JP2006208313A - Radiographical image detector and radiographical image photographing system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance operability in photographing, in a radiographical image detector and a radiographical image photographing system for photographing a radiographical image, in particular, represented by an X-ray image, relating to the radiographical image detector and a radiographical image photographing system. <P>SOLUTION: This cassette type radiographical image detector 5 for detecting an irradiated radiation to acquire radiographical image information has as operation states a photographable state capable of detecting the radiation, and a plurality of photographing standby states of electric power consumptions more reduced than that in the photographable state, and different in the electric power consumptions, and is provided with a notification part 25 for displaying the operation state under a current operation condition out of the operation states. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a radiographic image detector and a radiographic image capturing system, and more particularly to a radiographic image detector and a radiographic image capturing system for capturing a radiographic image typified by an X-ray image.

  Conventionally, in medical diagnosis, radiation images obtained by irradiating a subject with radiation such as X-rays and detecting the intensity distribution of the radiation transmitted through the subject have been widely used. At this time, a radiographic imaging apparatus using an FPD (Flat Panel Detector) that detects radiation, converts it into electrical energy, and detects it as radiographic image information has been proposed.

In recent years, a cassette type FPD in which the FPD is accommodated in a cassette has been developed for the purpose of improving the transportability and handling of the FPD (see, for example, Patent Document 1 and Patent Document 2). In particular, in order to make use of the transportability of the cassette type FPD, a cassette type FPD that communicates wirelessly with a console that controls the cassette type FPD has been proposed.
JP-A-6-342099 JP 2004-180931 A

By the way, even if there is a conventional FPD that displays captured radiographic image information on the console, there is no configuration that displays the operation state, and is the FPD used for imaging available for imaging? , Could not check its operating state.
For this reason, the radiographer who is an operator performs imaging in order using the FPD arranged in each imaging room for each imaging room, and is not used for imaging in other imaging rooms when the FPD is damaged. If the FPD is used as a substitute and the imaging work continues, even if there is an FPD that is not used in another imaging room, the radiologist cannot grasp the existence, and the work to find the FPD to substitute is not It was a very difficult task, and it was not possible to proceed with photography efficiently. This is very inconvenient for the patient, and if imaging is performed using an FPD that does not operate normally, re-imaging is forced and unnecessary exposure is increased. End up.

  An object of the present invention is to improve the operability during photographing.

The invention according to claim 1
A cassette type radiation image detector for detecting image radiation to acquire image information,
As an operation state, it has a radiographable state in which radiation can be detected, and a plurality of radiographing standby states with lower power consumption and different power consumption than the radiographable state,
An informing unit for displaying which one of the operating states is present is provided.

According to invention of Claim 1, it is a cassette type | mold radiographic image detector which acquires the image information by detecting the irradiated radiation,
As an operation state, it has a radiographable state in which radiation can be detected, and a plurality of radiographing standby states with lower power consumption and different power consumption than the radiographable state,
Since the notification part which displays which operation state is among the said operation states is provided, a display part can display the operation state of a cassette type | mold radiographic image detector.

The invention according to claim 2 is the cassette type radiation image detector according to claim 1,
The notification unit is provided on a surface excluding a surface irradiated with radiation and a surface opposite to the surface irradiated with the radiation.

  According to a second aspect of the present invention, the notification unit is provided on a surface excluding a surface irradiated with radiation and a surface opposite to the surface irradiated with the radiation. Of the surfaces of the cassette type radiation image detector, the surfaces that are susceptible to radiation are the surface irradiated with radiation and the surface opposite to the surface irradiated with the radiation, and no display unit is provided on this surface. Thus, it is possible to make the display unit less susceptible to radiation.

  Invention of Claim 3 is a radiographic imaging system provided with the cassette type radiographic image detector of Claim 1 or Claim 2, and the console which controls the said cassette type radiographic image detector, To do.

  According to invention of Claim 3, since it is a radiographic imaging system provided with the cassette type radiographic image detector of Claim 1 or Claim 2, and the console which controls the said cassette type radiographic image detector, A radiographic imaging system for obtaining radiographic image information can be constructed by controlling the cassette type radiographic image detector according to claim 1 or 2 by a console.

The invention according to claim 4 is the radiographic imaging system according to claim 3,
The console includes a display unit that displays which one of the operation states is in operation.

  According to invention of Claim 4, since the said console is provided with the display part which displays which operation state among the said operation states, the operation state of a cassette type radiographic image detector is displayed on a console. Can be made.

Invention of Claim 5 is set in the radiographic imaging system of Claim 4,
A plurality of cassette-type radiation image detectors are provided, and the display unit displays operating states of the plurality of cassette-type radiation image detectors.

  According to the fifth aspect of the present invention, a plurality of cassette-type radiographic image detectors are provided, and the display unit displays an operation state of the plurality of cassette-type radiographic image detectors. The operating state of the type radiation image detector can be displayed.

The invention according to claim 6 is the radiographic image capturing system according to claim 3 or 4,
A plurality of cassette type radiographic image detectors are provided, and a dedicated controller for displaying an operation state of the plurality of cassette type radiographic image detectors is provided.

  According to the invention of claim 6, the plurality of cassette-type radiographic image detectors are provided, and the dedicated controller for displaying the operation state of the plurality of cassette-type radiographic image detectors is provided. The operation state of a plurality of cassette type radiation image detectors can be displayed.

  According to the first aspect of the present invention, since the display unit can display the operation state of the cassette type radiation image detector, the operator can know the operation state of the cassette type radiation image detector, and the radiation Since it is possible to immediately check whether the image detector is ready to be used for shooting, it is possible to improve the operability during shooting.

  According to the second aspect of the present invention, since the display unit of the cassette type radiation image detector can be made less susceptible to radiation, it can be prevented that the display unit is irradiated with radiation and deteriorated.

  According to the third aspect of the present invention, since the cassette type radiographic image detector according to the first or second aspect can be controlled by the console and a radiographic image capturing system for obtaining radiographic image information can be constructed. It is possible to provide a radiographic imaging system that can display its own operating state on an image detector and improve operability during imaging.

  According to the fourth aspect of the present invention, since the operation state of the cassette type radiation image detector can be displayed on the console, the operator can know the operation state of the cassette type radiation image detector on the console. The operability during shooting can be improved.

  According to the fifth aspect of the present invention, since the operation states of the plurality of cassette type radiation image detectors can be displayed on the console, the operator can display the operation states of the plurality of cassette type radiation image detectors on the console. It is possible to know and immediately check which radiographic image detector among the multiple radiographic image detectors can be used immediately for imaging, thereby improving operability during imaging. be able to.

  According to the sixth aspect of the present invention, since the operation states of the plurality of cassette type radiation image detectors can be displayed on the dedicated controller, the operator can operate the plurality of cassette type radiation image detectors on the dedicated controller. It is possible to know the operating status, and it is possible to immediately check which radiographic image detector among the multiple radiographic image detectors is ready to be used for imaging. Can be improved.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. However, the present invention is not limited to the illustrated example.

  FIG. 1 is a diagram showing a schematic configuration of an embodiment of a radiographic imaging system to which a radiographic image detector according to the present invention is applied.

  The radiographic image capturing system 1 according to the present embodiment is a system that is applied in, for example, radiographic image capturing performed in a hospital. As shown in FIG. The radiation irradiation operation device 3 that performs operations related to radiographic imaging, the base station 4 for performing communication by a wireless communication system such as a wireless local area network (LAN), and the radiation image detector 5 are controlled and the radiation image A console 6 that performs image processing and the like of the radiation image detected by the detector 5 is connected through a network 7. A radiation irradiating device 10 is connected to the radiation irradiating operation device 3 via a cable 8 to irradiate the patient as the subject 9 with radiation and take a radiation image. The radiation irradiation device 10 and the radiation image detector 5 are installed one by one, for example, in one imaging room 11. The radiation irradiation device 10 is operated by the radiation irradiation operation device 3, and a radiation image is detected by the radiation image detector 5. Radiation image information can be obtained by detection. A plurality of radiation image detectors 5 may be provided in one imaging room 11.

  Here, the network 7 may be a dedicated communication line for the system, but is an existing line such as Ethernet (registered trademark) for reasons such as a low degree of freedom in the system configuration. Is preferred. In addition, two cassette type radiation image detectors 41 and 42 in other imaging rooms 40, a radiation irradiation operation device, and a console (none of which are shown) are connected to the network 7 via a base station 43. .

  The radiation irradiation operation device 3 is configured by an operation panel or the like, and operates the radiation irradiation device 10. For example, an input operation unit that inputs a signal such as imaging conditions, a display unit that displays information such as imaging conditions and various instructions, And the power supply part etc. (all are not shown) which supplies electric power with respect to the radiation irradiation apparatus 10 are comprised.

  The radiation irradiation apparatus 10 is disposed inside the imaging room 11 and has a radiation source 12, and radiation is generated when a tube voltage is applied to the radiation source 12. As the radiation source 12, for example, a radiation tube is used, and the radiation tube generates radiation by accelerating electrons generated by thermal excitation with a high voltage to collide with the cathode.

  The radiation image detector 5 detects radiation that has been irradiated from the radiation source 12 of the radiation irradiating apparatus 10 and has passed through the subject 9 to acquire a radiation image, and is irradiated from the radiation source 12 when performing imaging. It is arranged in the radiation range. In this embodiment, the radiation image detector 5 is disposed between the subject 9 and the bed 13 on which the subject 9 is placed. However, the position where the radiation image detector 5 is disposed is not limited to this. For example, a detector mounting opening (not shown) for mounting the radiation image detector 5 may be provided below the bed, and the radiation image detector 5 may be mounted in the detector mounting opening.

  The radiation image detector 5 is a radiation image detector that is a cassette-type flat panel detector. Hereinafter, the structure of the radiation image detector 5 will be described with reference to FIGS.

  As shown in FIG. 2, the radiation image detector 5 includes a casing 14 that protects the inside, and is configured to be portable as a cassette.

  An imaging panel 15 that converts irradiated radiation into an electrical signal is formed in layers inside the housing 14. A light emitting layer (not shown) that emits light according to the intensity of incident radiation is provided on the radiation irradiation side of the imaging panel 15.

  The light emitting layer is generally called a scintillator layer. For example, a phosphor is a main component, and based on incident radiation, an electromagnetic wave having a wavelength of 300 nm to 800 nm, that is, visible light to ultraviolet light to infrared light. It is designed to output electromagnetic waves (light).

The phosphor used in the light emitting layer is, for example, a material having CaWO ₄ or the like as a base material, or a luminescent center substance activated in a base material such as CsI: Tl, Gd ₂ O ₂ S: Tb, or ZnS: Ag. Things can be used. Further, when the rare earth element is M, a phosphor represented by a general formula of (Gd, M, Eu) ₂ O ₃ can be used. In particular, CsI: Tl and Gd ₂ O ₂ S: Tb are preferable because of high radiation absorption and light emission efficiency. By using these, high-quality images with low noise can be obtained.

  The electromagnetic wave (light) output from the light emitting layer is converted into electric energy and accumulated on the surface opposite to the surface on which the radiation of the light emitting layer is irradiated, and an image signal based on the accumulated electric energy is stored. A signal detection unit 232 that performs output is formed.

  Here, the circuit configuration of the imaging panel 15 will be described. FIG. 3 is an equivalent circuit diagram of the photoelectric conversion unit for one pixel constituting the signal detection unit 232.

  As shown in FIG. 3, the configuration of the photoelectric conversion unit for one pixel includes a photodiode 233 and a thin film transistor (hereinafter referred to as TFT 234) that extracts electrical energy accumulated in the photodiode 233 as an electrical signal by switching. . The extracted electric signal is amplified by an amplifier 238 to a level that can be detected by the signal reading circuit 17. The amplifier 238 is connected to a reset circuit (not shown) composed of a TFT 234 and a capacitor, and a reset operation for resetting the accumulated electrical signal is performed by switching on the TFT 234. The photodiode 233 may simply be a photodiode having a regulation capacitance, or may include an additional capacitor in parallel so as to improve the dynamic range of the photodiode 233 and the photoelectric conversion unit.

FIG. 4 is an equivalent circuit diagram in which such photoelectric conversion units are two-dimensionally arranged. Between the pixels, the scanning lines Ll and the signal lines Lr are arranged so as to be orthogonal to each other. A TFT 234 is connected to the photodiode 233 described above, and one end of the photodiode 233 on the side to which the TFT 234 is connected is connected to the signal line Lr. On the other hand, the other end of the photodiode 233 is connected to one end of an adjacent photodiode 233 arranged in each row, and is connected to a bias power source 239 through a common bias line Lb. One end of the bias power source 239 is connected to the control unit 27, and a voltage is applied to the photodiode 233 through the bias line Lb according to an instruction from the control unit 27. The TFTs 234 arranged in each row are connected to a common scanning line Ll, and the scanning line Ll is connected to the control unit 27 via the scanning drive circuit 16. Similarly, the photodiodes 233 arranged in each column are connected to the signal readout circuit 17 connected to the common signal line Lr and controlled by the control unit 27. In the signal readout circuit 17, an amplifier 238, a sample hold circuit 240, an analog multiplexer 241, and an A / D converter 242 are arranged on a common signal line Lr in order from the imaging panel 23.
Note that the TFT 234 may be either an inorganic semiconductor type used in a liquid crystal display or the like, or an organic semiconductor type.
Moreover, although the case where the photodiode 233 as a photoelectric conversion element was used was illustrated in the present embodiment, a solid-state imaging element other than the photodiode may be used as the photoelectric conversion element.

  As shown in FIG. 2, the side of the signal detection unit 232 sends a pulse to each photoelectric conversion element to scan and drive each photoelectric conversion element, and the photoelectric conversion elements are stored in each photoelectric conversion element. A signal readout circuit 17 for reading out electrical energy is arranged.

  As shown in FIGS. 2 and 5, the radiation image detector 5 includes an image storage unit 18 including a rewritable read-only memory such as a flash memory or a RAM, and the image storage unit 18 includes the imaging panel 15. The image signal output from is stored. The image storage unit 18 may be a built-in memory or a removable memory such as a memory card.

  The radiation image detector 5 includes a plurality of drive units (scanning drive circuit 16, signal readout circuit 17, image storage unit 18, communication unit 24 (described later), and indicator 25 (described later) constituting the radiation image detector 5. A built-in power source 19 is provided as a power supply source for supplying power to the input operation unit 26 (described later, the imaging panel 15 and the like). The built-in power source 19 is, for example, a battery such as a manganese battery, an alkaline battery, an alkaline button battery, a lithium battery, a silver oxide battery, an air zinc battery, a nickel cadmium battery, a mercury battery, a lead battery, or a nickel battery, a nickel metal hydride battery, It is composed of rechargeable rechargeable batteries such as lithium ion batteries, small sealed lead batteries, lead storage batteries, fuel cells and solar cells.

  A terminal 22 for charging is formed at one end of the housing 14. For example, as shown in FIG. 1, by attaching the radiation image detector 5 to a charging device 23 such as a cradle, the charging device 23 side. The terminal (not shown) and the housing-side terminal 22 are connected to charge the built-in power supply 19. The built-in power supply 19 can be replaced by being pulled out from the side of the housing 14, for example.

  Further, the radiation image detector 5 is provided with a communication unit 24 (see FIG. 5) that transmits and receives various signals to and from an external device such as the console 6. For example, the communication unit 24 transfers an image signal output from the imaging panel 15 to the console 6 and receives a shooting reservation instruction signal, a shooting instruction signal, a standby instruction signal, and the like transmitted from the console 6 or the like. ing.

In addition, a radiation image such as an operating state of the radiation image detector 5 described later and a charging state of the built-in power source 19 is provided on one end of the surface of the housing 14 excluding the surface irradiated with radiation and the opposite surface. An indicator (notification unit) 25 for displaying and notifying the operation status of each drive unit of the detector 5 is provided so that the operator can visually confirm the operation state and the like of the radiation image detector 5. It has become.
By arranging the indicator 25 at such a position, the indicator 25 can be hardly affected by radiation, and the indicator 25 can be prevented from being deteriorated by being irradiated with radiation. In addition, the radiation image detector 5 is often stored with the surface irradiated with radiation on the surface irradiated with the radiation of the other radiation image detector or the opposite surface. By disposing at the position, it is possible to easily distinguish the operation state of each radiation image detector during storage.

Here, the operation state of the radiation image detector 5 will be described.
The operation state of the radiation image detector 5 includes a photographing ready state in which a photographing operation can be performed and a photographing standby state in which power consumption is lower than that in the photographing capable state.

  The imaging enabled state is a state in which power is supplied to a drive unit necessary for performing an imaging operation, and is a state in which power is supplied to at least a drive unit required to detect radiation. For example, power is supplied to driving units such as the scanning driving circuit 16, the signal reading circuit 17, the photodiode 233, the TFT 234, the image storage unit 18, and the communication unit 24, and image information that is a series of photographing operations. It is possible to perform various operations such as initialization, accumulation of electric energy generated according to irradiated radiation, reading of electric signals, and transfer of image signals. In the initialization, the reset operation and the idle reading operation in the imaging panel 15 are performed.

  In the present embodiment, the shooting standby state includes a first shooting standby mode that consumes less power than the shooting enabled state, and a second shooting standby mode that consumes less power than the first shooting standby mode.

  The first photographing standby mode is a state in which power is supplied to the drive unit excluding the signal readout circuit 17 that can be quickly started to a photographing ready state, and a state in which photographing can be performed immediately. The camera is in a shooting standby state. Specifically, power is supplied to the scanning drive circuit 16, the photodiode 233, the TFT 234, the image storage unit 18, the communication unit 24, and the indicator 25. On the other hand, the second shooting standby mode is a state in which power is supplied to a minimum drive unit, for example, a communication unit during shooting standby, and shooting cannot be performed immediately, but power consumption is very high. This is a shooting standby state in a low state.

  As shown in FIG. 5, the radiation image detector 5 includes a control device 28 having a control unit 27 configured by, for example, a general-purpose CPU, ROM, RAM, or the like (all not shown). The control unit 27 reads out a predetermined program stored in the ROM, develops it in the work area of the RAM, and the CPU executes various processes according to the program.

The control unit 27 is configured to receive a signal received by the communication unit 24, and the control unit 27 controls each drive unit based on the signal received by the communication unit 24. It has become. For example, in the control unit 27, when the communication unit 24 receives an imaging instruction signal, an imaging reservation instruction signal, and a standby instruction signal, the communication unit 24 receives the radiographic image detector 5 described above based on the received instruction signal. The operation state is switched.
Specifically, in the first shooting standby mode in the shooting standby state, when a shooting instruction signal is input from the console 6 to the communication unit 24, the first shooting standby mode is switched to the shooting ready state, and the console 6 is configured to switch from the first photographing standby mode to the second photographing standby mode when a standby instruction signal from 6 is input. In the second shooting standby mode, when a shooting reservation instruction signal is input from the console 6 to the communication unit 24, the second shooting standby mode is switched to the first shooting standby mode.

  Further, the control unit 27 causes the indicator 25 to display which of the above-described operation states the active radiation image detector 5 is in as the operation state of the above-described radiation image detector 5. Yes.

  The control unit 27 drives the scanning drive circuit 16 to send a pulse to each photoelectric conversion element to scan and drive each photoelectric conversion element. Then, the image signal read out by the signal reading circuit 17 that reads out the electric energy accumulated in each photoelectric conversion element is sent to the control unit 27. The control unit 27 stores the sent image signal in the image storage unit 18. Further, the image signal stored in the image storage unit 18 is appropriately sent to the console 6 via the communication unit 24 as operation state information.

  Next, as shown in FIG. 6, the console 6 includes a control device 30 having a control unit 29 composed of, for example, a general-purpose CPU, ROM, RAM, or the like (all not shown). 29 reads out a predetermined program stored in the ROM, expands it in the work area of the RAM, and the CPU executes various processes according to the program.

  In addition, the console 6 transmits and receives various signals to and from external devices such as an input operation unit 31 for inputting various instructions and the like, a display unit 32 for displaying images and various messages, and the radiation image detector 5. The communication part 33 etc. to perform are provided.

  The input operation unit 31 includes, for example, an operation panel, a keyboard, a mouse, and the like, and outputs, to the control unit 29, a key press signal pressed by the operation panel or the keyboard or an operation signal from the mouse as an input signal. It is supposed to be.

  The display unit 32 includes, for example, a CRT (Cathode Ray Tube), an LCD (Liquid Crystal Display), and the like, and displays various screens according to instructions of a display signal output from the control unit 29. ing.

  As shown in FIG. 7A, in the display unit 32, an imaging list 46 on which information of a patient to be imaged is placed, and information 47 of a patient to be imaged next selected from the imaging list 46 (here, (Name and imaging region), ID number 48 of the radiation image detector used for imaging for the patient, and information 49, 50, 51 of the radiation image detector on the network 7 are displayed. Here, the radiation image detector information 49, 50, 51 on the network 7 is information corresponding to the radiation image detectors 5, 41, 42, respectively. Information such as a site, sex, remarks, and the like are placed, and further, an ID number of a radiation image detector used for photographing a patient on a photographing list set in advance may be placed.

  Information 49, 50, 51 of the radiation image detector on the network 7 is individually displayed for each radiation image detector. As shown in FIG. 7B, the radiographic image detector ID number, imaging size, sensitivity, and operating state are displayed as the radiographic image detector 5 information. Here, the operation state of the radiation image detector 5 can be distinguished by lighting of two kinds of lamps of green and red, and when the green lamp 44 is lit, the first standby mode is indicated, and red When the lamp 45 is turned on, the second standby mode is indicated. In addition, when the green lamp 44 and the red lamp 45 are blinking, it is indicating that the transition to the operation state indicated by the blinking lamp color is in progress (during the transition). The information 50 and 51 of the other radiation image detectors on the network 7 is also displayed as the same information as the information 49 of the radiation image detector, and the radiation image detection corresponding to the radiation image detectors 5, 41 and 42 is performed. The device ID numbers are displayed as “FPD1, FPD2, FPD3”, respectively.

  The communication unit 33 communicates with other external devices on the network 7 such as the radiographic image detector 5 and the server 2 via the base station 4 by radio communication methods such as wireless LAN. Various types of information such as radiation image information are communicated.

The control unit 29 is configured to send a signal input from the input operation unit 31 and information received from the outside via the communication unit 33, and perform predetermined processing on the transmitted signal. It is like that.
For example, the radiographic image information detected by the radiographic image detector 5 is transmitted to the control unit 29, and the control unit 29 performs predetermined image processing based on the radiographic image information so that a doctor or the like desires. Radiation images to be obtained. The control unit 29 is configured to cause the communication unit 33 to transmit a shooting reservation instruction signal and a shooting instruction signal, respectively, when a shooting reservation instruction and a shooting instruction are input through the input operation unit 31.

  The control unit 29 is configured to display a radiation image, a thumbnail image, various information input from the input operation unit 31, and the like on the display unit 32, and the radiation image detector received by the communication unit 33. 5 is displayed on the display unit 32.

  Next, the operation of the radiation image capturing system 1 to which the radiation image detector 5 according to the present embodiment is applied will be described.

  Normally, in a state where an imaging reservation instruction is not input to the radiation image detector 5, the control unit 27 of the radiation image detector 5 performs a plurality of driving operations so as to enter the second imaging standby mode in order to reduce power consumption. The operating status of the department is controlled. Then, the control unit 27 causes the indicator 25 to display that it is in the second imaging standby mode, and transmits the operation state information of the radiation image detector 5 to the console 6 via the communication unit 24. On the other hand, the control unit 29 of the console 6 receives the operation state information of the radiation image detector 5 via the communication unit 33, and displays the operation state of the radiation image detector 5 on the display unit 32, that is, red. The lamp 45 is turned on.

  Thereafter, on the console 6, the operator 47 selects and registers the information 47 of the patient to be imaged from the imaging list 46 via the input operation unit 31, and the radiographic image detector information 49, 50, 50 on the network 7. When the radiation image detector 5 is selected from among 51 as a radiation image detector used for imaging, the ID number 48 of the selected radiation image detector 5 is displayed. Then, the control unit 29 of the console 6 transmits an imaging reservation instruction signal to the radiation image detector 5 via the communication unit 33.

  Thereafter, when the radiographic image detector 5 receives an imaging reservation instruction signal via the communication unit 24, the control unit 27 switches the operation state of the radiographic image detector 5 to the first imaging standby mode, and the indicator 25 1 is displayed in the shooting standby mode.

  On the other hand, the console 6 always receives the operation state information of the radiation image detector 5 via the communication unit 33, and the operation state of the radiation image detector 5 changes from the second imaging standby mode to the first imaging standby state. During the transition to, the control unit 29 displays the operation state of the radiation image detector 5 on the display unit 32, that is, blinks the green lamp 44. Thereafter, when the switching of the radiation image detector 5 to the first imaging standby state is completed, the green lamp 44 is turned on.

  Thereafter, the patient is set on the bed 13, and the operator confirms that the green lamp 44 of the radiation image detector 5 used for imaging is lit on the display unit 32 of the console 6, and then the input operation unit 31. Use to input shooting instructions. Then, the control unit 29 transmits a shooting instruction signal via the communication unit 33.

  Thereafter, when the radiographic image detector 5 receives an imaging instruction signal via the communication unit 24, the control unit 27 switches the operation state of the radiographic image detector 5 to the imaging enabled state and the indicator 25 is in an imaging enabled state. After displaying the message, a photographing operation is performed.

When the imaging operation is completed, the control unit 27 of the radiation image detector 5 switches the operation state to the first imaging standby mode, and displays on the indicator 25 that the first imaging standby mode is in effect.
At this time, the console 6 receives the operation state information of the radiation image detector 5 via the communication unit 33, and the operation state of the radiation image detector 5 transits from the imaging enabled state to the first imaging standby mode. During this time, the control unit 29 displays the operation state of the radiation image detector 5 on the display unit 32, that is, blinks the green lamp 44. Thereafter, when the switching of the radiation image detector 5 to the first imaging standby mode is completed, the green lamp 44 is turned on.

Thereafter, the control unit 27 of the radiation image detector 5 detects the reception of the imaging reservation instruction signal via the communication unit 24 for a predetermined time, and during that time, when the imaging reservation instruction is input to the communication unit 24, The operation state of the image detector 5 is switched again to the photographing enabled state, and the photographing operation is performed.
On the other hand, when an imaging reservation instruction is not input to the communication unit 24, the control unit 27 switches the operation state of the radiation image detector 5 to the second imaging standby mode and informs the indicator 25 that the imaging imaging instruction is in the first imaging standby mode. Display.

  At this time, the console 6 receives the operation state information of the radiation image detector 5 via the communication unit 33, and the operation state of the radiation image detector 5 changes from the first imaging standby mode to the second imaging standby mode. During the transition to, the control unit 29 displays the operating state of the radiation image detector 5 on the display unit 32, that is, blinks the red lamp 45. Thereafter, when the switching of the radiation image detector 5 to the second imaging standby mode is completed, the red lamp 45 is turned on.

  As described above, according to the present embodiment, the radiation image detector 5 displays the operation state of the radiation image detector 5 on the indicator 25 and the operator can confirm the operation state of the radiation image detector 5. The person can confirm the operation state with the radiation image detector 5 itself, and the operability at the time of imaging can be improved.

  At that time, since the indicator 25 is provided at one end of the surface excluding the surface irradiated with radiation and the surface opposite to the surface, it is possible to prevent the indicator 25 from being irradiated with radiation and being deteriorated.

  In the console 6, the operation state of the radiation image detectors 5, 41, and 42 on the network 7 is displayed on the display unit 32, and the operator selects the radiation image detectors 5, 41, and 42 on the network 7, The radiation image detector that can be used for imaging can be checked at a glance, so that a radiation image detector suitable for the imaging situation can be quickly selected and used for imaging, further improving the operability during imaging. Can be improved.

  In addition, it can prevent accidental imaging using a radiological image detector that is not ready for imaging, such as when it does not operate normally, reducing the frequency of re-imaging and preventing excessive exposure to patients. can do.

  Since a plurality of modes (first and second imaging standby modes) with different power consumption are provided as imaging standby states, the radiographic image detector is set to the most suitable state according to the usage status and the like. Therefore, efficient shooting can be performed while reducing wasteful power consumption.

  In particular, when the shooting instruction is not input to the control unit 27, the battery has a little remaining power because the mode has the lowest power consumption (second shooting standby mode) among the plurality of shooting standby modes. It is possible to reduce power consumption as much as possible.

Of course, the present invention is not limited to the above-described embodiment and can be modified as appropriate.
For example, in the present embodiment, the operation state of the radiation image detectors 5, 41, 42 on the network 7 is displayed on one console, and the operator operates the radiation image detectors 5, 41, 42 on the network 7. Among them, the radiological image detector that can be used for imaging was confirmed, but a dedicated controller such as a PC for displaying the operation state of the radiographic image detectors 5, 41, and 42 on the network 7 is provided and displayed on the dedicated controller. By doing so, it is possible to make the operator confirm. Further, the dedicated controller may supervise a plurality of consoles arranged on the network 7. Alternatively, the radiation image detector 5 is provided with an input operation unit, and by operating this input operation unit, the display screen of the display unit is switched, and the operation state of the radiation image detectors 5, 41, 42 on the network 7 is changed. It is good also as a structure which is displayed.

  In the present embodiment, the communication unit 24 of the radiation image detector 5 is exemplified and described as an input unit for inputting an instruction for switching the operation state of the activated radiation image detector 5. It is also possible to provide an input operation unit or sensor in the detector 5 and use the input operation unit or sensor as an input unit. An example of the input operation unit is a mechanical switch. Examples of the sensor include a contact sensor and an acceleration sensor. An external device such as a cradle is provided to detect contact and non-contact of the radiation image detector 5 with the external device, or to detect a radiation image from the external device. The operation state of the radiation image detector 5 may be switched by detecting a change in acceleration of the radiation image detector 5 when the device 5 is removed and moved.

  In addition, the instruction for switching the operation state of the radiation image detector 5 is not limited to an input by a signal transmitted from the console 6, but the host computer that controls the radiation image detector 5 and the console 6, the radiation source 12, etc. on the network 7. A configuration may be adopted in which the control unit 27 is input from another external device.

  In the present embodiment, two types of modes can be selected as the shooting standby state. However, the shooting standby mode is not limited to the two types illustrated here. In the shooting standby mode in which the power supply is stopped only for the photodiode 233 and the TFT 234 having the power supply, the power supply is stopped for all but the image storage unit 18 and the communication unit 24. Only a time-consuming photodiode 233 and TFT 234 may be able to select a plurality of types of modes such as a photographing standby mode in which power supply is started earlier than other driving units. Further, only one of the two shooting standby modes illustrated in the present embodiment may be provided.

It is a figure showing the schematic structure which illustrates one embodiment of a radiographic imaging system concerning the present invention. It is a perspective view which shows the principal part structure of the radiographic image detector which concerns on this invention. FIG. 3 is an equivalent circuit diagram of a photoelectric conversion unit for one pixel constituting a photoelectric conversion layer provided in the radiation image detector of FIG. 2. FIG. 4 is an equivalent circuit diagram in which the photoelectric conversion units in FIG. 3 are two-dimensionally arranged. It is a block diagram which shows the principal part structure of the radiographic image detector which concerns on this invention. It is a block diagram which shows the principal part structure of the console which comprises the radiographic imaging system of FIG. Fig.7 (a) is a figure which shows schematic structure of the console of FIG. 6, FIG.7 (b) displayed the information of a specific radiographic image detector among the display screens displayed by the display part. It is.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Radiographic imaging system 2 Server 3 Radiation irradiation operation apparatus 4 Base station 5, 41, 42 Radiation image detector 6 Console 7 Network 10 Radiation irradiation apparatus 16 Scan drive circuit 17 Signal read-out circuit 18 Image memory | storage part 19 Built-in power supply 23 For charge Device 24 Communication unit (Radiation image detector)
25 Indicator 26 Input operation unit 27 Control unit (radiation image detector)
29 Control unit (console)
32 Display unit 33 Communication unit (console)

Claims (6)

A cassette-type radiation image detector that detects irradiated radiation and obtains image information,
As an operation state, it has a radiographable state in which radiation can be detected and a plurality of radiographing standby states in which the power consumption is less than that in the radiographable state and the power consumption is different.
A cassette type radiation image detector, comprising: a notification unit that displays which of the operation states is in operation.   The cassette type radiation image detector according to claim 1, wherein the notification unit is provided on a surface excluding a surface irradiated with radiation and a surface opposite to the surface irradiated with the radiation. .   A radiographic imaging system comprising the cassette type radiographic image detector according to claim 1 and a console for controlling the cassette type radiographic image detector.   The radiographic imaging system according to claim 3, wherein the console includes a display unit that displays which of the operating states the cassette type radiographic image detector is in.   The radiographic image capturing system according to claim 4, further comprising a plurality of cassette type radiographic image detectors, wherein the display unit displays operation states of the plurality of cassette type radiographic image detectors.   5. The radiographic imaging system according to claim 3, comprising a plurality of cassette-type radiographic image detectors, and a dedicated controller that displays an operation state of the plurality of cassette-type radiographic image detectors. .

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