Radiation imaging apparatus, radiation imaging system, and control method and program of radiation imaging apparatus

Abstract

To prevent a radiation imaging apparatus from getting into a situation in which the radiation imaging apparatus cannot be used due to battery replacement work, a battery abnormality, or the like.SOLUTION: A radiation imaging apparatus having an imaging unit for generating an image based on a radioactive ray includes: a plurality of batteries; control means for executing control to operate the radiation imaging apparatus using at least one battery of the plurality of batteries; and detection means for detecting a battery replacement operation or a battery abnormality. The control means executes changeover control for a battery to be used on the basis of a result of the detection by the detection means on a battery used for an operation of the radiation imaging apparatus.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a radiation imaging apparatus, a radiation imaging system, and a control method and program for a radiation imaging apparatus. [Background technology]

[0002] In recent years, portable radiographic imaging devices equipped with batteries have become widespread in medical radiographic imaging devices in order to accommodate a wide variety of imaging procedures. A lithium-ion battery or the like is used as the battery mounted in the portable radiographic imaging device. However, since the portable radiographic imaging device relies solely on the battery to provide the power required for operation, it becomes unable to operate when the battery runs out of charge or the like. Therefore, if imaging is performed despite a state that poses concerns about imaging operations, such as a lack of remaining battery power, problems arise in that the desired image cannot be obtained and the patient is exposed to unnecessary radiation.

[0003] In response to this, Patent Document 1 discloses a technique for mounting multiple batteries and switching between them depending on the number of times imaging is performed. Patent Document 2 discloses a technique for investigating the deterioration state of the battery from the remaining charge of the battery and the operating time of the radiation imaging device, and for displaying a warning if it is determined that a problem has occurred. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2009-198982 A [Patent Document 2] JP 2013-85809 A Summary of the Invention [Problem to be solved by the invention]

[0005] The method described in Patent Document 1 does not allow the user to switch the battery at a timing desired by the user, which may result in a mismatch between the battery status and the user's intended use of the radiation imaging device, making the radiation imaging device unusable. The method described in Patent Document 2 can detect status changes such as battery deterioration, but creates downtime during which the radiation imaging device cannot be used until the battery is replaced.

[0006] One aspect of the present disclosure aims to prevent a radiation imaging apparatus from falling into a situation where it cannot be used due to battery replacement work, an abnormality, or the like. [Means for solving the problem]

[0007] The radiation imaging device is a radiation imaging device having an imaging unit that generates images based on radiation, and includes a plurality of batteries, a control means that controls the radiation imaging device to operate using at least one of the plurality of batteries, and a detection means that detects the battery replacement operation or an abnormality in the battery, and the control means controls switching of the battery to be used based on the detection result by the detection means regarding the battery used in the operation of the radiation imaging device. Effect of the Invention

[0008] According to the present disclosure, it is possible to prevent a situation in which a radiation imaging apparatus cannot be used due to battery replacement work, an abnormality, or the like. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a diagram illustrating an example of the configuration of a radiation imaging system using a radiation imaging apparatus. [Diagram 2] FIG. 1 is a diagram illustrating an example of the appearance of a radiation imaging apparatus. [Diagram 3] FIG. 2 is a diagram illustrating an example of the configuration of a sensor unit of a radiation imaging apparatus. [Figure 4] 4 is a timing chart showing an example of driving a sensor unit of a radiation imaging apparatus. [Diagram 5] 5 is a flowchart showing an example of the operation of the radiation imaging apparatus according to the first embodiment. [Figure 6] 10 is a flowchart illustrating an example of a battery capacity determination process. [Figure 7] 10 is a flowchart showing an example of the operation of a radiation imaging apparatus according to the second embodiment. [Figure 8] FIG. 1 is a diagram illustrating an example of the configuration of a radiation imaging system using a radiation imaging apparatus. [Figure 9] 13 is a flowchart showing an example of the operation of a radiation imaging apparatus according to the third embodiment. [Figure 10] FIG. 1 is a diagram illustrating an example of the configuration of a radiation imaging system using a radiation imaging apparatus. [Figure 11] FIG. 1 is a diagram illustrating an example of the appearance of a radiation imaging apparatus. [Figure 12] 13 is a flowchart showing an example of the operation of a radiation imaging apparatus according to the fourth embodiment. [Figure 13] FIG. 1 is a diagram illustrating an example of the configuration of a radiation imaging system using a radiation imaging apparatus. [Figure 14] FIG. 1 is a diagram illustrating an example of the appearance of a radiation imaging apparatus. [Figure 15] 13 is a flowchart illustrating an example of the operation of a radiation imaging apparatus according to the fifth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following description and drawings, common components are assigned common symbols across multiple drawings. Therefore, the common components will be described with mutual reference to multiple drawings, and the description of the components assigned common symbols will be omitted as appropriate. In addition to α-rays, β-rays, γ-rays, etc., which are beams created by particles (including photons) emitted by radioactive decay, radiation also includes beams having the same or higher energy, such as X-rays, particle beams, and cosmic rays.

[0011] First Embodiment 1 is a block diagram showing an example of the arrangement of a radiation imaging system 100 according to the first embodiment. The radiation imaging system 100 includes a radiation generation device 101, a radiation control device 102, a control computer 103, a communication unit 104, and a radiation imaging device 105. The radiation generation device 101 irradiates radiation under the control of the radiation control device 102. The computer 103 controls the radiation control device 102.

[0012] The computer 103 communicates with the radiation imaging apparatus 105 via the communication unit 104, drives the radiation imaging apparatus 105, and acquires images. Wireless communication is preferably used for the communication between the communication unit 104 and the radiation imaging apparatus 105, and an access point or the like is preferably used for the communication unit 104, but a configuration in which communication is performed using a wired LAN is also possible. The communication unit 104 may be built into the computer 103.

[0013] The radiation imaging device 105 has a sensor unit 106, a control unit 107, a communication unit 108, a first battery 109, a second battery 110, a third battery 111, a switch unit 112, and a detection unit 113. The sensor unit 106 includes a two-dimensional detector that detects radiation. The control unit 107 controls the operation of the radiation imaging device 105. The switch unit 112 switches the battery that supplies power.

[0014] The sensor unit 106 is a sensor in which elements for detecting radiation are arranged in an XY matrix array, and detects radiation and outputs image information. The sensor unit 106 is an example of an imaging unit. The sensor unit 106 will be described in detail in the description of FIG. 3.

[0015] The control unit 107 controls the sensor unit 106 in a driving method requested by the computer 103. Furthermore, the control unit 107 controls the switch unit 112 based on the state of the battery to switch the battery that supplies power to each unit of the radiation imaging device 105. The communication unit 108 communicates with the computer 103 via the communication unit 104.

[0016] The first battery 109 is detachable and replaceable, and the second battery 110 and the third battery 111 are built into the radiation imaging device 105. The first battery 109, the second battery 110, and the third battery 111 each have a capacity capable of acquiring an image one or more times. The radiation imaging device 105 operates by power supply from one or more batteries selected by the control unit 107 among the first battery 109, the second battery 110, and the third battery 111. A lithium ion battery is preferably used as the battery, but different types of batteries may be used. The second battery 110 and the third battery 111 may be detachable. That is, each of the first battery 109, the second battery 110, and the third battery 111 may be detachable and replaceable.

[0017] The detection unit 113 detects an operation (replacement operation) for attaching or detaching a battery to or from the radiation imaging device 105, performed by a user or the like, and notifies the control unit 107. The detection unit 113 detects, for example, an operation for removing the first battery 109, and notifies the control unit 107. The structure of the attachment / detachment part for the first battery 109 will be described in detail in the description of Fig. 2. The notification unit 114 notifies a user, such as a technician, of the state of the radiation imaging device 105.

[0018] In the present embodiment, an example in which the battery is three is shown, but the battery may be two or more in any number. Also, an example in which the battery is provided inside the housing of the radiation imaging device 105 is shown, but some or all of the batteries may be provided outside the housing of the radiation imaging device 105, and power may be supplied to the radiation imaging device 105 via a cable or the like.

[0019] FIG. 2 is an external view of the radiation imaging device 105. The radiation imaging device 105 includes a battery holder 201 for storing a detachable first battery 109, and a battery cover 202 for fixing the battery so that it does not come off. The battery cover 202 includes a locking mechanism 203, and is fixed by fitting the locking mechanism 203 into the battery holder 201. The locking mechanism 203 can be operated between a locked state and an unlocked state by a locking operation unit 204. The locked state is an example of a first state, and the unlocked state is an example of a second state. In the example shown in FIG. 2, the battery cover 202 is shown to have a shape that covers the entire surfaces of the first battery 109 and the battery holder 201, but may also have a shape that covers parts of the first battery 109 and the battery holder 201. In addition, an example in which the locking mechanism 203 and the locking operation unit 204 are provided in the battery cover 202 has been shown, but the locking mechanism 203 and the locking operation unit 204 may also be provided in the battery holder 201.

[0020] For example, the battery holder 201 has a detection unit 113 that detects an operation (replacement operation) related to the attachment and detachment of the battery in a portion where the locking mechanism 203 is fitted. A switch or a contact sensor corresponding to the locking mechanism is preferably used as the detection unit 113. For example, when the locking mechanism 203 changes from a locked state to an unlocked state, the detection unit 113 detects this as a battery removal operation. The detection unit 113 may also detect an operation related to the attachment and detachment of the battery in response to the operation of the lock operation unit 204. The detection unit 113 may also detect an operation related to the attachment and detachment of the battery in response to the state of the battery cover 202, and may detect, for example, when the battery cover 202 is in an open state as a battery removal operation.

[0021] Here, an example of the flow of radiation imaging using the radiation imaging system 100 will be described. After the user starts the radiation imaging apparatus 105, the user operates the computer 103 to set the radiation imaging apparatus 105 in a state where imaging is possible. Next, the user operates the radiation control device 102 to set imaging conditions for irradiating radiation (tube voltage, tube current, irradiation time, etc.). After the above processing is completed, the user confirms that imaging preparations are complete and presses an exposure switch provided on the radiation control device 102 to cause radiation exposure. When irradiating radiation, the radiation control device 102 notifies the radiation imaging apparatus 105 of a signal indicating that radiation will be irradiated from now on via the computer 103 and the communication unit 104. In the configuration shown in FIG. 1, the radiation imaging apparatus 105 and the radiation control device 102 are connected via the computer 103 and the communication unit 104, but the connection is not limited to this form.

[0022] When the radiation imaging device 105 receives a signal to irradiate radiation, the radiation imaging device 105 checks whether preparation for radiation exposure is complete, and if there are no problems, returns permission for exposure to the radiation control device 102. In response to this, the radiation control device 102 causes the radiation generation device 101 to irradiate radiation.

[0023] When the radiation imaging device 105 detects the end of radiation irradiation by various methods, such as by receiving a notification from the radiation control device 102 or by referring to a preset time, the radiation imaging device 105 starts generating image information of a radiation image. The radiation imaging device 105 transmits the generated image information to the computer 103 via the communication unit 104. The image information transmitted to the computer 103 can be displayed as a radiation image, for example, on a display unit (not shown) connected to the computer 103. Note that a method is preferably used in which the image is generated from top to bottom or from left to right in accordance with the row and column order of the pixels read out from the sensor unit 106, and the generated image information is displayed in pixel order.

[0024] Fig. 3 is an equivalent circuit diagram of the sensor unit 106 in Fig. 1. For ease of explanation, Fig. 3 shows an FPD (flat panel detector) having 3 rows x 3 columns of pixels. However, an actual radiation imaging device 105 has more pixels, and for example, a 17-inch radiation imaging device 105 has about 2800 rows x about 2800 columns of pixels. The sensor unit 106 has a bias power supply 303, a buffer amplifier 309, an A / D converter 310, a detection unit 312, a readout circuit 313, and a drive circuit 314.

[0025] The detection unit 312 is a two-dimensional detector having a plurality of pixels arranged in a matrix. Each pixel has a conversion element 302 that converts radiation or light into an electric charge, and a switch element 301 that outputs an electric signal according to the electric charge. In this embodiment, the conversion element 302 is, for example, a photoelectric conversion element that converts irradiated light into an electric charge. The photoelectric conversion element is, for example, an MIS type photodiode that is arranged on an insulating substrate such as a glass substrate and is mainly made of amorphous silicon, but a PIN type photodiode may also be used. In this case, a scintillator provided opposite the detection unit 312 converts radiation into light.

[0026] As the conversion element 302, an indirect type conversion element having a wavelength converter on the radiation incident side of the above-mentioned photoelectric conversion element for converting radiation into light in a wavelength band detectable by the photoelectric conversion element, or a direct type conversion element that directly converts radiation into electric charges is preferably used.

[0027] As the switch element 301, a transistor having a control terminal and two main terminals is preferably used, and in this embodiment, a thin film transistor (TFT) is used. One electrode of the conversion element 302 is electrically connected to one of the two main terminals of the switch element 301, and the other electrode is electrically connected to a bias power supply 303 via a common bias wiring Bs. The control terminals of the multiple switch elements 301 in the row direction (for example, T11 to T13) are electrically connected in common to the drive wiring Vg1 of the first row. The drive circuit 314 provides the switch elements 301 in units of rows with a drive signal for controlling the conductive state of the switch elements 301 via the drive wirings Vg1 to Vg3. The other main terminals of the multiple switch elements 301 in the column direction (for example, T11 to T31) are electrically connected to the signal wiring Sig1 of the first column. While the switch elements 301 are in a conductive state, electrical signals corresponding to the charges of the conversion elements 302 in each column are output to the readout circuit 313 via the signal wirings Sig1 to Sig3. The signal wirings Sig1 to Sig3 arranged in the column direction transmit the electrical signals output from the multiple pixels in parallel to the readout circuit 313.

[0028] The readout circuit 313 is provided with amplifier circuits 306 for amplifying the electrical signals output in parallel from the detection unit 312, corresponding to each of the signal wirings Sig1 to Sig3. Each amplifier circuit 306 includes an integral amplifier 305 for amplifying the output electrical signal, a variable amplifier 304 for amplifying the electrical signal from the integral amplifier 305, a sample-and-hold circuit 307 for sampling and holding the amplified electrical signal, and a buffer amplifier 315.

[0029] The integral amplifier 305 of each column includes an operational amplifier that amplifies and outputs the electric signals of the signal wirings Sig1 to Sig3, an integral capacitance, and a reset switch. The integral amplifier 305 can change the amplification factor by changing the value of the integral capacitance. The electric signals of the signal wirings Sig1 to Sig3 are input to the inverting input terminal of the operational amplifier of each column, a reference voltage Vref is input from a reference power supply 311 to the non-inverting input terminal, and an amplified electric signal is output from the output terminal. An integral capacitance is also disposed between the inverting input terminal and the output terminal of the operational amplifier. A sample-and-hold circuit 307 is provided corresponding to each amplifier circuit 306, and includes a sampling switch and a sampling capacitance.

[0030] The readout circuit 313 also has a multiplexer 308 that sequentially outputs the electrical signals read out in parallel from each amplifier circuit 306 as a serial image signal. The buffer amplifier 309 performs impedance conversion on the image signal output by the multiplexer 308 and outputs it. The A / D converter 310 converts the image signal, which is an analog electrical signal output from the buffer amplifier 309, into digital image data. The control unit 107 shown in FIG. 1 transmits image data to the computer 103 via the communication units 104 and 108.

[0031] The power supply unit (not shown) includes a reference power supply 311 and a bias power supply 303 of the amplifier circuit 306 shown in Fig. 3. The reference power supply 311 supplies a reference voltage Vref to the non-inverting input terminal of each operational amplifier. The bias power supply 303 supplies a bias voltage Vs in common to the other electrode of each conversion element 302 via a bias line Bs.

[0032] The drive circuit 314 has a shift register. The drive circuit 314 outputs drive signals having a conductive voltage Vcom for turning the switch element 301 into a conductive state and a non-conductive voltage Vss for turning the switch element 301 into a non-conductive state to the drive wirings Vg1 to Vg3 in response to control signals D-CLK, OE, and DIO input from the control unit 107 shown in FIG. 1. In this way, the drive circuit 314 controls the conductive state and non-conductive state of the switch element 301 to drive the detection unit 312.

[0033] The control signal D-CLK is a shift clock for the shift register used as the driving circuit 314. The control signal DIO is a pulse for the shift register to transfer. The control signal OE is a signal for controlling the output terminal of the shift register.

[0034] In this way, the drive circuit 314 sets the required drive time and the scanning direction. The control unit 107 also controls the operation of each component of the readout circuit 313 by providing a control signal RC, a control signal SH, and a control signal CLK to the readout circuit 313. Here, the control signal RC controls the operation of the reset switch of the integral amplifier 305. The control signal SH controls the operation of the sample-and-hold circuit 307. The control signal CLK controls the operation of the multiplexer 308.

[0035] Fig. 4 is a timing chart showing an example of the drive timing of the sensor unit 106 in Fig. 3. The sensor unit 106 is in a standby state after power-on, and is brought into an image capturing-ready state by a user's operation. When the sensor unit 106 is in an image capturing-ready state, the drive wirings Vg1 to VgY repeatedly perform preparatory drive, that is, pre-reading, for turning on the switch elements 301 in order from the first row (first row) to the last row (Yth row) until radiation exposure is started. When the pre-reading reaches the last row, the sensor unit 106 returns to the first row and continues pre-reading.

[0036] When radiation exposure starts, the sensor unit 106 drives the switch elements 301 in all rows to be non-conductive, that is, repeats accumulation, via the drive wirings Vg1 to VgY. Furthermore, the sensor unit 106 repeats accumulation until radiation exposure ends.

[0037] When radiation exposure is completed, the sensor unit 106 turns on the switch elements 301 in order from the first row to the last row via the drive wirings Vg1 to VgY to read out the signals and perform AD conversion (analog-to-digital conversion), that is, performs main reading.

[0038] Each pixel of the sensor unit 106 generates a certain amount of signal even when no radiation is irradiated. This signal is called a dark current here. The dark current has different characteristics for each pixel, and the characteristics change due to the temperature and aging of the sensor unit 106. Therefore, in imaging, a method is preferably used in which the effect of the dark current on the image is removed by taking the difference between the signal of each pixel when exposed to radiation and the signal of each pixel when not exposed to radiation. That is, the radiation imaging device 105 separately obtains an image obtained by driving the sensor unit 106 after exposure to radiation and an image obtained by driving the sensor unit 106 without exposure (hereinafter referred to as a dark image), and performs subtraction processing between corresponding pixels of these images to obtain an image of the subject. As described above, in order to prevent the occurrence of removal residuals due to changes in the dark current characteristics themselves, it is desirable to obtain the radiation image and the dark image in close time, and a method of continuously imaging is preferably used.

[0039] Fig. 5 is a flowchart showing an example of the operation of the radiation imaging apparatus 105 according to the first embodiment. Fig. 5 shows an operation in which the control unit 107 of the radiation imaging apparatus 105 performs battery switching control based on detection information from the detection unit 113.

[0040] In step S501, the radiation imaging device 105 starts operation, and the switch unit 112 maintains a conductive state such that the first battery 109, which is to be used first among the first battery 109 to the third battery 111, is connected to the control unit 107. It is preferable that the order in which the batteries are used is determined in advance and stored in the control unit 107. In this embodiment, it is assumed that the order is set to the first battery 109, the second battery 110, and the third battery 111. The switch unit 112 may also be in a conductive state such that a plurality of batteries are used in combination to supply power.

[0041] In step S502, the detection unit 113 starts detecting a removal operation for the removable first battery 109. Here, the removal operation detected by the detection unit 113 is not an actual installation / removal operation (main operation) that changes the first battery 109 from an attached state to a removed state, but an operation (preliminary operation) for changing the first battery 109 to a removable state. For example, the removal operation corresponds to an operation that changes the lock mechanism 203 from a locked state to an unlocked state.

[0042] In step S503, detection unit 113 performs an operation of detecting a removal operation for first battery 109 at a predetermined interval, and control unit 107 determines whether or not the removal operation has been detected by detection unit 113. It is preferable that the predetermined interval is determined in advance and stored in control unit 107 to control detection unit 113. If control unit 107 determines that the removal operation has been detected by detection unit 113 (YES in step S503), the process proceeds to step S504. If control unit 107 determines that the removal operation has not been detected by detection unit 113 (NO in step S503), the process of step S503 is repeatedly executed.

[0043] In step S504, the control unit 107 determines whether or not the radiation imaging apparatus 105 is in an imaging-enabled state. If the control unit 107 determines that the radiation imaging apparatus 105 is in an imaging-enabled state (YES in step S504), the process proceeds to step S505. If the control unit 107 determines that the radiation imaging apparatus 105 is not in an imaging-enabled state (NO in step S504), the process proceeds to step S506. In this case, in step S506, the switch unit 112 switches the battery to be used (to supply power) from the first battery 109 to the second battery 110 or the third battery 111 based on the control of the control unit 107.

[0044] In step S505, the control unit 107 checks the capacity (remaining capacity) of the battery to be switched to, and determines whether or not the battery to be switched to has the capacity (remaining capacity) to perform one or more images. The battery capacity determination process in step S505 will be described in detail with reference to FIG. 6. If the control unit 107 determines that the battery to be switched to has the capacity (remaining capacity) to perform one or more images (YES in step S505), the process proceeds to step S506. In this case, in step S506, the switch unit 112 switches the battery to be used (to supply power) to the battery to be switched to determined in step S505, based on the control by the control unit 107. If the control unit 107 determines that the battery to be switched to does not have the capacity (remaining capacity) to perform one or more images (NO in step S505), the process proceeds to step S507.

[0045] In step S507, the radiation imaging apparatus 105 notifies the user that the battery to be switched to does not have enough capacity (remaining amount) to perform one or more imaging operations via the notification unit 114. Then, the process proceeds to step S508.

[0046] In step S508, the control unit 107 transitions the state of the radiation imaging apparatus 105 from the imaging-enabled state to the standby state, thereby reducing the power consumption of the radiation imaging apparatus 105. This allows the battery to be attached and detached without the power being turned off in the radiation imaging apparatus 105, even if the user continues to attach and detach the battery. This also prevents the user from performing imaging when the battery does not have enough capacity (remaining power) to perform imaging at least once, causing the battery to run out during imaging.

[0047] FIG. 6 is a flowchart showing the battery capacity determination process in step S505 of FIG. In step S601, the control unit 107 checks the capacity (remaining capacity) of the second battery 110, which is the next battery to be used. In step S602, the control unit 107 determines the capacity of the second battery 110, and determines whether the second battery 110 has a capacity (remaining amount) sufficient to perform one or more imaging operations. If the control unit 107 determines that the second battery 110 has a capacity (remaining amount) sufficient to perform one or more imaging operations (YES in step S602), the process proceeds to step S603, where the control unit 107 determines the second battery 110 as the switching destination battery. If the control unit 107 determines that the second battery 110 does not have a capacity (remaining amount) sufficient to perform one or more imaging operations (NO in step S602), the process proceeds to step S604.

[0048] In step S604, the control unit 107 checks the capacity (remaining capacity) of the third battery 111, which is the third battery to be used. In step S605, the control unit 107 determines the capacity of the third battery 111, and determines whether the third battery 111 has a capacity (remaining amount) sufficient to perform one or more imaging operations. If the control unit 107 determines that the third battery 111 has a capacity (remaining amount) sufficient to perform one or more imaging operations (YES in step S605), the process proceeds to step S607, where the control unit 107 determines the third battery 111 as the switching destination battery. If the control unit 107 determines that the third battery 111 does not have a capacity (remaining amount) sufficient to perform one or more imaging operations (NO in step S605), the process proceeds to step S607.

[0049] In step S607, the control unit 107 checks the total capacity (total remaining capacity) of the second battery 110 and the third battery 111. In step S608, the control unit 107 determines the total capacity (total remaining capacity) of the second battery 110 and the third battery 111, and determines whether or not there is enough capacity (remaining capacity) to perform one or more imaging operations. If the control unit 107 determines that the total capacity (total remaining capacity) of the second battery 110 and the third battery 111 is enough to perform one or more imaging operations (YES in step S608), the process proceeds to step S609. If the control unit 107 determines that the total capacity (total remaining capacity) of the second battery 110 and the third battery 111 is less than the capacity (remaining capacity) to perform one or more imaging operations (NO in step S608), the process proceeds to step S610.

[0050] In step S609, the control unit 107 determines that the switching destination batteries are the second battery 110 and the third battery 111. In this case, in step S506 in Fig. 5, the switch unit 112, under the control of the control unit 107, switches to a conductive state in which the second battery 110 and the third battery 111 are used in combination. In step S610, the control unit 107 determines that battery switching is not possible.

[0051] 6, the case where the second battery 110 and the third battery 111 are provided has been described, but a case where four or more batteries are provided is also conceivable. In that case, the confirmation of the total capacity performed in steps S607 and S608 may be performed for any combination of batteries. Also, the decision of the batteries to be used in combination in step S609 may be performed for any combination of batteries.

[0052] As described above, the detection unit 113 detects the removal operation of the removable first battery 109 as a battery replacement operation, and the control unit 107 controls switching of the battery to be used for the operation based on the detection result by the detection unit 113. This makes it possible to switch the battery to be used and perform the battery replacement operation without causing the radiation imaging device 105 to fall into a situation where it cannot be used.

[0053] Second Embodiment Next, a second embodiment will be described. Note that the explanation of the second embodiment that overlaps with the first embodiment will be omitted. In the first embodiment, the case where each of the first battery 109 to the third battery 111 has a capacity capable of performing one or more imaging operations has been described, but other methods are also possible. In the second embodiment, the second battery 110 and the third battery 111 have a capacity capable of maintaining the power supply of the radiation imaging device 105 for a predetermined time, and are used to maintain the power supply while the battery is being attached or detached, which is different from the first embodiment.

[0054] Battery switching control in a case where the control unit 107 uses the second battery 110 and the third battery 111 to maintain power supply during battery attachment / detachment will be described with reference to Fig. 7. Fig. 7 is a flowchart showing an example of the operation of the radiation imaging apparatus 105 according to the second embodiment.

[0055] In step S701, the radiation imaging device 105 starts operation, and the switch unit 112 maintains a conductive state such that the first battery 109, which is to be used first among the first battery 109 to the third battery 111, is connected to the control unit 107. It is preferable that the order in which the batteries are used is determined in advance and stored in the control unit 107. In this embodiment, it is assumed that the order is set to the first battery 109, the second battery 110, and the third battery 111. The switch unit 112 may also be in a conductive state such that a plurality of batteries are used in combination to supply power.

[0056] In step S702, the detection unit 113 starts detecting a removal operation for the removable first battery 109. As in the first embodiment described above, the removal operation here is an operation (preliminary operation) for making the first battery 109 in a state where it can be removed, and corresponds to, for example, an operation for changing the lock mechanism 203 from a locked state to an unlocked state.

[0057] In step S703, the detection unit 113 performs an operation of detecting a removal operation for the first battery 109 at a predetermined interval, and the control unit 107 determines whether or not the removal operation has been detected by the detection unit 113. It is preferable that the predetermined interval is determined in advance and stored in the control unit 107 to control the detection unit 113. If the control unit 107 determines that the removal operation has been detected by the detection unit 113 (YES in step S703), the process proceeds to step S704. If the control unit 107 determines that the removal operation has not been detected by the detection unit 113 (NO in step S703), the process of step S703 is repeatedly executed.

[0058] In step S704, the control unit 107 checks the capacity (remaining capacity) of the battery to be switched to, and determines whether or not the battery to be switched to has the capacity (remaining capacity) to maintain the power supply of the radiation imaging apparatus 105 for a predetermined time or more. The predetermined time may be any time, but is preferably a time required for battery replacement. In addition, it is preferable that the predetermined time is stored in the control unit 107 in advance. The battery capacity determination process in step S704 is similar to the process flow shown in FIG. 6 described above, but determines whether or not the battery has the capacity (remaining capacity) to maintain the power supply of the radiation imaging apparatus 105 for a predetermined time or more, rather than whether or not the battery has the capacity (remaining capacity) to perform one or more imaging operations. If the control unit 107 determines that the battery to be switched to has the capacity (remaining capacity) to maintain the power supply of the radiation imaging apparatus 105 for a predetermined time or more (YES in step S704), the process proceeds to step S705. If the control unit 107 determines that the battery to be switched to does not have the capacity (remaining power) to maintain the power supply for the radiation imaging apparatus 105 for a predetermined time or longer (NO in step S704), the process proceeds to step S706.

[0059] In step S705, under the control of the control unit 107, the switch unit 112 switches the battery to be used (to supply power) to the switch-to battery determined in step S704. In step S706, the radiation imaging apparatus 105 notifies the switching destination battery through the notification unit 114 that the battery does not have enough capacity (remaining amount) to maintain the power supply for a predetermined period of time or longer.

[0060] As described above, the detection unit 113 detects the removal operation of the removable first battery 109 as a battery replacement operation, and the control unit 107 controls switching of the battery to be used for the operation based on the detection result by the detection unit 113. As a result, similar to the first embodiment, the battery to be used can be switched and the battery replacement operation can be performed without causing the radiation imaging device 105 to fall into a state where it cannot be used.

[0061] Third embodiment Next, a third embodiment will be described. Note that explanations of the third embodiment that overlap with those of the first and second embodiments will be omitted. In the first and second embodiments, the case where the attachment / detachment of the battery is detected by a detector provided in the battery holder 201 has been described, but other methods are also possible. The third embodiment differs from the first and second embodiments in that attachment / detachment is detected based on battery information.

[0062] Fig. 8 is a block diagram showing an example of the configuration of a radiation imaging system 100 according to the third embodiment. The radiation imaging system 100 shown in Fig. 8 is provided with a detection unit 801 instead of the detection unit 113 of the radiation imaging system 100 shown in Fig. 1, and the detection unit 801 detects information about the first battery 109 and notifies the control unit 107. The control unit 107 detects removal of the first battery 109 based on the information about the first battery 109 detected by the detection unit 801, which is different from the first and second embodiments.

[0063] Fig. 9 is a flowchart showing an example of the operation of the radiation imaging apparatus 105 according to the third embodiment. Fig. 9 shows an operation in which the control unit 107 of the radiation imaging apparatus 105 performs battery switching control based on battery information detected by the detection unit 801.

[0064] In step S901, the radiation imaging device 105 starts operation, and the switch unit 112 maintains a conductive state such that at least two batteries among the first battery 109 to the third battery 111 are connected to the control unit 107. In this example, the switch unit 112 maintains a conductive state such that the first battery 109 to be used first and the second battery 110 to be used next are connected to the control unit 107. It is desirable that the order of use of the batteries is determined in advance and stored in the control unit 107. In this embodiment, it is assumed that the order is set to the first battery 109, the second battery 110, and the third battery 111.

[0065] In step S902, the detection unit 801 starts removal detection for the removable first battery 109.

[0066] In step S903, the detection unit 801 determines whether or not it is time to obtain information. If the detection unit 801 determines that it is time to obtain information (YES in step S903), the process proceeds to step S904. If the detection unit 801 determines that it is not time to obtain information (NO in step S903), the process of step S903 is repeatedly executed.

[0067] In step S904, the detection unit 801 acquires, as battery information, any of voltage information, a current signal, and a communication signal of the first battery 109 connected to the control unit 107. It is preferable that the timing for acquiring the battery information is determined in advance and stored in the control unit 107, and it is preferable that the battery information is acquired at predetermined time intervals, for example.

[0068] In step S905, the control unit 107 performs attachment / detachment determination for the first battery 109 based on the battery information acquired in step S904, and determines the attachment / detachment state of the battery (whether or not it has been removed). The determination is performed by a method of comparing the acquired battery voltage information or current information with a threshold value, or by confirming whether communication with the battery is possible using a communication signal. It is preferable that the threshold value when using the battery voltage information or current information is determined in advance based on specifications such as the discharge characteristics of the battery, the power consumption of the radiation imaging device 105, and the voltage value required for imaging operation, and is stored in the control unit 107. It is also preferable to set upper and lower limit values ​​of the threshold value. If the battery voltage information (e.g., voltage value) or current information (e.g., current value) is within the threshold value range, the control unit 107 determines that the first battery 109 is attached. If the battery voltage information or voltage information is outside the threshold value range, the control unit 107 determines that the first battery 109 is removed. The method of confirming whether communication with the battery is possible can be applied to a battery having a charge / discharge control and communication function, such as a BMU. When the control unit 107 can communicate with a control unit inside the battery such as a BMU, it determines that the first battery 109 is attached, and when it cannot communicate with the control unit inside the battery, it determines that the first battery 109 is removed.

[0069] In step S906, the control unit 107 determines whether or not the first battery 109 is in an unplugged state based on the result of the attachment / detachment determination in step S905. If the control unit 107 determines that the first battery 109 is in an unplugged state (YES in step S906), the process proceeds to step S907. On the other hand, if the control unit 107 determines that the first battery 109 is not in an unplugged state, that is, is in an attached state (NO in step S906), the process returns to step S903.

[0070] In step S907, the switch unit 112, under the control of the control unit 107, brings the second battery 110 or the second battery 110 and the third battery 111 into a conductive state such that they are connected to the control unit 107.

[0071] As described above, the battery replacement operation is detected based on the battery information of the removable first battery 109, and the control unit 107 performs control to switch the battery to be used for the operation based on the detection result. This makes it possible to switch the battery to be used and perform the battery replacement operation without causing a situation in which the radiation imaging device 105 cannot be used. Furthermore, even if it is not possible to perform attachment / detachment detection corresponding to the mechanism of the battery cover or battery holder described in the first and second embodiments, for example, when the battery is suddenly removed due to the radiation imaging device 105 being dropped, attachment / detachment detection is possible.

[0072] (Fourth embodiment) Next, a fourth embodiment will be described. Note that the explanation of the fourth embodiment that overlaps with the first to third embodiments will be omitted. In the first to third embodiments, an example has been described in which the radiation imaging device 105 detects whether the battery is attached or detached to switch the battery, but other methods are also possible. The fourth embodiment differs from the first to third embodiments in that the battery is switched upon detecting that the user has operated a battery switching notification unit.

[0073] Fig. 10 is a block diagram showing an example of the configuration of a radiation imaging system 100 according to the fourth embodiment. The radiation imaging system 100 shown in Fig. 10 has a switching notification unit 1001 for notifying the radiation imaging system 100 of Fig. 1 that a battery will be switched. The control unit 107 differs from the first to third embodiments in that it switches the battery based on notification information from the switching notification unit 1001.

[0074] 11 is an external view of a radiation imaging apparatus 105 according to the fourth embodiment. The radiation imaging apparatus 105 according to the fourth embodiment has a switching notification unit 1101. A switch or a contact sensor that can be operated by a user is preferably used as the switching notification unit 1101. Alternatively, the switching notification unit 1101 may be used in common with a power switch or the like, and the control unit 107 may distinguish operations based on the number of times the switch is pressed or the duration of the press. In the example shown in FIG. 11, the switching notification unit 1101 is disposed on a side surface of the radiation imaging apparatus 105, but may be disposed in any location, for example, near the battery holder 201.

[0075] An operation of the control unit 107 of the radiation imaging apparatus 105 detecting a battery switching notification and switching the battery will be described with reference to Fig. 12. Fig. 12 is a flowchart showing an example of the operation of the radiation imaging apparatus 105 according to the fourth embodiment.

[0076] In step S1201, the radiation imaging device 105 starts operation, and the switch unit 112 maintains a conductive state such that the first battery 109, which is to be used first among the first battery 109 to the third battery 111, is connected to the control unit 107. It is preferable that the order in which the batteries are used is determined in advance and stored in the control unit 107, but it may also be possible for the user to select the order by operating the switching notification unit 1001. In this embodiment, it is assumed that the order is set to the first battery 109, the second battery 110, and the third battery 111. Also, the switch unit 112 may be in a conductive state such that a plurality of batteries are used in combination to supply power.

[0077] In step S1202, the battery switching notification unit 1001 becomes capable of issuing a switching notification in response to a user's operation, and the control unit 107 starts detecting the switching notification by the switching notification unit 1001.

[0078] In step S1203, the control unit 107 performs a detection operation for a switching notification at a predetermined interval, and determines whether or not a switching notification by the switching notification unit 1001 is detected. It is desirable to determine the predetermined interval in advance and store it in the control unit 107. If the control unit 107 determines that a switching notification by the switching notification unit 1001 is detected (YES in step S1203), the process proceeds to step S1204. If the control unit 107 determines that a switching notification by the switching notification unit 1001 is not detected (NO in step S1203), the process of step S703 is repeatedly executed.

[0079] In step S1204, the control unit 107 checks the capacity (remaining amount) of the battery to be switched to, and determines whether the battery to be switched to has a predetermined capacity (remaining amount). The predetermined capacity (remaining amount) may be any value, but is preferably set to the time required for battery replacement in consideration of the usage status of the radiation imaging device 105. It is also preferable that information on the predetermined capacity (remaining amount) be stored in the control unit 107 in advance.

[0080] If control unit 107 determines that the switching destination battery has a predetermined capacity (remaining amount) (YES in step S1204), the process proceeds to step S1205, and switch unit 112 switches the battery under the control of control unit 107.

[0081] If the control unit 107 determines that the battery at the switching destination does not have the predetermined capacity (remaining amount) (NO in step S1204), the process proceeds to step S1206. In step S1206, the radiation imaging apparatus 105 notifies the switching destination battery from the notification unit 114 that the battery at the switching destination does not have the predetermined capacity (remaining amount).

[0082] This allows the user to replace or switch the battery at any time with a simple operation while maintaining the power supply of the radiation imaging apparatus, without causing the radiation imaging apparatus 105 to become unusable.

[0083] Fifth embodiment Next, a fifth embodiment will be described. Note that the explanation of the fifth embodiment overlaps with the first to fourth embodiments, and will be omitted. In the first to fourth embodiments, an example of switching the battery based on the user's operation or the like has been described, but other methods are also possible. The fifth embodiment differs from the first to fourth embodiments in that the battery is switched by detecting a factor such as a foreign object that causes a malfunction in the battery.

[0084] Fig. 13 is a block diagram showing an example of the configuration of a radiation imaging system 100 according to the fifth embodiment. The radiation imaging system 100 shown in Fig. 13 has a foreign object detection unit 1301 instead of the detection unit 113 of the radiation imaging system 100 in Fig. 1. The control unit 107 differs from the first to fourth embodiments in that it switches the battery based on detection information from the foreign object detection unit 1301.

[0085] FIG. 14 is an external view of a radiation imaging apparatus 105 according to a fifth embodiment. The radiation imaging apparatus 105 according to the fifth embodiment has a foreign object detection unit 1401 in a battery holder 201. A capacitance sensor or the like is preferably used for the foreign object detection unit 1401 in order to detect whether a conductive foreign object that affects the function of the battery or the connection with the radiation imaging apparatus has entered. In addition, a sensor using an electric board in which two wires arranged at a certain interval on an electric board are partially exposed and a short circuit between the two wires due to a conductive foreign object or the like is detected can also be considered as the foreign object detection unit 1401. In the example shown in FIG. 14, the foreign object detection unit 1401 is arranged on the bottom surface of the battery holder 201, but it may be arranged on the side surface of the battery holder 201, for example, or a plurality of foreign object detection units may be combined.

[0086] 15 is a flowchart showing an example of the operation of the radiation imaging apparatus 105 according to the fifth embodiment. In FIG. 15, the control unit 107 of the radiation imaging apparatus 105 switches the battery based on the foreign object detection information of the foreign object detection unit 1301.

[0087] In step S1501, the radiation imaging device 105 starts operation, and the switch unit 112 maintains a conductive state such that the first battery 109, which is to be used first among the first battery 109 to the third battery 111, is connected to the control unit 107. It is preferable that the order in which the batteries are used is determined in advance and stored in the control unit 107. In this embodiment, it is assumed that the order is set to the first battery 109, the second battery 110, and the third battery 111. The switch unit 112 may also be in a conductive state such that a plurality of batteries are used in combination to supply power.

[0088] In step S1502, the foreign object detector 1301 starts detecting a foreign object. In step S1503, the foreign object detection unit 1301 determines whether or not it is time to obtain information. If the foreign object detection unit 1301 determines that it is time to obtain information (YES in step S1503), the process proceeds to step S1504. If the foreign object detection unit 1301 determines that it is not time to obtain information (NO in step S1503), the process of step S1503 is repeatedly executed.

[0089] In step S1504, the foreign object detection unit 1301 acquires foreign object detection information. The timing for acquiring the foreign object detection information is preferably determined in advance and stored in the control unit 107, and is preferably acquired at predetermined time intervals, for example.

[0090] In step S1505, the control unit 107 determines the presence or absence of a foreign object based on the foreign object detection information acquired in step S1504. In step S1506, control unit 107 determines whether or not a foreign object is present based on the result of the foreign object determination in step S1505. If control unit 107 determines that a foreign object is present (YES in step S1506), the process proceeds to step S1507. On the other hand, if control unit 107 determines that no foreign object is present (NO in step S1506), the process returns to step S1503.

[0091] In step S1507, switch unit 112 switches the battery based on the control by control unit 107. In this example, switch unit 112 disconnects first battery 109 from first battery 109 to third battery 111, and switches to a conductive state such that second battery 110, which is used second, is connected to control unit 107. Note that the battery to be switched may be in a conductive state such that second battery 110 and third battery 111 are used in combination. Also, notification unit 114 notifies that battery switching has been performed due to the intrusion of a foreign object. Note that first battery 109 may be disabled until a foreign object is no longer detected, or may be disabled until a service person or the like performs maintenance.

[0092] As a result, even if there is a possibility that the battery may malfunction, the battery to be used can be switched without causing a situation in which the radiation imaging apparatus 105 cannot be used.

[0093] (Other embodiments) The present disclosure can also be realized by a process in which a program for implementing one or more of the functions of the above-described embodiments is supplied to a system or device via a network or a storage medium, and one or more processors in a computer of the system or device read and execute the program. It can also be realized by a circuit (e.g., ASIC) for implementing one or more of the functions.

[0094] It should be noted that the above-mentioned embodiments are merely examples of the embodiment of the present disclosure, and the technical scope of the present disclosure should not be interpreted as being limited by these. That is, the present disclosure can be implemented in various forms without departing from its technical idea or main features. In addition, combinations that can be easily imagined from the first to fifth embodiments are also included in the scope of the present disclosure.

[0095] The disclosure of the present embodiment includes the following configurations, methods, etc. (Configuration 1) A radiation imaging device having an imaging unit that generates an image based on radiation, Multiple batteries and a control unit that controls the radiation imaging device to operate using at least one of the plurality of batteries; a detection means for detecting an exchange operation of the battery or an abnormality of the battery, The radiation imaging apparatus, wherein the control means performs switching control of the battery to be used based on a detection result by the detection means regarding the battery used in the operation of the radiation imaging apparatus. (Configuration 2) the plurality of batteries includes a first battery that is detachable from a housing in which the imaging unit is provided, The detection means detects a replacement operation for the first battery attached to the housing, The radiation imaging device according to configuration 1, characterized in that, when the detection means detects an exchange operation for the first battery, the control means switches the battery to be used from the first battery to another battery. (Configuration 3) 3. The radiation imaging apparatus according to claim 2, wherein the detection means detects a battery replacement operation by a removal operation for removing the first battery from the housing. (Configuration 4) a mechanism for switching between a first state in which the first battery cannot be removed from the housing and a second state in which the first battery can be removed from the housing; 4. The radiation imaging apparatus according to configuration 3, wherein the detection means detects an operation on the mechanism. (Configuration 5) 5. The radiation imaging apparatus according to any one of configurations 2 to 4, wherein the detection means detects an operation of replacing the battery based on battery information relating to the first battery. (Configuration 6) 6. The radiation imaging apparatus according to configuration 5, wherein the battery information includes voltage information or current information of the first battery. (Configuration 7) 7. The radiation imaging apparatus according to configuration 6, wherein when the voltage information or current information of the first battery is outside a threshold range, the battery to be used is switched from the first battery to another battery. (Configuration 8) 8. The radiation imaging apparatus according to any one of configurations 5 to 7, wherein the battery information includes a communication signal of the first battery. (Configuration 9) a switching notification means for notifying a user of switching of the battery used for the operation of the radiation imaging apparatus; 9. The radiation imaging apparatus according to any one of configurations 1 to 8, wherein the detection means detects the battery replacement operation by the switching notification means. (Configuration 10) the switching notification means is a switch or a contact sensor, 10. The radiation imaging apparatus according to claim 9, wherein the detection means detects pressing of the switch or contact with the contact sensor. (Configuration 11) 2. The radiation imaging apparatus according to claim 1, wherein the detection means is a sensor that detects a foreign object that affects the battery. (Configuration 12) The radiation imaging device according to any one of configurations 1 to 11, characterized in that the control means transitions the radiation imaging device from an imaging capable state to a standby state when the remaining charge of the battery at the time of switching is less than a predetermined capacity. (Configuration 13) 13. The radiation imaging apparatus according to any one of configurations 1 to 12, further comprising a notification unit that notifies the user when the remaining capacity of the battery to be switched is less than a predetermined capacity. (System 1) A radiation imaging device according to any one of configurations 1 to 13, and a radiation generating device that irradiates radiation. (Method 1) 1. A method for controlling a radiation imaging apparatus having an imaging unit that generates an image based on radiation and a plurality of batteries, comprising: a control step of controlling the radiation imaging device to operate using at least one of the plurality of batteries; a detection step of detecting an operation of replacing the battery or an abnormality in the battery, A control method for a radiation imaging apparatus, comprising: controlling, in the control step, switching of the battery to be used based on a detection result in the detection step regarding the battery used in the operation of the radiation imaging apparatus. (Program 1) A computer of a radiation imaging apparatus having an imaging unit that generates an image based on radiation and a plurality of batteries, a control step of controlling the radiation imaging device to operate using at least one of the plurality of batteries; a detection step of detecting an abnormality in the battery or a replacement operation of the battery; a program for causing, in the control step, control of switching the battery to be used based on a detection result in the detection step regarding the battery being used for the operation of the radiation imaging apparatus; [Explanation of symbols]

[0096] 101: Radiation generating device 102: Radiation control device 103: Computer 104: Communication unit 105: Radiation imaging device 106: Sensor unit 107: Control unit 108: Communication unit 109: First battery 110: Second battery 111: Third battery 112: Switch unit 113: Detection unit 114: Notification unit

Claims

1. A radiation imaging device having an imaging unit that generates an image based on radiation, Multiple batteries and a control unit that controls the radiation imaging device to operate using at least one of the plurality of batteries; a detection means for detecting an exchange operation of the battery or an abnormality of the battery, The radiation imaging apparatus, wherein the control means performs switching control of the battery to be used based on a detection result by the detection means regarding the battery used in the operation of the radiation imaging apparatus.

2. the plurality of batteries includes a first battery that is detachable from a housing in which the imaging unit is provided, The detection means detects a replacement operation for the first battery attached to the housing, 2. The radiation imaging apparatus according to claim 1, wherein the control means switches the battery to be used from the first battery to another battery when the detection means detects an exchange operation for the first battery.

3. 3. The radiation imaging apparatus according to claim 2, wherein the detection means detects the battery replacement operation by a removal operation for removing the first battery from the housing.

4. a mechanism for switching between a first state in which the first battery cannot be removed from the housing and a second state in which the first battery can be removed from the housing; 4. The radiation imaging apparatus according to claim 3, wherein the detection means detects an operation on the mechanism.

5. 3. The radiation imaging apparatus according to claim 2, wherein the detection means detects the battery replacement operation based on battery information relating to the first battery.

6. The radiation imaging apparatus according to claim 5 , wherein the battery information includes voltage information or current information of the first battery.

7. 7. The radiation imaging apparatus according to claim 6, wherein when the voltage information or current information of the first battery is outside a threshold range, the battery to be used is switched from the first battery to another battery.

8. The radiation imaging apparatus according to claim 5 , wherein the battery information includes a communication signal of the first battery.

9. a switching notification means for notifying a user of switching of the battery used for the operation of the radiation imaging apparatus; 2. The radiation imaging apparatus according to claim 1, wherein the detection means detects the battery replacement operation by the switching notification means.

10. the switching notification means is a switch or a contact sensor, 10. The radiation imaging apparatus according to claim 9, wherein the detection means detects pressing of the switch or contact with the contact sensor.

11. 2. The radiation imaging apparatus according to claim 1, wherein the detection means is a sensor that detects a foreign object that affects the battery.

12. 2. The radiation imaging apparatus according to claim 1, wherein the control means transitions the radiation imaging apparatus from the imaging-enabled state to a standby state when the remaining charge of the battery at the time of switching is less than a predetermined capacity.

13. 2. The radiation imaging apparatus according to claim 1, further comprising a notification unit that notifies the user when the remaining capacity of the battery to be switched is less than a predetermined capacity.

14. A radiation imaging apparatus according to any one of claims 1 to 13, and a radiation generating device that irradiates radiation.

15. 1. A method for controlling a radiation imaging apparatus having an imaging unit that generates an image based on radiation and a plurality of batteries, comprising: a control step of controlling the radiation imaging device to operate using at least one of the plurality of batteries; a detection step of detecting an operation of replacing the battery or an abnormality in the battery, A control method for a radiation imaging apparatus, wherein in the control step, switching control of the battery to be used is performed based on a detection result in the detection step regarding the battery used in the operation of the radiation imaging apparatus.

16. A computer of a radiation imaging apparatus having an imaging unit that generates an image based on radiation and a plurality of batteries, a control step of controlling the radiation imaging device to operate using at least one of the plurality of batteries; a detection step of detecting an abnormality in the battery or a replacement operation of the battery; a program for causing, in the control step, control of switching the battery to be used based on a detection result in the detection step regarding the battery being used for the operation of the radiation imaging apparatus;

Images