Medical image diagnostic device and x-ray ct device

Abstract

To effectively utilize residual energy as compared with conventional techniques.SOLUTION: A medical image diagnostic device includes a first power conversion unit, a first unit, a second unit, a determination unit and a power supply control unit. The first power conversion unit has a capacitor, and converts an AC voltage into a DC voltage. The first unit is driven with first power. The second unit is driven with power lower than the first power. The determination unit determines a unit to which residual energy that remains in the capacitor is supplied on the basis of energy information related to the energy remaining in the capacitor after scanning an analyte. The power supply control unit supplies the residual energy to that unit.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The embodiments disclosed in this specification relate to a medical image diagnostic apparatus and an X-ray CT apparatus. [Background technology]

[0002] Conventionally, medical image diagnostic devices use large-capacity smoothing capacitors in the process of converting AC voltage supplied from an external power source into DC voltage using an AC / DC converter. After the power is turned off, the residual energy stored in the capacitor is naturally discharged or consumed by a discharge resistor. Patent Document 1 describes a technology for transferring this residual energy to a storage element and effectively utilizing the energy transferred to the storage element. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-124022 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the capacity of the residual energy is small enough to transfer the residual energy to the storage element, and the storage element must be installed outside the medical image diagnostic device and in a separate space, so there is room for further improvement in order to make effective use of the residual energy.

[0005] One of the problems that the embodiments disclosed in this specification and the drawings aim to solve is to utilize residual energy more effectively than in the past. However, the problems that the embodiments disclosed in this specification and the drawings aim to solve are not limited to the above problem. Problems corresponding to the effects of the configurations shown in the embodiments described below can also be positioned as other problems. [Means for solving the problem]

[0006] The medical image diagnostic apparatus according to this embodiment includes a first power conversion unit, a first unit, a second unit, a determination unit, and a power supply control unit. The first power conversion unit has a capacitor and converts AC voltage to DC voltage. The first unit is driven with a first power. The second unit is driven with a power lower than the first power. The determination unit determines the unit to supply the residual energy remaining in the capacitor after a scan of the subject based on energy information regarding the energy remaining in the capacitor. The power supply control unit controls the supply of the residual energy to the units. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a front view showing an example of the appearance of a gantry device of an X-ray CT apparatus according to an embodiment. [Figure 2] FIG. 2 is a cross-sectional view showing an example of a gantry device of the X-ray CT apparatus according to the embodiment. [Figure 3] FIG. 3 is a schematic diagram illustrating an example of the power storage control device according to the embodiment. [Figure 4] FIG. 4 is a diagram illustrating an example of the functional configuration of the power storage control device according to the embodiment. [Figure 5] FIG. 5 is a schematic diagram illustrating an example of output information according to the embodiment. [Figure 6] FIG. 6 is a flowchart illustrating an example of processing performed by the power storage control device according to the embodiment. [Figure 7] FIG. 7 is a flowchart showing an example of processing performed by the power storage control device according to the first modified example. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, a medical image diagnostic apparatus and an X-ray CT apparatus according to an embodiment will be described in detail with reference to the drawings. In the following description, parts with the same reference numerals perform similar operations, and redundant description will be omitted as appropriate.

[0009] (Embodiment) An X-ray CT (Computed Tomography) apparatus 1 will be described as an example of a medical image diagnostic apparatus according to an embodiment. Fig. 1 is a front view showing an example of the appearance of a gantry device 10 of the X-ray CT apparatus 1 according to an embodiment. Fig. 2 is a cross-sectional view showing an example of the gantry device 10 of the X-ray CT apparatus 1 according to an embodiment.

[0010] The X-ray CT apparatus 1 includes a gantry device 10 and a bed device (not shown).

[0011] In this embodiment, the Z-axis direction is defined as the rotation axis of the X-ray tube and X-ray detector built into the gantry 10 in a non-tilted state, or the insertion direction of the subject inserted into the opening 11 of the gantry 10. The X-axis direction is defined as the axial direction that is perpendicular to the Z-axis direction and horizontal to the floor. The Y-axis direction is defined as the axial direction that is perpendicular to the Z-axis direction and vertical to the floor.

[0012] The gantry 10 is a device that irradiates an object such as a patient with X-rays and collects projection data from detection data obtained by detecting the X-rays that have passed through the object. The gantry 10 is covered with an exterior cover 12. The gantry 10 incorporates an X-ray tube that irradiates X-rays and an X-ray detector that detects the X-rays irradiated by the X-ray tube.

[0013] An X-ray tube is a vacuum tube that generates X-rays by irradiating thermions from a cathode (filament) to an anode (target) when high voltage is applied from an X-ray high-voltage device. For example, there is a rotating anode type X-ray tube that generates X-rays by irradiating thermions onto a rotating anode.

[0014] The X-ray detector is disposed at a position opposite to the X-ray tube. The X-ray detector detects X-rays emitted from the X-ray tube and passed through the subject, and outputs an electrical signal corresponding to the X-ray dose to a DAS (Data Acquisition System). The X-ray detector has, for example, a plurality of X-ray detection element rows, in which a plurality of X-ray detection elements are arranged in the channel direction along a single arc centered on the focal point of the X-ray tube. The X-ray detector has, for example, a structure in which a plurality of X-ray detection element rows, in which a plurality of X-ray detection elements are arranged in the channel direction, are arranged in the slice direction (row direction).

[0015] The gantry 10 has an opening 11 into which a subject is inserted. The opening 11 is an example of a first opening. The opening 11 is provided approximately in the center of the gantry 10 and is a cylindrical opening into which a subject is inserted. The subject placed on the top board of a bed device is inserted into the opening 11. The opening 11 is provided in an imaging area formed around the rotation axis of an X-ray tube and an X-ray detector.

[0016] The front side of the gantry 10 has a first flared portion 13 that is recessed along the opening 11. Here, the front side is the side of the gantry 10 where the bed device is located. Similarly, the rear side of the gantry 10 has a second flared portion 14 that is recessed along the opening 11. The rear side is the side opposite to the front side and where the bed device is not located.

[0017] Furthermore, the gantry 10 does not have an exterior cover 12 on the surface in contact with the opening 11, and has an internal opening 111 that opens to the inside of the gantry 10. The internal opening 111 is closed by a cylindrical closing cover 112. That is, the gantry 10 has the closing cover 112 that covers the internal opening 111 provided on the surface in contact with the opening 11. The internal opening 111 is an example of a second opening.

[0018] The closing cover 112 is a cover having a thickness of 3 to 4 millimeters. The closing cover 112 is made of a material that is transparent to X-rays. X-rays emitted from the X-ray tube pass through an area of ​​the closing cover 112 that is approximately the center one-third of the Z-axis direction. The closing cover 112 is colored so that the X-ray tube and X-ray detector built into the gantry device 10 are not visible to the subject inserted into the opening 11. The closing cover 112 is made of a material such as plastic that is transparent to ultraviolet light. The sterilization light source 113 shown in FIG. 2 is disposed inside the closing cover 112.

[0019] The sterilization light source 113 is arranged outside the area where X-rays pass from the X-ray tube to the X-ray detector. Specifically, the sterilization light source 113 is arranged inside the exterior cover 12, along the edge of the front side of the closure cover 112. In other words, the sterilization light source 113 is arranged inside the closure cover 112, on the side where the bed device on which the specimen is placed is located. The sterilization light source 113 is an example of a first unit. The first unit is driven by a first power.

[0020] The sterilization light source 113 is a light source that emits light capable of sterilization. Sterilization means reducing the number of viruses, bacteria, and other microorganisms. Sterilization can also be interpreted as sterilization, disinfection, sterilization, or disinfection. Sterilization means killing (inactivating) bacteria, viruses, and other microorganisms present in an object. In other words, the sterilization light source 113 is a light source that emits light capable of reducing the number of viruses, bacteria, and the like. For example, the sterilization light source 113 is a light source that emits ultraviolet light.

[0021] The sterilization light source 113 is disposed inside the gantry 10 relative to the closing cover 112 and faces the opening 11. That is, the sterilization light source 113 irradiates sterilizable light toward the center of the opening 11. The sterilization light source 113 is an example of a light source. The closing cover 112 is formed of a material that transmits ultraviolet light.

[0022] In addition, when the rotation axis of the X-ray tube and the X-ray detector is taken as the center, the sterilization light sources 113 are arranged 360 degrees around the rotation axis. The sterilization light sources 113 irradiate the space of the opening 11 and the first flare portion 13 with sterilization light through the closing cover 112.

[0023] When the table top of the bed apparatus is inserted into the opening 11, the sterilization light source 113 irradiates the table top with sterilization light. In this way, the sterilization light source 113 can sterilize the table top. Note that the gantry apparatus 10 shown in FIG. 2 is shown with one sterilization light source 113 arranged. However, typically, the gantry apparatus 10 is equipped with multiple sterilization light sources 113. Also, the sterilization light source 113 shown in FIG. 2 is arranged on the front side where the bed apparatus is arranged, but it may also be arranged on the rear side opposite the front side. Note that the sterilization light source 113 is not limited to being arranged inside the closing cover 112, but may also be arranged on the outside.

[0024] As shown in FIG. 1, the gantry device 10 has operation panels 15 on the left and right sides of the opening 11, which receive touch operations. The operation panels 15 are display devices that, when a displayed image is touched, receive operations corresponding to the touched image. The operation panels 15 are an example of a second unit. The second unit is driven with lower power than the first unit.

[0025] The gantry 10 also has operation buttons 16 below the operation panels 15. The operation buttons 16 are buttons that accept operations associated with the operation buttons 16. The gantry 10 shown in FIG. 1 has one operation button 16 below each operation panel 15. However, the gantry 10 may have multiple operation buttons 16 below the operation panels 15.

[0026] The operation panel 15 and the operation buttons 16 accept various operations. That is, the operation panel 15 and the operation buttons 16 are touchable by medical staff. The gantry device 10 shown in FIG. 1 has two operation buttons 16. However, the gantry device 10 may not have any operation buttons 16, may have one operation button 16, or may have three or more operation buttons 16. Furthermore, the arrangement position of the operation buttons 16 on the gantry device 10 shown in FIG. 1 is an example, and the operation buttons 16 may be arranged in any position.

[0027] Based on the operation information received by the operation panel 15, the gantry device 10 inserts the top plate of the bed device into the opening 11, supplies power to the sterilization light source 113, and then irradiates the top plate with sterilization light from the sterilization light source 113. The gantry device 10 irradiates the top plate with sterilization light from the sterilization light source 113 when the top plate will not be used for a long period of time, such as during a break in the hospital or at the end of business hours. Details of the operation information will be described later.

[0028] The gantry device 10 includes a power storage control device 24. The power storage control device 24 will now be described with reference to Fig. 3. Fig. 3 is a schematic diagram for explaining an example of the power storage control device 24 according to an embodiment. Fig. 3 shows a power source 21, an AC / DC converter 22, a DC / DC converter 23, the power storage control device 24, a sterilization light source 113, an operation panel 15, and a capacitor 221.

[0029] The power supply 21 is connected to the AC / DC converter 22 and supplies power to the X-ray CT apparatus 1. The power supply 21 is, for example, an external power supply such as a commercial power supply. The AC / DC converter 22 is connected to the power supply 21 and converts the AC voltage supplied from the power supply 21 into a DC voltage. The AC / DC converter 22 has a capacitor 221. The AC / DC converter 22 stores the energy of the converted DC voltage in the capacitor 221.

[0030] Furthermore, AC / DC converter 22 is connected to power storage control device 24, and outputs the energy stored in capacitor 221 to DC / DC converter 23 in accordance with processing performed by power storage control device 24. AC / DC converter 22 is an example of a first power conversion unit. Capacitor 221 stores the energy of the DC voltage converted by AC / DC converter 22.

[0031] The DC / DC converter 23 steps down the DC voltage. For example, the DC / DC converter 23 converts the DC voltage stored in the capacitor 221 into stepped-down energy. Furthermore, the DC / DC converter 23 supplies the stepped-down energy to units such as the sterilization light source 113 and the operation panel 15 based on the processing performed by the power storage control device 24.

[0032] The power storage control device 24 is a control device that controls the DC / DC converter 23 to convert the residual energy stored in the gantry device 10 into energy obtained by stepping down the DC voltage, and to supply the converted energy to units such as the sterilization light source 113 and the operation panel 15. Here, the residual energy stored in the gantry device 10 is stored in a capacitor 221.

[0033] The power storage control device 24 has, as hardware resources, processing devices (processors) such as a CPU (Central Processing Unit) and an MPU (Micro Processing Unit), and storage devices (memories) such as a ROM (Read Only Memory) and a RAM (Random Access Memory).

[0034] The power storage control device 24 realizes the above functions by reading and executing the program stored in the storage device. Note that instead of storing the program in the storage device, the program may be directly embedded in the circuit of the power storage control device 24. In this case, the power storage control device 24 realizes the above functions by reading and executing the program embedded in the circuit.

[0035] 4 is a diagram showing an example of the functional configuration of the power storage control device 24 according to the embodiment. The processing circuit of the power storage control device 24 includes an acquisition function 241, a determination function 242, a display control function 243, and a power supply control function 244. Note that, although the power storage control device 24 will be described below as a single device that executes multiple functions, the multiple functions may be executed by separate devices.

[0036] The acquisition function 241 acquires energy information. Specifically, the acquisition function 241 acquires energy information related to the energy remaining in the capacitor 221. The acquisition function 241 is an example of an acquisition unit. For example, the acquisition function 241 acquires energy information related to the energy remaining in the capacitor 221 after a scan of the subject. The energy information includes, for example, information related to the capacity of the energy remaining in the capacitor 221.

[0037] The determination function 242 determines a unit to supply the residual energy remaining in the capacitor 221 based on the energy information. Specifically, the determination function 242 determines a unit to supply the residual energy remaining in the capacitor 221 based on the energy information acquired by the acquisition function 241. The determination function 242 is an example of a determination section. For example, after a scan of a subject, the determination function 242 determines a unit to supply the residual energy remaining in the capacitor 221 based on the energy information acquired by the acquisition function 241.

[0038] Here, a process for determining the unit that supplies the residual energy remaining in the capacitor 221 will be described. Here, the units are the operation panel 15 and the sterilization light source 113 shown in Fig. 3. For example, after scanning the subject, the gantry device 10 needs to supply energy to the sterilization light source 113 in order to sterilize viruses and the like adhering to the bed device.

[0039] If the capacity of the residual energy remaining in the capacitor 221 meets the energy capacity for operating the sterilization light source 113, the determination function 242 determines that the unit that supplies the residual energy remaining in the capacitor 221 is the sterilization light source 113. On the other hand, if the capacity of the residual energy remaining in the capacitor 221 does not meet the energy capacity for operating the sterilization light source 113, the determination function 242 determines that the unit that supplies the residual energy remaining in the capacitor 221 is the operation panel 15.

[0040] The display control function 243 performs control so that output information is displayed on the operation panel 15. Specifically, after a scan of the subject, the display control function 243 performs control so that output information that outputs a selection unit for selecting the unit determined by the determination function 242 is displayed on the operation panel 15. The display control function 243 is an example of a display control unit.

[0041] For example, if the unit determined by the determination function 242 is the sterilization light source 113, the display control function 243 controls the operation panel 15 to display output information that outputs a selection unit that selects the sterilization light source 113 as the unit that supplies the residual energy remaining in the capacitor 221 after scanning the subject.

[0042] Also, for example, if the unit determined by the determination function 242 is the operation panel 15, the display control function 243 controls the display of output information on the operation panel 15 to output a selection section that selects the operation panel 15 as the unit that supplies the residual energy remaining in the capacitor 221 after the subject is scanned.

[0043] Here, the output information output from the selection section for selecting the unit determined by the determination function 242 will be described with reference to Fig. 5. Fig. 5 is a schematic diagram showing an example of output information according to the embodiment. Fig. 5 shows output information 151 output to the operation panel 15. The output information 151 includes a "start sterilization" selection section 152 indicating the content of sterilizing viruses and the like attached to the bed device, and a "start charging" selection section 153 for starting charging of the operation panel 15. Note that the output information 151 is not limited to this.

[0044] For example, when the user presses the selection unit 152 displayed on the operation panel 15, the operation panel 15 receives operation information indicating that the selection unit 152 has been pressed. Then, the gantry device 10 transmits the operation information indicating that the selection unit 152 has been selected by the user to the power storage control device 24.

[0045] Furthermore, for example, when the user presses the selection unit 153 displayed on the operation panel 15, the operation panel 15 receives operation information indicating that the selection unit 153 has been pressed. Then, the gantry device 10 transmits the operation information indicating that the selection unit 153 has been selected by the user to the power storage control device 24.

[0046] 4, the power supply control function 244 controls the supply of residual energy remaining in the capacitor 221 to the units. For example, when the user presses the selection section of the output information 151, the power supply control function 244 controls the supply of residual energy remaining in the capacitor 221 to the units corresponding to the operation information selected by the user. The power supply control function 244 is an example of a power supply control section.

[0047] 5 is a flowchart showing an example of processing by the power storage control device 24 according to the embodiment. Note that this processing is started after a scan of the subject is performed.

[0048] The acquisition function 241 acquires energy information regarding the energy remaining in the capacitor 221 (step S51). Subsequently, the determination function 242 determines a unit that supplies the residual energy remaining in the capacitor 221 based on the energy information acquired by the acquisition function 241 (step S52).

[0049] After scanning the subject, the display control function 243 performs control to display output information 151 on the operation panel 15, which outputs a selection section for selecting the unit determined by the determination function 242 (step S53). When the user presses the selection section of the output information 151, the power supply control function 244 performs control to supply the residual energy remaining in the capacitor 221 to the unit (step S54). When this process ends, the process performed by the processing circuit of the power storage control device 24 ends.

[0050] As described above, according to the embodiment, the X-ray CT device 1 has a capacitor 221 and is equipped with a first power conversion unit that converts AC voltage into DC voltage, a first unit that is driven with a first power, and a second unit that is driven with a power lower than the first power, and after a scan of the subject, based on energy information regarding the energy remaining in the capacitor 221, determines a unit to supply the residual energy remaining in the capacitor 221, and supplies the residual energy to the unit.

[0051] As a result, for example, after the X-ray CT apparatus 1 scans a subject, residual energy remains in the capacitor 221. After the X-ray CT apparatus 1 is powered off, the residual energy is naturally discharged or consumed by a discharge resistor. After the X-ray CT apparatus 1 scans a subject, the X-ray CT apparatus 1 of this embodiment determines a unit to supply the residual energy remaining in the capacitor 221 based on energy information related to the energy remaining in the capacitor 221, and supplies the residual energy to the unit.

[0052] Therefore, the X-ray CT apparatus 1 can make more effective use of the residual energy than conventional apparatuses.

[0053] The above-described embodiment can be modified as needed by partially changing the configuration or functions of each device. Therefore, several modifications of the above-described embodiment will be described below as other embodiments. The following mainly focuses on differences from the above-described embodiment, and the same reference numerals will be used to designate parts that are common to the contents already described, and detailed description will be omitted. The other embodiments described below may be implemented individually or in combination as needed.

[0054] (First Modification) In the first variant, a form will be described in which the power storage control device 24 determines a unit to supply the residual energy remaining in the capacitor 221 after scanning the subject based on energy information and workflow information related to the workflow of scanning the subject.

[0055] The acquisition function 241 acquires workflow information related to the workflow of scanning a subject. Specifically, the acquisition function 241 acquires workflow information related to the workflow of scanning a subject from a storage circuit included in the X-ray CT apparatus 1. The workflow information is information that defines a series of procedures related to imaging. Specifically, the workflow information is information that defines the work content and work order to be performed in each procedure for the series of procedures related to imaging.

[0056] The acquisition function 241 is not limited to acquiring workflow information from a memory circuit provided in the X-ray CT device 1, but may also acquire workflow information by connecting to an information processing system within a medical institution, such as a Hospital Information System (HIS) or a Radiology Information System (RIS).

[0057] After a scan on the subject, the determination function 242 determines, based on the energy information and workflow information, a unit that supplies the residual energy remaining in the capacitor 221. Specifically, after a scan on the subject, the determination function 242 determines, based on the energy information and workflow information acquired by the acquisition function 241, a unit that supplies the residual energy remaining in the capacitor 221.

[0058] For example, when the capacity of the residual energy remaining in the capacitor 221 satisfies the capacity of the energy required to operate the sterilization light source 113 and the scan operation among the tasks included in the workflow information has been completed, the determination function 242 determines that the unit that supplies the residual energy remaining in the capacitor 221 is the sterilization light source 113. Furthermore, when the capacity of the residual energy remaining in the capacitor 221 does not satisfy the capacity of the energy required to operate the sterilization light source 113 and the scan operation among the tasks included in the workflow information has been completed, the determination function 242 determines that the unit that supplies the residual energy remaining in the capacitor 221 is the operation panel 15.

[0059] Furthermore, when the capacity of the residual energy remaining in the capacitor 221 satisfies the capacity of the energy for operating the sterilization light source 113 and the scanning task in the work content included in the workflow information has not yet been completed, the determination function 242 determines that the unit that supplies the residual energy remaining in the capacitor 221 is the operation panel 15. When the capacity of the residual energy remaining in the capacitor 221 does not satisfy the capacity of the energy for operating the sterilization light source 113 and the scanning task in the work content included in the workflow information has not yet been completed, the determination function 242 determines that the unit that supplies the residual energy remaining in the capacitor 221 is the operation panel 15.

[0060] 7 is a flowchart showing an example of processing by the power storage control device 24 according to the first modified example. Note that a description of processing that is the same as the processing described in the flowchart shown in FIG.

[0061] In step S55, the acquisition function 241 acquires workflow information related to the workflow of the scan of the subject (step S55). In step S56, the determination function 242 determines a unit to supply the residual energy remaining in the capacitor 221 based on the energy information acquired by the acquisition function 241 and the workflow information after the scan of the subject.

[0062] As a result, the X-ray CT apparatus 1 determines the unit to which the residual energy is to be supplied based on the energy information and the workflow information, and therefore can utilize the residual energy more effectively than before.

[0063] (Second Modification) For example, after the X-ray CT apparatus 1 supplies the residual energy remaining in the capacitor 221 to a unit selected by the user, there may be residual energy remaining in the capacitor 221 that can be supplied to other units. In this case, the X-ray CT apparatus 1 may supply the residual energy remaining in the capacitor 221 to units other than the unit selected by the user.

[0064] (Third Modification) For example, the X-ray CT apparatus 1 may control the capacitor 221 to store energy regenerated from the rotational energy of the gantry 10. Specifically, after a scan of the subject, the AC / DC converter 22 controls the capacitor 221 to store the energy regenerated from the rotational energy of the gantry 10 when the rotation of the gantry 10 is decelerated. Then, the capacitor 221 stores the energy regenerated from the rotational energy of the gantry 10 controlled by the AC / DC converter 22. In this way, the X-ray CT apparatus 1 can store the power to be supplied to the unit by storing the regenerated energy in the capacitor 221.

[0065] (Fourth Modification) The medical image diagnostic apparatus of the above-described embodiment has been described as an example of an X-ray CT apparatus 1. However, the medical image diagnostic apparatus is not limited to the X-ray CT apparatus 1, and may be applied to, for example, a general X-ray diagnostic apparatus, an X-ray angiography apparatus, an MRI (Magnetic Resonance Imaging) apparatus, a PET (Positron Emission Tomography) apparatus, or a CT-PET apparatus that combines an X-ray CT apparatus and a PET apparatus.

[0066] Furthermore, the term "processor" used in the description of the above-mentioned embodiments refers to circuits such as a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), an Application Specific Integrated Circuit (ASIC), a programmable logic device (e.g., a Simple Programmable Logic Device (SPLD), a Complex Programmable Logic Device (CPLD), and a Field Programmable Gate Array (FPGA)).

[0067] Instead of storing the program in memory, the program may be directly embedded in the circuit of the processor. In this case, the processor realizes its function by reading and executing the program embedded in the circuit. Furthermore, each processor in this embodiment is not limited to being configured as a single circuit, but may be configured as a single processor by combining multiple independent circuits to realize its function.

[0068] In addition, in the above-described embodiments and modifications, the components of each device shown in the drawings are functional concepts and do not necessarily have to be physically configured as shown. In other words, the specific form of distribution or integration of each device is not limited to that shown in the drawings, and all or part of the devices can be functionally or physically distributed or integrated in any unit depending on various loads, usage conditions, etc. Furthermore, all or any part of the processing functions performed by each device can be realized by a CPU and a program analyzed and executed by the CPU, or can be realized as hardware using wired logic.

[0069] Furthermore, among the processes described in the above-mentioned embodiments and modifications, all or part of the processes described as being performed automatically can be performed manually, or all or part of the processes described as being performed manually can be performed automatically using a known method.In addition, the information including the processing procedures, control procedures, specific names, various data, and parameters shown in the above documents and drawings can be changed as desired unless otherwise specified.

[0070] According to at least one of the embodiments described above, residual energy can be utilized more effectively than in the past.

[0071] Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are intended to be included within the scope and spirit of the invention, as well as within the scope of the inventions and their equivalents as defined in the claims. [Explanation of symbols]

[0072] 1... X-ray CT device, 10... stand device, 11... opening, 12... exterior cover, 13...first flare section, 14...second flare section, 15...operation panel, 16...operation button, 21...power supply, 22...AC / DC converter, 23...DC / DC converter, 24... power storage control device, 113... sterilization light source, 241... acquisition function, 242... determination function, 243...Display control function, 244...Power supply control function

Claims

1. a first power conversion unit having a capacitor and converting AC voltage into DC voltage; a first unit driven by a first power; a second unit driven by a power lower than the first power; a determination unit that determines a unit to supply the residual energy remaining in the capacitor based on energy information regarding the energy remaining in the capacitor after a scan of the subject; a power supply control unit that controls the supply of the residual energy to the unit; A medical image diagnostic device comprising:

2. A mounting device is provided, The first power conversion unit stores energy regenerated from rotational energy of the gantry device in the capacitor. The medical image diagnostic apparatus according to claim 1 .

3. a second power conversion unit that steps down the DC voltage; the second power conversion unit supplies the unit with energy obtained by lowering the voltage of the residual energy. The medical image diagnostic apparatus according to claim 1 .

4. the first unit is a light source that irradiates a sterilizable light toward a bed on which the subject is placed, the second unit is a display device included in a gantry device; The medical image diagnostic apparatus according to claim 1 .

5. the determination unit determines, after the scan, a unit to supply the energy remaining in the capacitor based on the energy information and workflow information related to a workflow of the scan of the subject. The medical image diagnostic apparatus according to any one of claims 1 to 4.

6. An X-ray computed tomography apparatus comprising: an X-ray tube that irradiates X-rays; and an X-ray detector that detects the X-rays irradiated by the X-ray tube, a first power conversion unit having a capacitor and converting AC voltage into DC voltage; a first unit driven by a first power; a second unit driven by a power lower than the first power; a determination unit that determines a unit to supply the residual energy remaining in the capacitor based on the energy remaining in the capacitor after a scan of the subject; a power supply control unit that controls the supply of the residual energy to the unit; An X-ray CT device comprising:

Images