JP2016043153A - Portable radiographic imaging apparatus and radiographic imaging system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable radiographic imaging apparatus capable of being placed appropriately in a photographable state when a radiology technician, etc. are going to take a photograph while exactly suppressing power consumption.SOLUTION: A portable radiographic imaging apparatus 1 comprises: a power mode control unit 42 for switching the power consumption mode of the apparatus between a photographable mode and a power saving mode; and a prediction control unit 40 for instructing the power mode control unit 42 to switch the power consumption mode. The prediction control unit 40 has relations T1 in which photographing conditions N is associated with times Δt required to take from occurrence of predetermined events concerning the apparatus or photograph taking until switching of the power consumption mode. When a predetermined event occurs, the prediction control unit 40 determines, according to the relation T1, the time Δt associated with the photographing condition N of the photography to be performed from now on. When the time Δt has elapsed since the occurrence of the predetermined event, the prediction control unit 40 instructs the power mode control unit 42 to switch the power consumption mode from the power saving mode to the photographable mode.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a portable radiographic imaging device and a radiographic imaging system.

  As a radiographic imaging apparatus, an apparatus using an FPD (Flat Panel Detector) is known. Conventionally, the radiographic imaging apparatus is configured as a so-called dedicated machine integrally formed with a support base. Has been developed and put to practical use in a portable (also referred to as a cassette type) radiographic imaging device that can be carried in a housing. In many cases, portable radiographic imaging apparatuses have a built-in battery.

  In this case, if the battery power is consumed wastefully, the number of shootings that can be performed with one charge is reduced. And it becomes necessary to charge the radiographic imaging apparatus frequently, so that the work efficiency of radiographing is reduced, and the radiographer who is a user must frequently charge between radiographing, so the radiographic imaging apparatus It feels bad for us.

  Therefore, in order not to waste power consumption, for example, when shooting is not performed for a certain period of time, the power consumption mode is automatically set to a power saving mode with low power consumption (also referred to as a sleep mode). Various radiographic imaging devices configured to be switched have been developed (see, for example, Patent Documents 1 to 4).

JP 2010-46315 A JP 2012-148046 A JP 2011-200335 A JP 2011-130878 A

  By the way, in the radiographic image capturing apparatus described in each of the above patent documents, the power consumption mode of the apparatus is an image capturing mode capable of performing at least imaging, and imaging is performed although the power consumption is less than the image capturing possible mode. It is configured to switch between power saving modes that cannot be performed. Then, since the power consumption mode is switched to the power saving mode at the timing when imaging is not performed, it is possible to surely prevent the battery of the radiographic imaging apparatus from being wasted and to suppress the consumption of the battery.

  However, switching the power consumption mode from the power saving mode to the radiographable mode does not mean that the radiographic imaging device can be used immediately for imaging, and switching to the radiographable mode usually activates various functional units. Therefore, it takes a predetermined time until the radiographic image capturing apparatus can actually be used for imaging after switching to the imaging enable mode.

  Therefore, even if a radiographer wants to irradiate radiation from a radiation generator, he or she may have to wait until the radiographic imaging device is ready. There is a possibility that the photographing device may feel unusable.

  The present invention has been made in view of the above-described problems, and is capable of accurately capturing an image when a radiographer or the like performs imaging while appropriately suppressing power consumption. It aims at providing a portable radiographic imaging device and a radiographic imaging system.

In order to solve the above problem, the portable radiographic imaging device of the present invention is:
In a portable radiographic imaging device comprising a plurality of radiation detection elements arranged two-dimensionally,
The power consumption mode of the apparatus is switched between at least two modes: a shootable mode in which shooting can be performed and a power saving mode in which the amount of power consumption is lower than that in the shootable mode but cannot be shot. A mode control unit;
A prediction control unit that instructs the power mode control unit to switch the power consumption mode;
With
Built-in battery for supplying power to each functional unit including the power mode control unit and the prediction control unit,
The prediction control unit
A relationship in which shooting conditions are associated with a period from when a predetermined event related to the device or shooting occurs to when the power consumption mode is switched;
When the predetermined event occurs, according to the relationship, the period corresponding to the shooting condition of shooting to be performed from now is determined, and when the period elapses after the predetermined event occurs, the power mode The control unit is instructed to switch the power consumption mode from the power saving mode to the photographing enable mode.

Moreover, the radiographic imaging system of the present invention is
A plurality of radiation detection elements arranged two-dimensionally;
A power mode control unit that switches the power consumption mode of the apparatus between at least a shootable mode in which shooting can be performed and a power saving mode in which the amount of power consumption is lower than that of the shootable mode but cannot be shot. When,
A battery for supplying power to each functional unit including the power mode control unit;
A portable radiographic imaging device comprising:
A control device including a prediction control unit that instructs the power mode control unit of the portable radiographic imaging device to switch the power consumption mode;
With
The prediction control unit of the control device includes:
A relationship in which shooting conditions are associated with a period from when a predetermined event related to the device or shooting occurs to when the power consumption mode is switched;
When the predetermined event occurs, according to the relationship, the period corresponding to the shooting condition of shooting to be performed from now is determined, and when the period elapses after the predetermined event occurs, the portable type A switching signal is transmitted to the radiographic imaging apparatus, and the power mode control unit of the portable radiographic imaging apparatus is instructed to switch the power consumption mode from the power saving mode to the imaging enable mode. To do.

  According to the portable radiographic image capturing apparatus and the radiographic image capturing system of the system as in the present invention, when the radiographer or the like performs imaging while accurately suppressing the power consumption of the portable radiographic image capturing apparatus. It is possible to configure the camera so that it can be accurately photographed.

It is a perspective view which shows the external appearance of the portable radiographic imaging apparatus which concerns on this embodiment. It is a block diagram showing the equivalent circuit of a portable radiographic imaging apparatus. It is a figure which shows the structural example of the radiographic imaging system constructed | assembled in the imaging | photography room etc. (A) It is a figure showing the exposure switch of a radiation generator, and is a figure showing the state which pressed the button (B) half and the state which pressed the (C) button fully. It is a figure showing the structural example of the radiographic imaging system constructed | assembled on the round-trip vehicle, and the portable terminal which an operator carries. It is a block diagram showing the component of the structural example 1 regarding the suppression of power consumption among the structures of a radiographic imaging apparatus. It is a figure showing the example of the table T1 used by the structural example 1. FIG. It is a figure showing the example of imaging | photography order information. It is a block diagram showing the structural part of the structural example 2 in connection with suppression of power consumption among the structures of a radiographic imaging apparatus. It is a figure showing the example of the table T2 used by the structural example 2. FIG. It is a block diagram showing the structural part of the structural example 3 in connection with suppression of electric power consumption among the structures of a radiographic imaging apparatus. It is a figure showing the example of a structure of the storage area provided in a log | history management part. It is a figure explaining threshold value (DELTA) th1, (DELTA) th2 etc. which are provided in period (DELTA) t. It is a block diagram showing the structure of the structural example 5 regarding suppression of the power consumption of a radiographic imaging apparatus.

  Embodiments of a portable radiographic imaging device and a radiographic imaging system according to the present invention will be described below with reference to the drawings.

  Hereinafter, the portable radiographic imaging device is simply referred to as a radiographic imaging device. In the following, a so-called indirect radiographic imaging apparatus that includes a scintillator or the like as a radiographic imaging apparatus, converts the emitted radiation into electromagnetic waves of other wavelengths such as visible light, and irradiates the radiation detection element will be described. However, the present invention can also be applied to a so-called direct type radiographic imaging apparatus in which radiation is directly detected by a radiation detection element without using a scintillator or the like.

[Radiation imaging equipment]
FIG. 1 is a perspective view showing an appearance of the radiographic image capturing apparatus according to the present embodiment. In the present embodiment, the radiographic image capturing apparatus 1 is configured such that a later-described radiation detection element 7 and the like are housed in a housing 2, and a power switch 25 and a changeover switch 26 are provided on one side surface of the housing 2. A connector 27, an indicator 28, etc. are arranged.

  Although not shown, in the present embodiment, an antenna 29 (see FIG. 2 to be described later) for performing wireless communication with the outside is provided on, for example, the opposite side surface of the housing 2. The radiographic imaging apparatus 1 uses the antenna 29 when communicating with the outside in a wireless manner, and communicates by connecting a cable (not shown) to the connector 27 when communicating with the outside in a wired manner. It has become.

  FIG. 2 is a block diagram showing an equivalent circuit of the portable radiographic image capturing apparatus. As shown in FIG. 2, in the radiographic imaging apparatus 1, a plurality of radiation detection elements 7 are arranged in a two-dimensional shape (matrix shape) on a sensor substrate (not shown). Each radiation detection element 7 is irradiated from a radiation source 52 (see FIGS. 3 and 5) of a radiation generation device 55 described later, and generates charges according to the amount of radiation that has passed through a subject (not shown). . A bias line 9 is connected to each radiation detection element 7, and the bias line 9 is connected to a connection 10. The connection 10 is connected to a bias power supply 14 so that a reverse bias voltage is applied from the bias power supply 14 to each radiation detection element 7 via the bias line 9 and the like.

  Each radiation detection element 7 is connected to a thin film transistor (hereinafter referred to as TFT) 8 as a switching element, and the TFT 8 is connected to the signal line 6. Further, in the scanning driving means 15, an on voltage and an off voltage are supplied from the power supply circuit 15a to the gate driver 15b via the wiring 15c, and the lines L1 to Lx of the scanning line 5 are supplied to the gate driver 15b. The applied voltage is switched between an on voltage and an off voltage. Then, each TFT 8 is turned on when an on-voltage is applied via the scanning line 5, discharges the charge accumulated in the radiation detection element 7 to the signal line 6, and also passes through the scanning line 5. When the off-voltage is applied, the state is turned off, and the conduction between the radiation detection element 7 and the signal line 6 is cut off.

  A plurality of readout circuits 17 are provided in the readout IC 16, and the signal line 6 is connected to each readout circuit 17. When charge is released from the radiation detection element 7 during the reading process of the image data D, the charge flows into the reading circuit 17 via the signal line 6, and the amplification circuit 18 corresponds to the amount of the charged charge. A voltage value is output.

  Then, the correlated double sampling circuit (described as “CDS” in FIG. 2) 19 reads out the voltage value output from the amplifier circuit 18 as analog image data D and outputs it to the downstream side. The output image data D is sequentially transmitted to the A / D converter 20 via the analog multiplexer 21, and is sequentially converted into digital image data D by the A / D converter 20, and is output to the storage means 23. Are stored sequentially.

  The control means 22 is a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), an input / output interface, etc., not shown, connected to the bus, an FPGA (Field Programmable Gate Array), or the like. It is configured. It may be configured by a dedicated control circuit.

  The control means 22 is connected to a storage means 23 composed of SRAM (Static RAM), SDRAM (Synchronous DRAM) or the like, and via an antenna 29 or a connector 27, externally, wireless or wired. A communication unit 30 for performing communication is connected. Further, a battery 24 that supplies necessary power to each functional unit such as the scanning drive unit 15, the readout circuit 17, the storage unit 23, and the bias power supply 14 is connected to the control unit 22.

  In the present embodiment, as will be described later, the control unit 22 supplies power to at least the functional units including the scanning drive unit 15 and the readout circuit 17 in the power consumption mode of the radiographic image capturing apparatus 1 to perform imaging. It is possible to switch between a shootable mode that can perform shooting and a power saving mode that consumes less power than the shootable mode but cannot shoot.

  In the present embodiment, in the power saving mode, the application of the reverse bias voltage from the bias power source 14 to each radiation detection element 7 is stopped, the power supply to the readout circuit 17 and the scanning from the gate driver 15b are performed. Application of voltage to the line 5 is stopped. For this reason, even if the radiation image capturing apparatus 1 is irradiated with radiation, the image data D cannot be read out from each radiation detection element 7 and cannot be captured. Further, a configuration for suppressing power consumption in the radiographic image capturing apparatus 1 will be described after the radiographic image capturing system is described.

[Radiation imaging system]
A configuration example of the radiation image capturing system 50 according to the present embodiment will be described. FIG. 3 is a diagram illustrating a configuration example of the radiation image capturing system 50 according to the present embodiment. In FIG. 3, the case where the radiographic imaging system 50 is constructed in the imaging room R1 is shown. A bucky device 51 is installed in the radiographing room R1, and the bucky device 51 can load the radiographic imaging device 1 in the cassette holder 51a. FIG. 3 shows a case where a bucky device 51A for standing position shooting and a bucky device 51B for standing position shooting are installed as the bucky device 51, but only one of the bucky devices 51 is provided. It may be. Further, as shown in FIG. 3, at least one radiation source 52A of the radiation generator 55 that irradiates the radiation image capturing apparatus 1 loaded in the Bucky apparatus 51 through the subject is provided in the imaging room R1. ing.

  Further, in the photographing room R1, a repeater 54 having an access point 53 is provided for relaying communication between each device in the photographing room R1 and each device outside the photographing room R1, and the like. . The repeater 54 is connected to the radiation generator 55 and the console 58, and LAN (Local Area Network) communication is transmitted to the repeater 54 from the radiation imaging apparatus 1, the console 58, and the like to the radiation generator 55. A converter (not shown) that converts a signal for use into a signal for use in the radiation generator 55 and the reverse conversion is incorporated. In addition, the radiation generation device 55 performs various controls such as setting a tube current and an irradiation time for the radiation source 52 so that an appropriate dose of radiation is emitted from the radiation source 52. .

  In the present embodiment, the front room (also called an operation room or the like) R2 is provided with an operation console 57 of the radiation generating device 55. The operation panel 57 is operated by an operator such as a radiation engineer to perform radiation. An exposure switch 56 is provided for instructing the generator 55 to start radiation irradiation. As shown in FIG. 4A, the exposure switch 56 is provided with a button 56a.

  Then, as shown in FIG. 4B, when an operator such as a radiologist performs the first-stage operation (that is, so-called half-press operation) on the button 56a of the exposure switch 56, the radiation generator 55 is The radiation source 52 is activated. Then, as shown in FIG. 4C, when the operator performs the second-stage operation (that is, so-called full-pressing operation) on the button 56a of the exposure switch 56, the radiation generating device 55 is connected to the radiation source 52. It is supposed to emit radiation from. Details of the radiation irradiation from the radiation generator 55 will be described later.

  As shown in FIG. 3, in the present embodiment, a console 58 formed of a computer or the like is provided in the front chamber R2. The console 58 can be configured to be provided outside the imaging room R1 and the front room R2, in a separate room, and the like, and is installed in an appropriate place. The console 58 is provided with a display unit 58a configured to include a CRT (Cathode Ray Tube), an LCD (Liquid Crystal Display), and the like, and includes input means such as a mouse and a keyboard (not shown).

  In addition, the console 58 is connected to or has a built-in storage means 59 composed of an HDD (Hard Disk Drive) or the like. Further, although not shown, the console 58 is connected to the console 58 via a network such as a LAN, HIS (Hospital Information System), RIS (Radiology Information System), PACS (Picture Archiving and Communication). System) etc. are connected.

  On the other hand, the radiographic imaging system 50 according to the present embodiment is not only configured in the imaging room as shown in FIG. 3 but can also be constructed on the round-the-wheel 60 as shown in FIG. 5, for example. . In this case, as shown in FIG. 5, for example, the radiographic imaging device 1 is brought into the hospital room R3 and inserted between the bed B and the patient H body or applied to the patient H body. Can be done.

  And radiation is irradiated to the radiographic imaging apparatus 1 from the radiation source 52P of the radiation generator 55 mounted in the roundabout wheel 60 through the body of the patient H who is a subject. In addition, the roundabout wheel 60 is also equipped with a console 58 composed of a notebook computer or the like. Although not shown in FIG. 5, the roundabout wheel 60 is configured to be mounted with the access point 53, the repeater 54, and the like shown in FIG. 3.

  The same applies to the case where the photographing is performed in the photographing room R1 shown in FIG. 3. For example, as shown in FIG. 5, the operator E such as a radiologist carries the portable terminal 70 having the display unit 71, and the console. It is also possible to configure the mobile terminal 70 to have the same function as the console 58, such as displaying an image to be displayed on the 58 display unit 58 a on the display unit 71 of the mobile terminal 70. If comprised in this way, it will become possible for operators, such as a radiographer, to confirm an image on the display part 71 of the portable terminal 70 which he carries, without going to the console 58 one by one. Therefore, it is convenient for the operator.

  In this embodiment, when the image data D or the like is transferred from the radiographic image capturing apparatus 1, the console 58 performs precision correction such as gain correction, defective pixel correction, and gradation processing according to the imaging region based on the data. It also functions as an image processing apparatus that generates a radiation image by performing various image processing.

  In the following, in order to simplify the description, a case where imaging is performed in the imaging room R1 shown in FIG. 3 will be described. However, as shown in FIG. The present invention can also be applied to a case in which the patient is constructed on the round-trip wheel 60 and, for example, the round-trip wheel 60 is brought into the hospital room R3 for photographing, and such a case is also included in the scope of the present invention.

[Shooting sequence in radiographic imaging]
Here, an imaging sequence in radiographic imaging will be briefly described. In the radiographic image capturing apparatus 1, the offset due to the dark charge (also referred to as dark current) superimposed on the image data D read out as described above is usually set before the radiographic image capture. Later, offset data O is read out as offset data O without irradiating the radiographic imaging apparatus 1 with radiation. In the following, for the sake of simplicity, the offset data O is read out as a radiographic image. It is assumed that the offset data O has already been transferred from the radiographic imaging apparatus 1 to the console 58 before the imaging.

  The radiation image capturing apparatus 1 is configured to release each charge from each radiation detection element 7 by periodically turning on the TFT 8 in order to remove the charge remaining in each radiation detection element 7 from before imaging. 7 reset processing is performed. Then, when imaging is started and an operator such as a radiologist performs the first-stage operation, that is, half-press operation (see FIG. 4B) on the exposure switch 56 of the radiation generator 55, the radiation generator 55 radiation sources 52 are activated.

  When the operator performs the second-stage operation, that is, the full-press operation (see FIG. 4C) on the exposure switch 56, the radiation generation device 55 sends an irradiation start signal to the radiographic imaging device 1. Send. When receiving the irradiation start signal, the radiographic imaging device 1 stops the reset process of each radiation detection element 7 and applies an off voltage to each scanning line 5 from the gate driver 15b (see FIG. 2) to turn off each TFT 8. The state is changed to a charge accumulation state in which the charges generated in each radiation detection element 7 due to radiation irradiation are accumulated in each radiation detection element 7.

  Then, when such preparation is completed, an interlock release signal is transmitted from the radiation imaging apparatus 1 to the radiation generation device 55. When the radiation generation device 55 receives the interlock release signal, the radiation source 52 emits radiation. Let

  When radiation irradiation from the radiation generator 55 is completed, the radiation imaging apparatus 1 sequentially applies on-voltages to the lines L1 to Lx of the scanning line 5 from the gate driver 15b, and detects each radiation as described above. Read processing of the image data D from the element 7 is performed. Then, the preview image data Dp is extracted from the read image data D at a predetermined ratio and transferred to the console 58.

  The console 58 generates a preview image from the preview image data Dp transferred from the radiation image capturing apparatus 1 and the offset data O corresponding thereto, and displays the preview image on the display unit 58a. Then, an operator such as a radiologist sees it and determines whether re-imaging is necessary. In the following, a case where re-imaging is not performed will be described in order to simplify the description. However, when re-imaging is performed, the radiographic image capturing apparatus 1 uses the image data D read out at the time of capturing, and the like. Is discarded and re-imaging is performed by resetting each radiation detection element 7 or the like.

  Further, as described above, when the radiographic image capturing apparatus 1 transfers the preview image data Dp to the console 58 after the reading process of the image data D, the remaining image data D is continuously transferred. In this embodiment, the radiographic image capturing apparatus 1 automatically captures the power consumption mode when the transfer of all the image data D to the console 58 is completed by ending the transfer of the remaining image data D. It is configured to switch from the possible mode to the power saving mode.

[Configuration for suppressing power consumption in radiation imaging apparatus]
Next, a configuration for suppressing power consumption in the radiographic image capturing apparatus 1 according to the present embodiment will be described with some examples. The operation of the radiographic image capturing apparatus 1 according to this embodiment will also be described.

[Configuration example 1]
A configuration example 1 described below is a configuration example serving as a basis or base of a configuration for suppressing power consumption in the radiographic imaging apparatus 1 according to the present embodiment. FIG. 6 is a block diagram illustrating a configuration part of Configuration Example 1 related to suppression of power consumption in the configuration of the radiation image capturing apparatus 1.

  In this configuration example 1, the radiographic image capturing apparatus 1 uses the power mode control unit 42 that switches the power consumption mode of the apparatus between at least the above-described imaging possible mode and the power saving mode, and the power mode control unit 42 consumes power. A prediction control unit 40 for instructing mode switching and a timer 41 are provided.

  In addition, the prediction control unit 40 has a relationship in which the shooting condition N is associated with a period Δt after a predetermined event related to the apparatus or shooting occurs. In the present embodiment, the prediction control unit 40 has this relationship in the form of a table T1 as illustrated in FIG. 7. Hereinafter, a description will be given of a case where the relationship is in the form of a table. It is also possible to configure so as to have the relationship in the form of, for example, a mathematical expression or a graph. In that case, the prediction control unit 40 is configured to determine the period Δt by substituting a numerical value corresponding to the imaging condition N into a mathematical formula or applying it to a graph. The same applies to the second table T2 described later.

  In the present embodiment, as shown in FIG. 7, the table T1 is further classified into periods Δt according to the age Y of the patient. Then, when the predetermined event occurs, the prediction control unit 40 calculates a period Δt corresponding to the shooting condition N of the shooting to be performed in accordance with the table T1, and the period Δt after the predetermined event occurs. When the time has elapsed, the power mode control unit 42 is instructed to switch the power consumption mode from the power saving mode to the photographing enabled mode.

  Then, when the power mode control unit 42 switches the power consumption mode of the apparatus from the power saving mode to the photographing enabled mode based on an instruction from the prediction control unit 40, the control unit 22 biases from the bias power source 14 (see FIG. 2). A reverse bias voltage is applied to each radiation detection element 7 via the line 9 or the like, power is supplied to the readout circuit 17, or an ON voltage or an OFF voltage is applied to each scanning line 5 from the gate driver 15b of the scanning driving means 15. The radiographic image capturing apparatus 1 is configured to shift to a state in which radiography can be performed, that is, a radiographable mode.

  In FIG. 6, the prediction control unit 40, the power mode control unit 42, and the control unit 22 are described as separate functional units. However, the control unit 22 includes the prediction control unit 40 and the power mode control unit 42. It can also be configured to function as. In the table T1, the period Δt is set not only for the “chest” and the “hip joint” shown in FIG.

  Hereinafter, the configuration of the above configuration example 1 will be specifically described.

[About predetermined events related to the device or shooting]
As described above, the prediction control unit 40 starts the lapse of the period Δt when a predetermined event related to the apparatus or shooting occurs. In other words, the predetermined event related to the device or shooting is a matter that triggers the prediction control unit 40 to start the lapse of the period Δt, and if it is a matter to be performed at the time of shooting, the predetermined event related to the device or shooting. It can be.

  The same applies to each of the following configuration examples. As the predetermined event related to the apparatus or imaging, for example, imaging order information is transmitted from the console 58 to the radiographic imaging apparatus 1 for each imaging. . In the following, the case where the imaging order information is transmitted from the console 58 to the radiographic image capturing apparatus 1 will be described. However, the imaging order information is not transmitted through the console 58, for example, the RIS, HIS, or the like described above. It is also possible to configure to directly transmit to the radiation image capturing apparatus 1 from an external system or the like, and in this case, the present invention can be applied.

  In addition to the transmission of the imaging order information to the radiographic imaging apparatus 1 as described above, the predetermined event related to the apparatus or imaging is, for example, the end of the previous imaging (in the present embodiment, As described above, the power consumption mode is switched to the power saving mode at the same time as described above.) From among the plurality of radiographic imaging apparatuses 1, the radiographic imaging apparatus 1 used for imaging by an operator such as a radiographer is selected. This includes the selection of the patient to be photographed next, the entry of the patient into the photographing room R1, the entry of the patient into the changing room (not shown), and the like.

  When entering the patient's shooting room R1 or changing room as a predetermined event related to the apparatus or shooting, a sensor is provided to detect that the patient has entered the shooting room R1 or changing room. A signal is transmitted to the radiographic image capturing apparatus 1 by transmitting a signal to the radiographic image capturing apparatus 1 or an operator such as a radiographer confirming entry into the room by operating the portable terminal 70 (see FIG. 5), for example. The prediction control unit 40 of the radiographic imaging device 1 that has received the signal can be configured to start the lapse of the period Δt.

  In the following, a case where the imaging order information POI is transmitted from the console 58 to the radiation imaging apparatus 1 is set as a predetermined event related to the apparatus or imaging will be described. The same applies to the case where other matters are defined as predetermined events. Note that when the predetermined event is set as another matter, the starting point of the time period Δt changes. Therefore, when the setting of a predetermined event changes, the numerical value of the period Δt in the table T1 shown in FIG. 7 changes.

  Further, for example, when the imaging order information POI is once transmitted to the radiographic imaging apparatus 1 and then the changed imaging order information POI is retransmitted, the prediction control unit 40 determines the elapsed time of the period Δt at that time. Clear and start time again from zero.

  Here, the imaging order information POI is information for specifying information about a patient who is an imaging target, imaging conditions, and the like regarding each imaging. For example, as illustrated in FIG. 8, “patient ID” P2 as patient information, “Patient name” P3, “sex” P4, “age” P5, “clinical department” P6, “imaging site” P7, “imaging direction” P8, “body position” P9, etc. are set as imaging conditions.

  For example, “shooting order ID” P1 is assigned in the order in which shooting orders are registered. “Position” P9 is an item for setting which one of the above-described bucky devices 51 (see FIG. 3), that is, the standing device 51A or the lying device 51B is used.

[Specific processing flow]
In general, prior to imaging, an operator such as a radiographer acquires each imaging order information POI corresponding to imaging performed on that day, for example, from the HIS or RIS in a facility such as a hospital on the console 58. Then, when an operator such as a radiographer selects imaging order information POI related to imaging to be performed on the console 58 at the start of imaging, for example, imaging order information POI related to imaging to be performed next from the console 58 is changed to radiation for each imaging. The image capturing apparatus 1 is configured to be transmitted.

  The radiographic image capturing apparatus 1 performs the reading process of the image data D after the previous imaging is completed, and after the preview image data Dp and the remaining image data D are transferred to the console 58, the power consumption mode is set. The mode has been switched from the photographable mode to the power saving mode. In this state, when the imaging order information POI is transmitted from the console 58 to the radiographic imaging apparatus 1 for the next imaging (that is, when a predetermined event occurs), the prediction control unit 40 Then, the time-lapse start request is transmitted to the timer 41 to start the time-lapse of the period Δt by the timer 41.

  At the same time, the prediction control unit 40, in accordance with the above table T1, "posture" P9 (that is, "standing position" or "prone position") specified in the transmitted photographing order information POI, and the figure In the case of the table T1 shown in FIG. 7, the patient's age Y (that is, “age” P5) is further applied to the table T1, and a period Δt suitable for the imaging condition N is calculated.

  On the other hand, when an operator such as a radiographer operates the console 58 in the front room R2 (see FIG. 3) and transmits the imaging order information POI to the radiographic imaging apparatus 1 (at this time, the radiographic imaging apparatus 1 predicts). The control unit 40 causes the timer 41 to start lapse of time.) Moves to the imaging room R1 to stand the patient in front of the standing-up imaging device 51A, or the imaging platform of the standing-up imaging device 51B. Encourage them to lie down and take necessary measures, such as adjusting the position and orientation of the cassette holder 51a and the radiation source 52, etc.

  Then, an operator such as a radiologist returns to the front chamber R2, takes out the exposure switch 56 (see FIG. 4A) of the radiation generator 55, and performs the first-stage operation (half-press operation. FIG. 4B). )). In response, the radiation generating device 55 activates the radiation source 52. When the operator further performs a second-stage operation (full-press operation; see FIG. 4C) on the exposure switch 56, radiation is emitted from the radiation source 52.

  At this time, as described above, when the second stage operation is performed on the button 56a of the exposure switch 56, an irradiation start signal is transmitted from the radiation generation device 55 to the radiographic imaging device 1, and the radiographic imaging device 1 By transmitting an interlock release signal to the radiation generation device 55 when preparation for imaging such as shifting to the charge accumulation state is completed, the radiation generation device 55 can emit radiation. That is, at least when an operator such as a radiologist performs the second stage operation on the exposure switch 56 of the radiation generating device 55, the power consumption mode of the radiographic imaging device 1 is not already in the imaging enabled mode. Don't be.

  Therefore, in the configuration example 1, the period Δt in the table T1 (see FIG. 7) is after the operator such as a radiographer transmits the imaging order information from the console 58 to the radiographic imaging apparatus 1 as described above. (At this time, the time period Δt starts), after the above operation is performed in the photographing room R1, the period is set until the operation returns to the front room R2 and before the operation of the exposure switch 56 is started.

  According to this configuration, the radiographic imaging device 1 is exposed to the radiation generating device 55 in the next imaging by setting the power consumption mode of the radiographic imaging device 1 in the power saving mode after the previous imaging is completed. It is possible to accurately switch to the photographing enabled mode before the switch 56 is operated. For this reason, it is possible to suppress wasteful power consumption by setting the power consumption mode of the radiographic image capturing apparatus 1 as the power saving mode during the period between the imagings and not performing the imaging. At the same time, since the power consumption mode of the radiographic image capturing apparatus 1 is switched to the image capturing possible mode at the time when the next image capturing is performed, it is possible to accurately perform the image capturing.

[effect]
As described above, when configured as in configuration example 1, the power consumption of the radiographic imaging apparatus 1 is accurately suppressed, and when an operator such as a radiographer performs imaging, imaging is performed accurately. It becomes possible.

  The same applies to each of the following configuration examples, but the prediction control unit 40 of the radiographic image capturing apparatus 1 is configured to have the above-described table T1 (relationship) for a plurality of predetermined events, and the predetermined events Each time the timer 41 is started, the time period Δt by each timer 41 is started. For example, the table T1 (relationship) used for each photographing can be changed.

  That is, for example, the table T1 (relationship) in which the patient enters the imaging room R1 is a predetermined event until the first imaging, and the end of the previous imaging is determined as a predetermined event when imaging the same patient thereafter. The table T1 (relationship) to be used can be switched to use the table T1 (relationship).

  Alternatively, it is possible to use a plurality of tables T1 (relationships) in parallel, and when any of a plurality of periods Δt set based on the plurality of tables T1 (relationships) has elapsed. Thus, the power consumption mode of the radiographic image capturing apparatus 1 can be switched from the power saving mode to the image capturing enable mode.

  In this way, by configuring the plurality of tables T1 (relationships) to be switched and used in parallel according to the imaging situation, the power consumption mode of the radiographic imaging apparatus 1 can be saved according to the imaging situation. It is possible to accurately switch from the power mode to the photographing enable mode.

[Factor for setting period Δt]
In order to ensure that the power consumption mode of the radiographic image capturing apparatus 1 is set to the radiographable mode when an operator such as a radiologist operates the exposure switch 56 of the radiation generating apparatus 55, the radiation Although it is better to switch the power consumption mode of the image capturing apparatus 1 from the power saving mode to the shooting enabled mode as soon as possible, the purpose is to reduce the period during which the power consumption mode is the power saving mode and to suppress the power consumption. Cannot be achieved.

  Therefore, it is necessary to set the period Δt to an appropriate time. As a factor for appropriately setting the period Δt, the table T1 shown in FIG. 7 shows a case where attention is paid to the imaging condition N such as “imaging site” and “position” and the age Y of the patient. Yes.

  That is, for example, when photographing in the “standing position”, an operator such as a radiographer stands the patient upright in front of the bucky device 51A for standing position photographing (see FIG. 3) and raises the height of the cassette holder 51a. Since it is only necessary to adjust the height or adjust the posture, the work can be performed relatively quickly. Therefore, the operator returns to the front chamber R2 immediately after finishing the above work, and thus the period Δt is set short.

  On the other hand, for example, in the case of imaging in the “recumbent position”, the operator urges the patient to lie down on the imaging table of the bucky device 51B for the supine position imaging, and adjusts the posture or the radiation source. Adjustment of the position of 52 is required, and it takes time to prepare for shooting as compared with the case of shooting in the above-mentioned “standing position”. Therefore, the period Δt is set longer than in the “standing position”.

  For example, if the patient is 70 years old or older, it takes time to move and take a predetermined posture as compared with young patients. Therefore, even when photographing the same “chest, standing”, the period Δt is set. Can be set longer. In the case of “hip joint, supine” photography, it takes time for an elderly patient 70 years or older to move up on the photography stand of the bucky device 51B for supine photography, and the body is tilted diagonally. It takes time to take a predetermined posture such as doing. For this reason, in the table T1 shown in FIG. 7, the period Δt is set to a time that is three times or more longer than in the case of photographing “hip joint, prone position” of a young patient 69 years old or younger.

  As described above, in the configuration example 1 and each configuration example described below, the case where the imaging condition N and the age Y of the patient are focused as the factors for setting the period Δt is described as an example. The following can be considered as factors for setting Δt.

  That is, when the imaging order information POI is transmitted from the console 58 to the radiographic imaging apparatus 1 as a predetermined event related to the apparatus or imaging as in this embodiment, When performing a plurality of imaging, the imaging order information POI is transmitted from the console 58 to the radiographic image capturing apparatus 1 for each imaging, so that the period Δt can be set for each imaging. At that time, since there is preparation for shooting for the first shooting, it takes time to start shooting (that is, until the operator operates the exposure switch 56), but the second and subsequent shootings are performed. Because it is already ready, it can be done relatively quickly.

  Therefore, for example, when performing a plurality of photographings on the same patient, the period Δt is set to be long for the first photographing and the period Δt for the second and subsequent photographings, with the factor being the number of photographings. Can be configured to be set shorter.

  In some cases, shooting is performed by a plurality of operators, but in this case, the time required for shooting is shorter than when shooting is performed by one operator. Further, the higher the skill level of an operator such as a radiologist, the shorter the time required for imaging. Furthermore, whether or not the patient can stand alone, whether or not an attendant is necessary, whether or not the patient has changed clothes, whether or not to use an instrument for imaging, what type of instrument, or how the operator or console 58 provides imaging order information The period Δt to be set can also change depending on factors such as whether to transmit to the radiographic image capturing apparatus 1 at appropriate timing.

  As described above, the table T1 can be set so that various factors and the period Δt are associated with each other in addition to the imaging condition N and the patient age Y shown in FIG.

[When the exposure switch is operated before the elapse of the period Δt]
The same applies to the following configuration examples. However, in actual radiographing, an operator such as a radiographer generates radiation when the above-described period Δt has not elapsed since the occurrence of a predetermined event. There is a possibility of operating the exposure switch 56 of the device 55. In such a case, if the power consumption mode of the radiographic image capturing apparatus 1 remains in the power saving mode, it becomes impossible to perform imaging. Alternatively, after switching the power consumption mode of the radiographic imaging device 1 to the radiographable mode, radiation is finally emitted from the radiation generation device 55, and thus the operator has to wait until radiation is emitted. obtain.

  Therefore, when the second stage operation (full push operation) is performed on the exposure switch 56 of the radiation generating device 55 by an operator such as a radiographer, the power consumption mode of the radiation image capturing device 1 is imaged from the power saving mode. Since it is too late to switch to the possible mode, the prediction control unit 40 of the radiographic image capturing apparatus 1 sets the above-described period Δt when the power consumption mode is the power saving mode when preparation for radiation irradiation is completed. Even if the time has not elapsed, it is possible to instruct the power mode control unit 42 to switch the power consumption mode from the power saving mode to the photographing enabled mode.

  In this case, “when the preparation for radiation irradiation is ready” means, for example, as shown in FIG. 4B, an operator such as a radiation engineer is one step away from the exposure switch 56 of the radiation generator 55. It may be defined as operating the eyes, and for example, defined as the operator touching the exposure switch 56 or the operator opening the door between the photographing room R1 and the front room R2. It is also possible to do. In order to enable the radiographic imaging apparatus 1 to recognize that these operations have been performed (that is, preparation for radiation irradiation), for example, a detection device that detects these operations is provided and detected. The apparatus is configured to transmit a signal to the radiation image capturing apparatus 1.

  For example, when the first stage operation (half-press operation) is performed by the operator (that is, when preparation for radiation irradiation is completed), the power consumption mode of the radiographic imaging device 1 is the power saving mode. In some cases, the prediction control unit 40 of the radiographic image capturing apparatus 1 at that time (that is, even if the period Δt has not elapsed) causes the power mode control unit 42 to switch the power consumption mode from the power saving mode to the image capture possible mode. Switch to.

  With this configuration, since the period Δt has not elapsed, the radiographic image is obtained when the operator performs the second-stage operation (full pressing operation) on the exposure switch 56 of the radiation generator 55. It is possible to accurately prevent the situation where the power consumption mode of the photographing apparatus 1 is still in the power saving mode.

[Configuration example 2]
Next, in the configuration example 2, a case will be described in which the period is set by paying attention to the relationship between the previous shooting and the current shooting as described in the configuration example 1 above. FIG. 9 is a block diagram illustrating a configuration part of Configuration Example 2 related to suppression of power consumption in the configuration of the radiation image capturing apparatus 1. In the configuration example 2 as well, the case where the imaging condition N and the patient's age Y are used as factors for setting the period will be described. However, the fact that other factors can be used is described above. That's right.

  In the configuration example 2, as in the case of the configuration example 1 described above, the radiographic imaging device 1 is configured to include the prediction control unit 40, the timer 41, the power mode control unit 42, and the like. A management unit 43 is provided. The history management unit 43 temporarily stores at least the shooting condition Nold in the previous shooting. The history management unit 43 is configured to temporarily store items necessary for setting the period Δt according to a table T2 described later.

  When the imaging order information POI related to the current imaging is transmitted from the console 58 to the radiographic image capturing apparatus 1 as described above, the history management unit 43 extracts the imaging condition N from the transmitted imaging order information POI. The image capturing condition Nold in the previous image capturing is transmitted to the prediction control unit 40 while being temporarily stored. In other words, the history management unit 43 functions as a buffer memory for the shooting condition N.

  As will be described below, when considering whether or not the patient is the same in the previous imaging and the current imaging, the history management unit 43 includes the imaging condition Nold in the previous imaging. The patient information Ipold such as the patient ID in the previous imaging is also temporarily stored, and the patient information Ipold is transmitted to the prediction control unit 40 together with the imaging condition Nold in the previous imaging as shown in FIG.

  In this configuration example 2, the prediction control unit 40, as exemplified in FIG. 10, is a period from the occurrence of the imaging conditions Nnew, Nold, the age Y of the patient in the current imaging, and a predetermined event related to the apparatus and imaging. As a second relationship in which Δt is associated, a second table T2 (hereinafter simply referred to as table T2) is provided in advance. As described above, mathematical expressions, graphs, and the like can be used instead of the table T2. In the example of the table T2 shown in FIG. 10, the case where the period Δt is classified according to whether or not there is a change in the patient between the previous imaging and the current imaging (“Ipold → Ipnew”) is shown. ”Item).

  In the table T2, not only “chest” and “abdomen” shown in FIG. 10 as “imaging site” in the imaging conditions Nnew and Nold, but also a period Δt is set for all combinations of imaging sites.

  In the configuration example 2, as in the case of the configuration example 1 described above, the prediction control unit 40 transmits a time-lapse start request to the timer 41 when a predetermined event related to the apparatus or shooting occurs, and the period Δt by the timer 41 is set. Start aging.

  FIG. 9 shows a case where it is set to receive the shooting order information POI related to the current shooting transmitted from the console 58 as a predetermined event related to the apparatus or shooting. The control unit 40 causes the timer 41 to start elapse of the period Δt at the time when the imaging order information POI related to the current imaging transmitted from the console 58 is received. Also, in the following description, a case where it is set to receive shooting order information POI related to the current shooting transmitted from the console 58 as a predetermined event related to the apparatus or shooting will be described. It is not intended to be limited.

  Then, according to the table T2, the prediction control unit 40 captures the shooting conditions Nold in the previous shooting temporarily stored in the history management unit 43 and the shooting conditions of the current shooting specified in the received shooting order information POI. From Nnew, a period Δt after receiving the shooting order information POI regarding the current shooting is calculated.

  Then, the prediction control unit 40 causes the power mode control unit 42 to change the power consumption mode of the radiographic imaging apparatus 1 from the power saving mode when the period Δt has elapsed since the timer 41 started to elapse the period Δt. It is configured to instruct to switch to the photographable mode. Then, when the power mode control unit 42 switches the power consumption mode of the apparatus from the power saving mode to the photographing enabled mode based on an instruction from the prediction control unit 40, the control unit 22 biases from the bias power source 14 (see FIG. 2). A state in which the radiation image capturing apparatus 1 can perform imaging by performing a process such as applying a reverse bias voltage to each radiation detecting element 7 via the line 9 or the like or supplying power to the readout circuit 17. That is, the mode is shifted to the photographing enabled mode.

  In this case, for example, if there is no change in the patient between the previous shooting and the current shooting, for example, if the shooting conditions N are the same between the previous shooting and the current shooting, the posture of the patient is changed between the previous shooting and the current shooting, for example. Since only the change is made, the period Δt can be set short. In this case as well, if the patient is elderly, it takes time to change the posture accordingly, so the period Δt is set longer than when the patient is young.

  In addition, even if there is no change in the patient between the previous shooting and the current shooting, for example, if the “posture” changes from “standing” to “prone” in the previous shooting and this shooting, a radiologist, etc. The operator must guide the patient from the position of the standing-up imaging device 51A to the standing-up imaging device 51B and lift the patient on the imaging table of the standing-up imaging device 51B. Therefore, the period Δt is longer than when the “posture” does not change between the previous shooting and the current shooting (for example, from “standing position” to “standing position” or from “standing position” to “standing position”). Is set.

  On the other hand, if there is a patient change between the previous shooting and the current shooting (that is, if there is a change), it takes a long time to change the patient, so the overall period is longer than when there is no change in the patient. Δt is set long. In addition, if the “position” does not change between the previous shooting and the current shooting (for example, from “standing position” to “standing position” or “from supine position” to “standing position”), Since the position, orientation, and the like of the source 52 have already been adjusted and fine adjustment is sufficient for the current shooting, the period Δt is set shorter than when the “position” changes between the previous shooting and the current shooting.

  And if comprised in this way, like the case of the said structural example 1, the power consumption mode of the radiographic imaging device 1 which is the power saving mode after the last imaging | photography is complete | finished will be radiation by this imaging | photography. An operator such as an engineer can accurately switch to the imaging enabled mode before operating the exposure switch 56 of the radiation generating device 55. For this reason, it is possible to suppress wasteful power consumption by setting the power consumption mode of the radiographic image capturing apparatus 1 as the power saving mode during the period between the imagings and not performing the imaging. At the same time, since the power consumption mode of the radiographic image capturing apparatus 1 is switched to the image capturing possible mode at the time when the next image capturing is performed, it is possible to accurately perform the image capturing.

[effect]
As described above, when configured as in configuration example 2, as in the case of configuration example 1 described above, while the power consumption of the radiographic image capturing apparatus 1 is accurately suppressed, an operator such as a radiographer can operate. When shooting, it is possible to accurately perform shooting. In addition, since the accurate period Δt is set for each of the previous shooting and the current shooting when the shooting condition N changes and when the shooting condition N does not change, the above beneficial effect can be accurately obtained even when the shooting condition N changes. It will be possible to demonstrate.

[Configuration example 3]
By the way, the period Δt that is set in the table T1 in the configuration example 1 and the table T2 in the configuration example 2 after the occurrence of the predetermined event related to the apparatus or shooting is too short than the period in actual shooting. It may be set to. Thus, if each period Δt is too shorter than the actual imaging period, for example, an operator such as a radiographer still guides the patient in the imaging room R1, and the power consumption mode of the radiographic imaging apparatus 1 Although it is not necessary to switch to the radiographable mode, the radiographic image capturing apparatus 1 may be wastefully consumed with the power.

  On the other hand, if each period Δt set in the tables T1 and T2 is too longer than the actual imaging period, an operator such as a radiographer returns to the anterior room R2 and then the radiation generating apparatus. At the time when the first stage operation (half-pressing operation) is performed on the 55 exposure switches 56, the power consumption mode of the radiographic image capturing apparatus 1 is still in the power saving mode, and at that time, the radiographing mode is set. Switching will occur frequently.

  Therefore, in the configuration example 3, the case where the radiographic image capturing apparatus 1 performs learning so as to be able to change the periods Δt set in the tables T1 and T2 as described above so as to match the actual imaging period as much as possible will be described. To do. In the following, a case where the period Δt in the configuration example 2 is changed by learning will be described. However, the period Δt in the configuration example 1 can be configured to be changed in exactly the same manner.

  In order to change the period Δt set in the table T2 so as to match the period in actual shooting, first, an actual elapsed time corresponding to the period Δt, that is, a predetermined event related to the apparatus and shooting occurs. It is necessary to accumulate as data what kind of time the elapsed time ΔT from when the irradiation preparation to the radiation preparation is completed.

  Therefore, in the configuration example 3, for example, as illustrated in FIG. 11, the history management unit 43 of the radiographic image capturing apparatus 1 has elapsed time from when a predetermined event related to the apparatus or radiography occurs until preparation for radiation irradiation is completed. It is configured to store ΔT.

  Note that a storage unit that stores the elapsed time ΔT may be provided separately from the history management unit 43. In addition, FIG. 11 shows a case where it is set to receive the shooting order information POI related to the current shooting transmitted from the console 58 as a predetermined event related to the apparatus or shooting. Although the case where it is set to receive the shooting order information POI related to the current shooting transmitted from the console 58 as a predetermined event related to the apparatus or shooting will be described, the present invention is not limited to this case.

  Further, “ready for radiation irradiation” means that, as described above, for example, as described above, an operator such as a radiation engineer performs the first-stage operation on the exposure switch 56 of the radiation generator 55. For example, it may be defined that the operator touches the exposure switch 56 or that the operator opens the door between the photographing room R1 and the front room R2. It is. In order to enable the radiographic imaging apparatus 1 to recognize that these operations have been performed (that is, preparation for radiation irradiation), for example, a detection device that detects these operations is provided and detected. The apparatus is configured to transmit a signal to the radiation image capturing apparatus 1.

  Further, when the elapsed time ΔT is defined as, for example, the elapsed time from when the radiation image capturing apparatus 1 receives the imaging order information regarding the current imaging until the radiation is irradiated, as described above, For example, it is possible to configure so that a signal is transmitted from the radiation generation device 55 to the radiographic imaging device 1 when radiation is emitted from the radiation source 52.

  When the elapsed time ΔT is defined in this way, it should be ready for radiation irradiation a predetermined time before the time when the radiation is irradiated. Therefore, as described above, when the elapsed time ΔT is defined as the elapsed time from when the radiation image capturing apparatus 1 receives the imaging order information regarding the current imaging until the radiation is irradiated, in practice, A time obtained by subtracting a predetermined time from the elapsed time ΔT is stored in the history management unit 43.

  The history management unit 43 is provided with storage areas classified into items corresponding to the table T2 (see FIG. 10), for example, as shown in FIG. Then, for example, every time shooting is performed, the prediction control unit 40 transmits information on the actual elapsed time ΔT that has elapsed with the shooting to the history management unit 43, and the history management unit 43 sets shooting conditions for the previous shooting. The actual elapsed time ΔT is stored in each corresponding storage area in accordance with Nold, the imaging condition Nnew in the current imaging, the patient's age Y, whether the patient has been changed, or the like.

  On the other hand, the prediction control unit 40 can change the period Δt after the occurrence of a predetermined event related to the apparatus and the shooting according to each elapsed time ΔT stored in the history management unit 43 in this way. It is possible to configure.

  In this case, for example, a certain period Δt of the table T2 (see FIG. 10) (for example, “no change” of the patient), the current imaging condition Nnew is “chest”, “standing”, and the previous imaging condition Nold is also “chest”. In the case of changing the period Δt set to “5” when the patient is “standing” and the age of the patient is 69 years old or less, of the elapsed times ΔT stored in the storage area of the history management unit 43 The elapsed time ΔT corresponding to the period Δt (that is, in the above example, the patient is “no change”, the current imaging condition Nnew is “chest”, “standing”, and the previous imaging condition Nold is also “chest”, “standing” Is changed based on the stored elapsed time ΔT) when the patient's age is 69 years old or less.

  Then, for example, by calculating a statistical value of the corresponding elapsed time ΔT, that is, an average value, a mode value, an intermediate value, a maximum value, a minimum value, etc., and resetting it as a corresponding period Δt, the history management unit It is possible to change the period Δt based on the elapsed time ΔT stored in 43.

  Further, when the period Δt is frequently changed, an operator such as a radiologist may feel uncomfortable. Therefore, for example, as shown in FIG. 13, with respect to a preset period Δt, for example, a threshold value Δth1 and a threshold value Δth2 are set on the side longer or shorter than the period Δt, and the actual elapsed time ΔT is set. The period Δt can be changed only when an elapsed time longer than the threshold Δth1 is detected or when an elapsed time shorter than the threshold Δth2 is detected.

[effect]
As described above, when configured as in configuration example 3, as in the case of configuration example 1 and configuration example 2 described above, the power consumption of the radiographic image capturing apparatus 1 is accurately suppressed and a radiographer or the like is used. When the operator of the above performs shooting, it is possible to accurately perform shooting. In addition, it becomes possible to optimize the period Δt (see FIGS. 7 and 10) after the occurrence of a predetermined event related to the apparatus or the shooting by learning, and the above-mentioned beneficial effects can be exhibited more accurately. It becomes.

[Configuration Example 4]
In an emergency or the like, it is slow to switch the power consumption mode of the radiographic imaging apparatus 1 from the power saving mode to the radiographable mode after the period Δt as described above. There may be a case where it is desired to quickly switch the power consumption mode to the photographing enable mode. Therefore, an operator such as a radiographer performs a predetermined operation on the radiographic image capturing apparatus 1, so that the power mode control unit 42 (see FIG. 6, FIG. 9, and FIG. 11) directly controls the radiographic image capturing apparatus 1. The power consumption mode can be configured to be instructed to switch from the power saving mode to the photographing enabled mode.

  In this case, although not shown in the figure, for example, the communication unit 30 (see FIG. 2) and the power mode control unit are directly connected, and an operator such as a radiographer can connect the radiographic imaging apparatus 1 from the console 58, for example. When a switching instruction signal is transmitted in the form of a Wake On Wireless LAN packet, the switching instruction is transmitted from the communication module constituting the communication unit 30 to the power mode control unit 42 to control the power mode. The unit 42 can be configured to switch the power consumption mode from the power saving mode to the shootable mode based on the switching instruction.

  In addition to the wake-on-wireless-run method described above, for example, an operator such as a radiographer switches to the power mode control unit 42 by operating the change-over switch 26 (see FIG. 1) of the radiographic imaging apparatus 1. It is also possible to configure so that an instruction is given, and the method of giving a switching instruction to the power mode control unit 42 is not limited to a specific method.

  And by comprising in this way, when there is an instruction to switch the power consumption mode from the outside, even if there is no instruction from the prediction control unit 40 in the power mode control unit 42 of the radiographic image capturing apparatus 1, Based on the switching instruction, it is possible to switch the power consumption mode of the radiographic imaging apparatus 1 from the power saving mode to the radiographable mode, and to quickly save the power consumption mode of the radiographic imaging apparatus 1 in an emergency or the like. It becomes possible to switch from the mode to the photographing enabled mode.

[Configuration Example 5]
In the configuration example 1 to the configuration example 3 described above, the prediction control unit 40, the history management unit 43, and the like are provided in the radiographic image capturing apparatus 1, and the time period Δt in the radiographic image capturing apparatus 1 or the radiographic image capturing apparatus 1 The case where determination of switching from the power saving mode of the power consumption mode to the photographing enabled mode is performed has been described. However, these processes are performed by an external control device, and when the period Δt has elapsed, a switching signal is transmitted to the radiographic image capturing device 1 so that the power consumption mode is switched from the power saving mode to the image capturing possible mode. It is also possible to configure. In this case, the control device can be configured by the console 58 or the like, for example, but a computer other than the console 58 can also be used.

  For example, when the above configuration example 1 is configured to be performed by the external control device 80, the prediction control unit 40 and the timer 41 (and the history management unit 43) are provided in the control device 80 as shown in FIG. In addition, a power mode control unit 42 is provided on the radiation image capturing apparatus 1 side. When the control device 80 is the console 58, the imaging order information POI acquired by the control device 80 is input to the prediction control unit 40, and when the control device 80 is other than the console 58. Is configured such that the control device 80 acquires the imaging order information POI from another console 58, RIS, or the like and inputs it to the prediction control unit 40.

  Then, when the period Δt determined based on the tables T1 and T2 as described in the first and second configuration examples or changed as described in the third configuration example has elapsed, the control device A switching signal is transmitted from the 80 prediction control unit 40 to the radiographic image capturing apparatus 1, and the power consumption mode of the radiographic image capturing apparatus 1 is changed from the power saving mode to the power mode control unit 42 of the radiographic image capturing apparatus 1. It can be configured to instruct to switch to

[effect]
As described above, when configured as in configuration example 5, as in the case of configuration example 1 to configuration example 3, the power consumption of the radiographic imaging apparatus 1 is accurately suppressed and a radiographer or the like is used. When the operator of the above performs shooting, it is possible to accurately perform shooting. In addition, since processing such as indexing of the period Δt is performed by the external control device 80, it is not necessary to perform such processing in the radiographic image capturing device 1, and the power consumption of the radiographic image capturing device 1 is further reduced accordingly. There is a merit that it becomes possible.

  In the above-described embodiment, a case has been described in which the radiographic image capturing apparatus 1 and the radiation generating apparatus 55 exchange signals (that is, an irradiation start signal and an interlock release signal) and perform imaging while synchronizing. For example, as described in Japanese Patent Application Laid-Open No. 2009-219538, International Publication No. 2011/13517, International Publication No. 2011/152093, etc., the radiographic imaging apparatus 1 and the radiation generation apparatus 55 exchange signals and the like. The present invention can be applied even when the radiation image capturing apparatus 1 itself is configured to detect the start of radiation irradiation without performing the above.

  Moreover, it goes without saying that the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the gist of the present invention.

1 Radiographic imaging device (portable radiographic imaging device)
7 Radiation Detection Element 24 Battery 40 Prediction Control Unit 42 Power Mode Control Unit 43 History Management Unit (Storage Unit)
50 Radiation imaging system 55 Radiation generator 56 Exposure switch N Imaging condition Nnew Imaging condition Nold in this imaging Nold Imaging condition POI in previous imaging Imaging order information T1 Table T2 Table (second table)
Δt Time since the occurrence of a predetermined event ΔT Elapsed time

Claims (12)

In a portable radiographic imaging device comprising a plurality of radiation detection elements arranged two-dimensionally,
The power consumption mode of the apparatus is switched between at least two modes: a shootable mode in which shooting can be performed and a power saving mode in which the amount of power consumption is lower than that in the shootable mode but cannot be shot. A mode control unit;
A prediction control unit that instructs the power mode control unit to switch the power consumption mode;
With
Built-in battery for supplying power to each functional unit including the power mode control unit and the prediction control unit,
The prediction control unit
A relationship in which shooting conditions are associated with a period from when a predetermined event related to the device or shooting occurs to when the power consumption mode is switched;
When the predetermined event occurs, according to the relationship, the period corresponding to the shooting condition of shooting to be performed from now is determined, and when the period elapses after the predetermined event occurs, the power mode A portable radiographic image capturing apparatus characterized by instructing a control unit to switch the power consumption mode from a power saving mode to a radiographable mode. A history management unit that stores at least the shooting conditions of the last shot;
The prediction control unit
Having at least a second relationship in which the shooting conditions in the previous shooting, the shooting conditions in the current shooting, and the period are associated with each other;
When the shooting order information related to the current shooting is received, the shooting conditions in the previous shooting stored in the history management unit and the received shooting order information are specified according to the second relationship. The period is determined from the shooting conditions of the current shooting, and the power consumption mode is shot from the power saving mode to the power mode control unit when the period has elapsed since the predetermined event occurred. The portable radiographic image capturing apparatus according to claim 1, wherein switching to a possible mode is instructed.   The portable radiographic image capturing apparatus according to claim 1, further comprising a storage unit that stores an elapsed time from when the predetermined event occurs until preparation for radiation irradiation is completed.   The portable radiographic image capturing apparatus according to claim 1, further comprising a storage unit that stores an elapsed time from when the predetermined event occurs until radiation is irradiated.   The said prediction control part is comprised so that the said period after the said predetermined event generate | occur | produces can be changed based on the said elapsed time memorize | stored in the said memory | storage part. Item 6. The portable radiographic image capturing device according to Item 3 or Item 4.   Even if there is no instruction from the prediction control unit, the power mode control unit switches the power consumption mode from the power saving mode based on the switching instruction when there is an instruction to switch the power consumption mode from the outside. The portable radiographic imaging device according to any one of claims 1 to 5, wherein the mode is switched to a radiographable mode. The portable radiographic imaging device according to any one of claims 1 to 6,
A radiation generator for emitting radiation to the portable radiographic imaging device;
With
The predictive control unit of the portable radiographic imaging device, when the preparation for radiation irradiation is ready, when the power consumption mode is a power saving mode, even if the period has not passed, A radiographic imaging system characterized by instructing a power mode control unit to switch the power consumption mode from a power saving mode to a radiographable mode. A plurality of radiation detection elements arranged two-dimensionally;
The power consumption mode of the apparatus is switched between at least two modes: a shootable mode in which shooting can be performed and a power saving mode in which the amount of power consumption is lower than that in the shootable mode but cannot be shot. A mode control unit;
A battery for supplying power to each functional unit including the power mode control unit;
A portable radiographic imaging device comprising:
A control device including a prediction control unit that instructs the power mode control unit of the portable radiographic imaging device to switch the power consumption mode;
With
The prediction control unit of the control device includes:
A relationship in which shooting conditions are associated with a period from when a predetermined event related to the device or shooting occurs to when the power consumption mode is switched;
When the predetermined event occurs, according to the relationship, the period corresponding to the shooting condition of shooting to be performed from now is determined, and when the period elapses after the predetermined event occurs, the portable type A switching signal is transmitted to the radiographic imaging apparatus, and the power mode control unit of the portable radiographic imaging apparatus is instructed to switch the power consumption mode from the power saving mode to the imaging enable mode. Radiation imaging system. The control device includes a history management unit that stores at least the shooting condition in the previous shooting.
The prediction control unit of the control device includes:
Having at least a second relationship in which the shooting conditions in the previous shooting, the shooting conditions in the current shooting, and the period are associated with each other;
When the shooting order information related to the current shooting is received, the shooting conditions in the previous shooting stored in the history management unit and the received shooting order information are specified according to the second relationship. From the imaging conditions of the current imaging, the period is determined, and when the period elapses after the predetermined event occurs, a switching signal is transmitted to the portable radiographic imaging device, and the portable type The radiographic image capturing system according to claim 8, wherein the power mode control unit of the radiographic image capturing apparatus is instructed to switch the power consumption mode from a power saving mode to a radiographable mode.   The radiographic imaging according to claim 8, wherein the control device includes a storage unit that stores an elapsed time from when the predetermined event occurs until preparation for radiation irradiation is completed. system.   The radiographic imaging system according to claim 8, wherein the control device includes a storage unit that stores an elapsed time from the occurrence of the predetermined event to the irradiation of radiation.   The prediction control unit of the control device is configured to be able to change the period after the predetermined event has occurred based on the elapsed time stored in the storage unit. The radiographic imaging system of Claim 10 or Claim 11 characterized by the above-mentioned.

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