unit 234 is added. The other configurations may be the same as those in Fig. 9. The equipment optimum position calculation unit 234 is a processing unit that performs the process described in the flowchart of Fig. 11.

[0133] The device optimum position calculation unit 234 receives the determination result of the comparison and determination unit 232 and performs the process described in the flowchart of Fig. 11. The device movement necessary distance M calculated by the device optimum position calculation unit 234 is displayed on the display device 24 via the notification unit 236.

[0134] <Hardware configuration of each processing unit> The hardware structure of the processing units that execute various processes, such as the sensor information acquisition unit 220, the cable end detection unit 222, the end-to-end distance measurement unit 224, the safe movement range calculation unit 228, the shooting condition setting unit 230, the comparison judgment unit 232, the device optimum position calculation unit 234, the notification unit 236, the control unit 240, and the image processing unit 250 in the information processing device 20 shown in Figures 9 and 12, is, for example, various processors as shown below.

[0135] Various types of processors include CPUs, which are general-purpose processors that execute programs and function as various processing units, GPUs, programmable logic devices (PLDs), such as FPGAs (Field Programmable Gate Arrays), which are processors whose circuit configuration can be changed after manufacture, and dedicated electrical circuits, such as ASICs (Application Specific Integrated Circuits), which are processors with a circuit configuration designed specifically to execute specific processes.

[0136] A processing unit may be composed of one of these various processors, or may be composed of two or more processors of the same type or different types. For example, a processing unit may be composed of multiple FPGAs, or a combination of a CPU and an FPGA, or a combination of a CPU and a GPU. Also, multiple processing units may be composed of one processor. As an example of multiple processing units being composed of one processor, first, as represented by a computer such as a client or a server, there is a form in which one processor is composed of a combination of one or more CPUs and software, and this processor functions as multiple processing units. Second, as represented by a system on chip (SoC), there is a form in which a processor is used that realizes the functions of the entire system including multiple processing units in one IC (Integrated Circuit) chip. In this way, the various processing units are composed of one or more of the above various processors as a hardware structure.

[0137] Furthermore, the hardware structure of these various processors is, more specifically, an electric circuit that combines circuit elements such as semiconductor elements.

[0138] [Effects of the first embodiment] According to the medical image diagnostic system 1 according to the first embodiment, the following effects can be obtained.

[0139] [1] It reduces the burden on people (operators, etc.) who perform tasks required for examinations or assist subjects in the examination room to check the cable condition.

[0140] [2] When the range of movement of the bed 14 is limited by the total length L of the cable 32 being used and the current cable state (state of the positions of both ends), a comparison of the safe range of movement with the bed movement amount under the imaging conditions can be made before imaging begins.

[0141] [3] If the bed movement amount set in the imaging conditions exceeds the safe movement range of the bed 14, an alert or the like is issued before imaging begins, thereby avoiding dangers such as the cable 32 becoming entangled or pulled due to bed movement.

[0142] [4] When an alert is issued, information about the couch safety range is presented, allowing the operator to take appropriate action, such as changing the imaging conditions within the presented couch safety range.

[0143] [5] If there is an obstacle or the like along the cable 32, an alert or the like can be issued before shooting begins, thereby improving operability and enabling danger to be avoided.

[0144] [6] This reduces the need to retake scans, thereby reducing unnecessary radiation exposure.

[0145] Furthermore, according to the medical image diagnostic system 1 according to the modified example of the first embodiment, the following effects can be obtained.

[0146] [7] When the bed movement amount set in the shooting conditions exceeds the safe movement range of the bed 14, a required equipment movement distance M is displayed, indicating the appropriate installation position of the electrocardiograph 30 to enable shooting under the shooting conditions. The operator can then move the electrocardiograph 30 according to the displayed information to perform shooting.

[0147] Second Embodiment In the first embodiment, an example in which a distance measuring sensor is used has been described, but a camera may be used instead of the distance measuring sensor. By performing image analysis on an image captured by the camera, it is possible to detect both ends of the cable 32 and calculate the length of the cable 32. In order to accurately detect the positions of both ends of the cable 32 and the distance between the two ends, it is preferable to use a three-dimensional (3D) camera or a plurality of cameras. The camera may be installed at an appropriate position in the examination room using a tripod or the like, or may be fixed to the ceiling, wall, or the like of the examination room. The camera may also be attached to the gantry 12.

[0148] When a camera is used, instead of steps S13 and S14 in Fig. 5 and steps S33 and S34 in Fig. 6, the processor 202 may perform image analysis on an image captured by the camera to recognize subjects such as a medical device such as an electrocardiograph 30 and the cable 32, and detect the end of the cable 32. Also, a marker may be attached to the end of the cable 32, and the end of the cable 32 may be detected by recognizing the marker through image analysis. Then, instead of step S15 in Fig. 5 and step S35 in Fig. 6, it may be determined whether or not both ends of the cable 32 have been detected.

[0149] Regarding step S16 in FIG. 5 and step S36 in FIG. 6, if a camera is used, the processor 202 may recognize obstacles from an image captured by the camera by image analysis, and if an obstacle is present, the obstacle may be presented.

[0150] In the second embodiment, the same effects as in the first embodiment can be obtained.

[0151] About the programs that run computers A program that causes a computer to realize some or all of the processing functions of the information processing device 20 in each of the first embodiment, the modified example of the first embodiment, and the second embodiment can be recorded on a computer-readable medium that is a non-transitory information storage medium such as an optical disk, a magnetic disk, a semiconductor memory, or other tangible object, and the program can be provided through this information storage medium.

[0152] In addition, instead of providing the program by storing it on such a tangible, non-transitory computer-readable medium, it is also possible to provide the program signal as a download service using a telecommunications line such as the Internet.

[0153] Furthermore, some or all of the processing functions of the information processing device 20 may be realized by cloud computing, and may also be provided as SaaS (Software as a Service).

[0154] "others" The present disclosure is not limited to the above-described embodiment, and various modifications are possible without departing from the spirit and scope of the technical idea of ​​the present disclosure. [Explanation of symbols]

[0155] 1. Medical imaging diagnostic system 10. Medical imaging equipment 12. Gantry 13...Shooting space 14…Bed 15…Tabletop 16…Console 20...Information processing device 22...Input device 24…Display device 30...Electrocardiogram 32…Cable 34…Sensor 35…Fixed end sensor 36...Moving end sensor 202…Processor

Claims

1. a medical imaging device that captures a medical image of a subject wearing a cable-like member connected to a medical device; and a sensor that detects both ends of the cable-like member worn on the subject. a processor that acquires information from the sensor, calculates a safe movement range of the bed based on a total length of the cable-like member, a distance between the two ends, positions of the two ends, and a movement direction of the bed carrying the subject, and permits imaging when an amount of movement of the bed based on imaging conditions is within the safe movement range; A medical image diagnostic system comprising:

2. The processor, when a movement amount of the bed based on the imaging conditions exceeds the safe movement range, a notification that the movement amount of the bed will exceed the safe movement range is given before imaging is started. The medical image diagnostic system according to claim 1 .

3. The processor, When a movement amount of the bed based on the imaging conditions exceeds the safe movement range, the safe movement range is presented before starting imaging. The medical image diagnostic system according to claim 1 .

4. The processor, When the movement amount of the bed based on the imaging conditions exceeds the safe movement range, a necessary equipment movement distance indicating an installation position of the medical equipment that enables imaging under the imaging conditions to be performed is calculated, and the necessary equipment movement distance is presented before imaging is started. The medical image diagnostic system according to claim 1 .

5. The processor, when the movement amount of the bed based on the imaging conditions is less than twice the total length of the cable-like member, the necessary device movement distance of the medical device is calculated by subtracting a movable limit distance of the safe movable range from the movement amount of the bed based on the imaging conditions. The medical image diagnostic system according to claim 4 .

6. The medical device includes at least one of an electrocardiograph, a vital sign monitor, and a contrast agent injection device. The medical image diagnostic system according to claim 1 .

7. The cable-like member includes at least one of a cable and a tube connecting the medical device and the subject. The medical image diagnostic system according to claim 1 .

8. The bed is A top plate on which the subject is placed and moved; A drive mechanism for moving the tabletop into an imaging space of the medical imaging apparatus. The medical image diagnostic system according to claim 1 .

9. The medical imaging apparatus includes a gantry and the bed. The medical image diagnostic system according to claim 1 .

10. The sensor includes a first end sensor disposed at an end of the cable-like member on the side of the medical device, and a second end sensor disposed at an end of the cable-like member on the side of the subject. A distance measuring sensor including: The medical image diagnostic system according to claim 1 .

11. The sensor includes a camera. By analyzing the image captured by the camera, information on the positions of the two ends of the cable-like member and the distance between the two ends is obtained. The medical image diagnostic system according to claim 1 .

12. Based on the information obtained from the sensor, the total length of the cable-like member is measured. The medical image diagnostic system according to claim 1 .

13. The measurement of the overall length of the cable-like member is performed before attaching the cable-like member to the subject. The medical image diagnostic system according to claim 12.

14. When both ends of the cable-like member are not detected by the sensor, the processor issues an alert. The medical image diagnostic system according to claim 1 .

15. When both ends of the cable-like member detected using the sensor are on the same straight line parallel to the moving direction of the bed, when the moving direction of the bed is from the end of the cable-like member on the medical device side to the end of the subject side, the processor calculates the safe movement range by subtracting the distance between the both ends from the total length of the cable-like member; When the direction of movement of the bed is from the end of the cable-like member on the subject side to the end of the medical device side, the safe movement range is calculated by adding the distance between the two ends to the entire length of the cable-like member. The medical image diagnostic system according to claim 1 .

16. When both ends of the cable-like member detected by the sensor are not on the same straight line parallel to the moving direction of the bed, the processor uses a converted distance obtained by converting the distance between the both ends into a distance on the same straight line, and when the moving direction of the bed is from the end of the cable-like member on the medical device side to the end of the subject side, calculates the safe movement range by subtracting the converted distance from the overall length of the cable-like member; when the direction of movement of the bed is from the end of the cable-like member on the subject side to the end of the medical device side, the safe movement range is calculated by adding the converted distance to the entire length of the cable-like member. The medical image diagnostic system according to claim 1 .

17. 1. A method of operating a medical imaging diagnostic system, comprising: When a medical image of a subject is captured using a medical image capturing device in a state where a cable-like member connected to a medical device is attached to the subject, detecting both ends of the cable-like member attached to the subject using a sensor; a processor acquires information from the sensor, calculates a safe movement range of the bed based on a total length of the cable-like member, a distance between the two ends, positions of the two ends, and a movement direction of the bed carrying the subject, and permits imaging when an amount of movement of the bed based on imaging conditions is within the safe movement range; A method of operating a medical imaging diagnostic system comprising:

18. a function of acquiring information from sensors that detect both ends of a cable-like member attached to a subject when a medical image of the subject is captured using a medical image capture device in a state where the cable-like member connected to a medical device is attached to the subject; a function of calculating a safe range of motion of the bed based on the total length of the cable-like member, the distance between the two ends, the positions of the two ends, and the moving direction of the bed on which the subject is placed; and a program for causing a computer to realize a function of permitting imaging when an amount of movement of the bed based on imaging conditions is within the safe movement range.

Images