JP2009048172A - Cassette - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily and reliably view display unit for displaying subject information in a desired direction by an operator. <P>SOLUTION: A radiation detecting cassette 24 includes a casing 34 having first through fourth display units 56a through 56d mounted on respective side walls thereof 38a through 38d for displaying ID information of a patient 14, etc. The casing 34 also has first detectors 58 for detecting obstacles facing the first through fourth display units 56a through 56d and second detectors 60 for detecting loads applied to the casing near the first through fourth display units 56a through 56d. Based on detected results from the first and second detectors 58 and 60, at least one of the first through fourth display units 56a through 56d is selected to display the ID information of a patient 14, etc. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a cassette that houses a radiation conversion panel that converts radiation transmitted through a subject into radiation image information.

  2. Description of the Related Art In the medical field, a radiation image capturing apparatus that irradiates a subject with radiation and guides the radiation transmitted through the subject to a radiation conversion panel to capture a radiation image is widely used. In this case, the radiation conversion panel is a conventional radiation film in which a radiation image is exposed and recorded, or radiation energy as a radiation image is accumulated in a phosphor and irradiated with excitation light, and the radiation image is then emitted as a stimulating light. A storage phosphor panel that can be taken out as is known. These radiation conversion panels are housed in a cassette having a casing, and a radiation film on which a radiation image is recorded is supplied to the developing device for development processing, or a stimulable phosphor panel is supplied to the reading device. By performing the reading process, a radiation image as a visible image is obtained.

  The cassette includes a grid capable of removing scattered radiation on the case plate of the housing, an operation unit including a power switch, and a display unit on which operation information, patient information, warnings, and the like by the operation unit are displayed. (For example, refer to Patent Document 1).

JP 2003-172783 A

  By the way, in the prior art which concerns on patent document 1, since the display part in a cassette is provided in the upper surface of the housing | casing which opposes a patient, when a patient leans on the upper part of the said cassette at the time of imaging | photography, The display unit will be covered by the patient, and it will be difficult for a doctor or the like to visually recognize the display unit, and there is a concern that it will hinder the confirmation of patient information and the like.

  In addition, when the direction of use of the housing is changed according to the affected area of the patient, the display unit may be arranged at a position that is not visible from the doctor or the like. Confirmation becomes difficult. On the other hand, when the cassette is installed in consideration of the position of the display unit, the usage direction of the cassette is restricted, and the efficiency of photographing work is reduced.

  The present invention has been made in consideration of the above-described various problems, and provides a cassette that allows an operator to reliably and easily visually recognize a display unit that displays subject information and the like from a desired direction. With the goal.

In order to achieve the above-mentioned object, the present invention detects a radiation irradiated from a radiation source and transmitted through a subject, and a housing that accommodates a radiation conversion panel that can be converted into radiation image information;
A plurality of display units provided on at least two side surfaces of the housing and capable of displaying subject information and the like;
A selection means for selecting a display part visible from outside among the plurality of display parts;
With
The subject information or the like is displayed on the display unit selected by the selection unit.

  According to the present invention, the housing in which the radiation conversion panel is housed is provided with a plurality of display units capable of displaying subject information and the like on at least two side surfaces, and a display that is visible from the outside among the plurality of display units. A part is selected via the selection means, and the subject information and the like are displayed on the display part. Therefore, when the cassette including the casing is installed between the subject and the base, the display unit is not displayed on the display unit covered by the subject and is visible from the outside without being covered by the subject. On the other hand, it can be selectively displayed. As a result, an operator such as a doctor can surely and easily visually recognize the display portion of the cassette, and accordingly, the subject information and the like displayed on the display portion can be confirmed with certainty.

  FIG. 1 is an explanatory diagram of an operating room 12 in which a radiographic image capturing system 10 including a cassette according to the present embodiment is installed. In the operating room 12, in addition to the radiographic imaging system 10, an operating table (table) 16 on which a patient (subject) 14 lies is placed, and various instruments used by a doctor 18 for surgery are placed. An instrument table 20 is disposed on the side of the operating table 16. The operating table 16 is provided with various devices necessary for surgery, such as an anesthesia machine, aspirator, electrocardiograph, and blood pressure monitor.

  The radiographic imaging system 10 includes an imaging device 22 that irradiates a patient 14 with radiation X having a dose according to imaging conditions, and a radiation detector (radiation conversion panel) 44 (described later) that detects the radiation X transmitted through the patient 14. ), A display device 26 for displaying a radiation image based on the radiation X detected by the radiation detector 44, the imaging device 22, the radiation detection cassette 24, and the display device 26 are controlled. Console 28. Signals are transmitted and received by wireless communication among the imaging device 22, the radiation detection cassette 24, the display device 26, and the console 28.

  The imaging device 22 is movably provided by a plurality of free arms 30, can be moved to a desired position according to the imaging region of the patient 14, and can be retracted to a position that does not interfere with the operation by the doctor 18. Similarly, the display device 26 is connected to the free arm 32 and can be moved to a position where the doctor 18 can easily confirm the captured radiographic image.

  2 to 4 are configuration diagrams of the radiation detection cassette 24. The radiation detection cassette 24 includes a casing (housing) 34 made of a material that transmits the radiation X. The casing 34 has a substantially rectangular shape and a set of flat plate portions 36a and 36b spaced apart from each other by a predetermined distance, and the flat plate portions 36a and 36b are connected to each other, and four wall portions 38a to 38d (substantially orthogonal to surround the four sides). A radiation detection cassette 24 that is hollow and includes a grid 42 that removes scattered radiation of the radiation X by the patient 14 from the irradiation surface 40 side of the casing 34 to which the radiation X is irradiated; A radiation detector 44 that detects the radiation X that has passed through 14 and a lead plate 46 that absorbs backscattered rays of the radiation X are arranged in this order. Note that the irradiation surface 40 of the casing 34 may be configured as a grid 42.

  The casing 34 includes a battery 48 that is a power source of the radiation detection cassette 24, a cassette control unit 50 that drives and controls the radiation detector 44 with electric power supplied from the battery 48, and the radiation detector 44. A transmitter / receiver 52 that transmits / receives a signal including information of the detected radiation X to / from the console 28 is housed, and ID information of the patient 14 is displayed on the walls 38a to 38d of the casing 34, for example. A possible ID display 54 is provided.

  The ID display unit 54 is composed of, for example, a liquid crystal display, and includes first to fourth displays 56a to 56d provided on the walls 38a to 38d, respectively, and is disposed so as to be exposed to the outside of the casing 34. The

  Further, in the casing 34, a first detector 58 that faces the walls 38a to 38d and can detect the presence or absence of an obstacle in the vicinity of the first to fourth displays 56a to 56d, and the first to fourth displays. The 2nd detection part 60 which can detect the load given near 56a-56d is provided.

  The first detection unit 58 includes, for example, a light emitting element (light emitting unit) 62 that emits emitted light and a light receiving element (light receiving unit) 64 that receives the emitted light, and are arranged so as to face in the same direction. The reflection type photosensor is used, and includes first to fourth photosensors 66a to 66d provided so as to correspond to the first to fourth displays 56a to 56d. The light emitting element 62 and the light receiving element 64 are arranged in a straight line in the vertical direction so as to be on the flat plate portions 36a, 36b side in the casing 34.

  The first to fourth photosensors 66 a to 66 d are provided so as to face the detection holes 68 opened to the sides of the first to fourth displays 56 a to 56 d in the wall portions 38 a to 38 d of the casing 34. And exposed outside the casing 34. That is, when the casing 34 is installed between the patient 14 and the operating table 16, the detection holes 68 are opened in the horizontal direction, and the light emitting element 62 and the light receiving element constituting the first to fourth photosensors 66a to 66d. 64 is arranged so as to face the side.

  The emitted light emitted from the light emitting element 62 is irradiated to the outside of the casing 34 through the detection hole 68, and when there is an obstacle at the position facing the detection hole 68, the light hits the obstacle and is reflected. The incoming light is received by the light receiving element 64, and detection signals associated therewith are output from the first to fourth photosensors 66 a to 66 d to the cassette control unit 50. On the other hand, when the light emitted from the light emitting element 62 is not detected by the light receiving element 64, it is confirmed that there is no obstacle at the position facing the detection hole 68. That is, whether or not there is an obstacle at the position facing the first to fourth displays 56a to 56d is detected by the first detection unit 58 including the first to fourth photosensors 66a to 66d.

  The second detection unit 60 includes, for example, a pressure sensor such as a strain gauge, and the first to fourth pressure sensors 70a to 70a provided in the wall portions 38a to 38d in the vicinity of the first to fourth displays 56a to 56d, respectively. 70d. In addition, you may make it provide this 1st-4th pressure sensor 70a-70d with respect to flat part 36a, 36b which becomes this wall part 38a-38d vicinity, without providing in each wall part 38a-38d.

  When the radiation detection cassette 24 is installed between the patient 14 and the operating table 16, loads applied from the patient 14 to the vicinity of the first to fourth displays 56a to 56d of the casing 34 are first to first. Each of the four pressure sensors 70a to 70d is detected, and the detection result is output to the cassette control unit 50 as a detection signal. Thereby, the load value given to the 1st-4th display 56a-56d vicinity is confirmed.

  The cassette control unit 50, the transceiver 52, the first and second detection units 58 and 60 are provided with a lead plate or the like on the irradiation surface 40 side of the casing 34 in order to avoid damage caused by irradiation with the radiation X. It is preferable to arrange them.

FIG. 5 is a circuit configuration block diagram of the radiation detector 44. The radiation detector 44 has a photoelectric conversion layer 72 made of a substance such as amorphous selenium (a-Se) that senses the radiation X and generates charges on an array of thin film transistor (TFT) 73. After the generated charge is stored in the storage capacitor 74, the TFT 73 is sequentially turned on for each row, and the charge is read as an image signal. In FIG. 5, only the connection relationship between one pixel 75 including the photoelectric conversion layer 72 and the storage capacitor 74 and one TFT 73 is shown, and the configuration of the other pixels 75 is omitted. Amorphous selenium must be used within a predetermined temperature range because its structure changes and its function decreases at high temperatures. Therefore, it is preferable to provide means for cooling the radiation detector 44 in the radiation detection cassette 24.

  A gate line 76 extending in parallel with the row direction and a signal line 78 extending in parallel with the column direction are connected to the TFT 73 connected to each pixel 75. Each gate line 76 is connected to a line scanning drive unit 80, and each signal line 78 is connected to a multiplexer 88 constituting a reading circuit.

  Control signals Von and Voff for controlling on / off of the TFTs 73 arranged in the row direction are supplied from the line scanning drive unit 80 to the gate line 76. In this case, the line scan driving unit 80 includes a plurality of switches SW1 for switching the gate lines 76, and an address decoder 82 for outputting a selection signal for selecting one of the switches SW1. An address signal is supplied from the cassette control unit 50 to the address decoder 82.

  Further, the charge held in the storage capacitor 74 of each pixel 75 flows out to the signal line 78 through the TFTs 73 arranged in the column direction. This charge is amplified by the amplifier 84. A multiplexer 88 is connected to the amplifier 84 via a sample and hold circuit 86. The multiplexer 88 includes a plurality of switches SW2 for switching the signal line 78 and an address decoder 90 for outputting a selection signal for selecting one of the switches SW2. An address signal is supplied to the address decoder 90 from the cassette control unit 50. An A / D converter 92 is connected to the multiplexer 88, and radiation image information converted into a digital signal by the A / D converter 92 is supplied to the cassette control unit 50.

  FIG. 6 is a configuration block diagram of the radiation image capturing system 10 including the imaging device 22, the radiation detection cassette 24, the display device 26, and the console 28.

  The imaging device 22 receives an imaging condition by radio communication from the imaging switch 94, a radiation source 96 that outputs radiation X, and the console 28, and transmits and receives an imaging completion signal by wireless communication to the console 28. 98 and a radiation source control unit 100 that controls the radiation source 96 based on the imaging start signal supplied from the imaging switch 94 and the imaging conditions supplied from the transceiver 98.

  The radiation detection cassette 24 accommodates a radiation detector 44, a battery 48, a cassette control unit 50, a transceiver 52, an ID display unit 54, and first and second detection units 58 and 60.

  The cassette controller 50 is detected by the radiation detector 44 and the address signal generator 102 that supplies an address signal to the address decoder 82 of the line scan driver 80 and the address decoder 90 of the multiplexer 88 that constitute the radiation detector 44. The detection results of the image memory 104 for storing the radiographic image information, the cassette ID memory 106 for storing the cassette ID information for specifying the radiation detection cassette 24, and the detection results of the first and second detection units 58 and 60 are as follows. A state determination unit (determination unit) 108 that determines a display that is input and is not covered by an obstacle such as the patient 14 in the first to fourth displays 56a to 56d constituting the ID display unit 54 and is visible from the outside. Is provided.

  In the first to fourth photosensors 66 a to 66 d constituting the first detection unit 58, the state determination unit 108 is configured to receive the light emitted from the light emitting element 62 by the light receiving element 64. It is determined that there is an obstacle at a position facing 58, that is, a position facing the first to fourth displays 56a to 56d provided in the vicinity of the first detection unit 58. On the other hand, when the first detection unit 58 does not receive the emitted light by the light receiving element 64, an obstacle is present at a position facing the first to fourth displays 56a to 56d provided in the vicinity of the first detection unit 58. Judge that there is no.

  Further, the state determination unit 108 determines the magnitudes of the load values in the first to fourth pressure sensors 70a to 70d based on the detection results of the first to fourth pressure sensors 70a to 70d constituting the second detection unit 60. In comparison, a part to which the load from the patient 14 is applied in the casing 34 is determined based on the arrangement location of the first to fourth pressure sensors 70a to 70d where a larger load value is detected.

  That is, since the weight of the patient 14 is given to the portion of the casing 34 in which the load is detected, it is determined that the patient 14 is lying on the upper portion of the casing 34. Since the weight of the patient 14 is not given to the part, it is determined that the patient 14 is not lying on the top.

  The transceiver 52 receives a transmission request signal from the console 28 by wireless communication, and wirelessly transmits the cassette ID information stored in the cassette ID memory 106 and the radiation image information stored in the image memory 104 to the console 28. Send by communication.

  The display device 26 displays a receiver 110 that receives radiation image information from the console 28, a display control unit 112 that performs display control of the received radiation image information, and the radiation image information processed by the display control unit 112. And a display unit 114.

  The console 28 is necessary for radiography of the radiographing device 22, the radiation detection cassette 24, and the display device 26, and a radio transmitter / receiver 116 that transmits and receives necessary information including radiographic image information and position information. An imaging condition management unit 118 that manages various imaging conditions, an image processing unit 120 that performs image processing on radiation image information transmitted from the radiation detection cassette 24, an image memory 122 that stores processed radiation image information, and an imaging target A patient information management unit 124 that manages patient information of the patient 14 and a cassette information management unit 126 that manages the cassette information transmitted from the radiation detection cassette 24. The console 28 may be installed outside the operating room 12 as long as it can transmit and receive signals to and from the imaging device 22, the radiation detection cassette 24, and the display device 26 by wireless communication.

  The radiographic imaging system 10 using the radiation detection cassette 24 of the present exemplary embodiment is basically configured as described above. Next, the operation thereof will be described.

  The radiographic image capturing system 10 is installed in the operating room 12 and is used, for example, when a radiographic image needs to be captured during surgery of the patient 14 by the doctor 18. Therefore, the patient information of the patient 14 to be imaged is registered in advance in the patient information management unit 124 of the console 28 prior to imaging. In addition, when an imaging region and an imaging method are determined in advance, these imaging conditions are registered in the imaging condition management unit 118 in advance. In the state where the above preparatory work is completed, the operation for the patient 14 is performed.

  When radiographing is performed during surgery, the doctor 18 or a radiographer in charge takes the radiation detection cassette 24 at a predetermined position between the patient 14 and the operating table 16 with the irradiation surface 40 facing the imaging device 22. Is installed.

  At this time, as shown in FIG. 7, emitted light is emitted from the light emitting elements 62 of the first to fourth photosensors 66 a to 66 d constituting the first detection unit 58, and the leg 14 a and the head 14 b of the patient 14. The light emitted from the second and fourth photosensors 66b and 66d facing each other is reflected by the patient 14 and then received by the light receiving element 64, and the first and third photosensors 66a not facing the patient 14 are received. , 66c is not reflected by the patient 14 and is not received by the light receiving element 64.

  At the same time, a large load is applied to the wall 38b provided with the second pressure sensor 70b by the leg 14a of the patient 14, and the fourth pressure sensor 70d is provided by the head 14b of the patient 14. A large load is also applied to the wall portion 38d, and the load is detected by the second and fourth pressure sensors 70b and 70d. Note that a relatively small load is applied to the wall portions 38a, 38c in which the first and third pressure sensors 70a, 70c are disposed because the patient 14 is not lying on the walls 38a, 38c. The load values detected by the three pressure sensors 70a and 70c are smaller than the load values detected by the second and fourth pressure sensors 70b and 70d.

  The detection signals are output from the second and fourth photosensors 66b and 66d to the state determination unit 108, and the detection signals are output from the first to fourth pressure sensors 70a to 70d in which the load is detected. It outputs to 108. In this state determination unit 108, the patient 14 lies in the vicinity of the second and fourth displays 56b, 56d based on detection signals from the first and second detection units 58, 60, and the patient 14 causes the second and second displays to lie down. It is determined that the front faces of the four displays 56b and 56d are covered, and conversely, since the patient 14 is not lying down in the vicinity of the first and third displays 56a and 56c, the first and third displays 56a and 56c. It is determined that the front of the patient is open without being covered by the patient 14.

  Based on this, patient information, imaging conditions, cassette information, and the like transmitted from the console 28 via the transceiver 116 are selected for the first and third displays 56a and 56c of the ID display unit 54 through the state determination unit 108. Output and displayed. That is, the state determination unit 108 is one of the first to fourth displays 56a to 56d that is not covered by the patient 14 based on the detection results of the first and second detection units 58 and 60 and is visible from the outside. It functions as a selection means for selectively outputting patient information and the like.

  Thereby, the doctor 18 and the radiographer can surely and easily confirm patient information, imaging conditions, cassette information, and the like through the first and third displays 56a and 56c not covered by the patient 14. In this case, since the output signal is not output from the state determination unit 108 to the second and fourth displays 56b and 56d, patient information and the like are displayed on the second and fourth displays 56b and 56d. It will not be done.

  As described above, after the doctor 18 or the like confirms the patient information selectively displayed on the ID display unit 54, the imaging device 22 is moved to a position facing the radiation detection cassette 24, and the imaging switch 94 is operated. Take a picture. The radiation source control unit 100 of the imaging apparatus 22 acquires the imaging conditions related to the imaging region of the patient 14 by wireless communication from the imaging condition management unit 118 of the console 28 via the transceivers 52 and 98, and acquires the acquired imaging conditions. By controlling the radiation source 96 according to the above, the patient 14 is irradiated with the radiation X having a predetermined dose.

  The radiation X transmitted through the patient 14 is irradiated with the radiation detector 44 after the scattered radiation is removed by the grid 42 of the radiation detection cassette 24, and is electrically applied by the photoelectric conversion layer 72 of each pixel 75 constituting the radiation detector 44. The signal is converted into a signal and held as a charge in the storage capacitor 74 (see FIG. 5). Next, the charge information, which is the radiation image information of the patient 14 held in each storage capacitor 74, is in accordance with the address signal supplied from the address signal generator 102 constituting the cassette controller 50 to the line scan driver 80 and the multiplexer 88. Read out.

  That is, the address decoder 82 of the line scan driver 80 outputs a selection signal according to the address signal supplied from the address signal generator 102, selects one of the switches SW1, and the TFT 73 connected to the corresponding gate line 76. A control signal Von is supplied to the gates of the two. On the other hand, the address decoder 90 of the multiplexer 88 outputs a selection signal in accordance with the address signal supplied from the address signal generation unit 102, sequentially switches the switch SW2, and is connected to the gate line 76 selected by the line scan driving unit 80. Radiation image information that is charge information held in the storage capacitor 74 of each pixel 75 is sequentially read out via a signal line 78.

  The radiation image information read from the storage capacitor 74 of each pixel 75 connected to the selected gate line 76 of each radiation detector 44 is amplified by each amplifier 84 and then sampled by the sample and hold circuit 86. The signal is supplied to the A / D converter 92 via the multiplexer 88 and converted into a digital signal. The radiographic image information converted into the digital signal is temporarily stored in the image memory 104 of the cassette control unit 50 and then transmitted to the console 28 by wireless communication via the transceiver 52.

  The radiographic image information transmitted to the console 28 is received by the transceiver 116 and subjected to predetermined image processing in the image processing unit 120 and then associated with the patient information of the patient 14 registered in the patient information management unit 124. Stored in the image memory 122.

  The radiographic image information subjected to the image processing is transmitted from the transceiver 116 to the display device 26. The display device 26 that has received the radiation image information by the receiver 110 controls the display unit 114 by the display control unit 112 to display the radiation image. The doctor 18 performs the operation while confirming the radiographic image displayed on the display unit 114.

  In this case, cables for transmitting and receiving signals are not connected between the radiation detection cassette 24 and the console 28, between the imaging device 22 and the console 28, and between the console 28 and the display device 26. Therefore, for example, these cables are not provided on the floor surface of the operating room 12, and there is no possibility of hindering the work of the doctor 18 or the like.

  In the present embodiment described above, the first detection unit 58 that includes the first to fourth photosensors 66a to 66d and can detect an obstacle facing the first to fourth displays 56a to 56d; Although the description has been given of the configuration including the second pressure sensor 70a to 70d and the second detection unit 60 that can detect the load applied to the first to fourth displays 56a to 56d at the same time, it is limited to this. Instead of this, only one of the first detection unit 58 and the second detection unit 60 may be provided.

  Moreover, after displaying patient information etc. with respect to all the 1st-4th displays 56a-56d which comprise the ID display part 54, based on the detection result detected by the 1st and 2nd detection part 58,60. Thus, only the display on the display determined to be covered by the patient 14 may be turned off.

  Furthermore, instead of the photo sensor, a light / dark sensor capable of detecting surrounding light / dark may be used for the first detection unit 58. In this case, it is determined that the vicinity of the first to fourth displays 56a to 56d is covered by the patient 14 when it is detected that the vicinity of the light / dark sensor has become dark.

  As described above, in the present embodiment, the casing 34 of the radiation detection cassette 24 in which the radiation detector 44 is housed has the first to fourth ID display portions 54 formed on the four wall portions 38a to 38d, respectively. Displays 56a to 56d are provided, and the plurality of first to fourth displays 56a to 56d are visually recognized from the outside by the state determination unit 108 based on the detection results of the first and second detection units 58 and 60. Patient information or the like can be selectively displayed only on one of the determined first to fourth displays 56a to 56d. As a result, the doctor 18 reliably and easily visually recognizes the ID display unit 54 via any one of the first to fourth displays 56a to 56d in which patient information is displayed and is not covered by the patient 14. Therefore, the patient information and the like can be confirmed with certainty.

  Further, by providing the radiation detection cassette 24 with the first detection unit 58 having the light emitting element 62 that emits the emitted light and the light receiving element 64 that receives the emitted light, the light receiving element 64 receives the emitted light. In this case, it can be confirmed that the patient 14 is facing one of the first to fourth displays 56a to 56d provided in the vicinity of the first detection unit 58, and the patient 14 is based on the detection result. It is possible to selectively display patient information or the like on a display that is not confronted.

  Furthermore, the radiation detection cassette 24 is detected by the second detection unit 60 by providing the radiation detection cassette 24 with a second detection unit 60 capable of detecting the load applied to the casing 34 in the vicinity of the first to fourth displays 56a to 56d. Based on the load value, it can be confirmed that the patient 14 is facing one of the first to fourth displays 56a to 56d, and accordingly, the display is selective to the display that the patient 14 is not facing. Patient information can be displayed on the screen.

  When the radiation detection cassette 24 is used in the operating room 12 or the like, there is a possibility that blood or other germs may adhere. Therefore, the radiation detection cassette 24 has a waterproof and airtight structure and is sterilized and washed as necessary, so that one radiation detection cassette 24 can be used repeatedly.

  The radiation detection cassette 24 is not limited to being used in the operating room 12, and can be applied to, for example, medical examinations and rounds in hospitals.

  Further, the wireless communication between the radiation detection cassette 24 and the external device may be performed by optical wireless communication using infrared rays or the like instead of normal communication using radio waves.

  It is more preferable to configure the radiation detection cassette 500 as shown in FIG.

  That is, in the radiation detection cassette 500, the guide line 504 serving as a reference for the imaging region and the imaging position is formed on the radiation irradiation surface side of the casing 502. Using this guide line 504, the subject is positioned with respect to the radiation detection cassette 500, and the radiation image information can be recorded in an appropriate imaging region by setting the radiation irradiation range.

  A display unit 506 for displaying various types of information related to the radiation detection cassette 500 is disposed in a portion outside the imaging region of the radiation detection cassette 500. The display unit 506 displays the ID information of the subject recorded in the radiation detection cassette 500, the number of times the radiation detection cassette 500 is used, the cumulative exposure dose, the state of charge of the battery 48 built in the radiation detection cassette 500 (remaining capacity) ), Radiographic image information imaging conditions, a positioning image of the subject with respect to the radiation detection cassette 500, and the like are displayed. In this case, for example, the engineer confirms the subject in accordance with the ID information displayed on the display unit 506, confirms in advance that the radiation detection cassette 500 is in a usable state, and based on the displayed positioning image. Thus, it is possible to position the desired imaging region of the subject on the radiation detection cassette 500 and to perform imaging of optimal radiation image information.

  Further, by forming the handle portion 508 in the radiation detection cassette 500, the radiation detection cassette 500 can be easily handled and carried.

  On the side of the radiation detection cassette 500, an AC adapter input terminal 510, a USB (Universal Serial Bus) terminal 512, and a card slot 516 for loading a memory card 514 are preferably provided.

  The input terminal 510 is connected to an AC adapter when the charging function of the battery 48 built in the radiation detection cassette 500 is deteriorated or when sufficient time cannot be secured for charging the battery 48. The radiation detection cassette 500 can be immediately put into a usable state by supplying power from.

  The USB terminal 512 or the card slot 516 can be used when the radiation detection cassette 500 cannot transmit and receive information by wireless communication with an external device such as the console 28. In other words, by connecting a cable to the USB terminal 512, information can be transmitted / received to / from an external device by wired communication. In addition, information can be transmitted and received by loading a memory card 514 into the card slot 516, recording necessary information on the memory card 514, and then removing the memory card 514 and loading it into an external device.

  Further, in the radiation detection cassette 500, first to third displays 56a to 56c are respectively formed on three wall portions 38a to 38c other than the portion having the handle portion 508, and the first to third displays 56a. A load applied to the vicinity of the first detection unit 517 including the first to third photosensors 66a to 66c and the vicinity of the first to third displays 56a to 56c. And a second detection unit 518 including first to third pressure sensors 70a to 70c.

  As shown in FIG. 9, it is preferable to place a cradle 519 that is loaded with a radiation detection cassette 24 and charges a built-in battery 48 at a required location in the operating room 12 or hospital. In this case, the cradle 519 transmits and receives necessary information to and from external devices such as the HIS, RIS, and console 28 using not only the charging of the battery 48 but also the wireless communication function or the wired communication function of the cradle 519. You may do it. The information to be transmitted and received can include radiation image information recorded in the radiation detection cassette 24 loaded in the cradle 519.

  In addition, a display unit 520 is provided in the cradle 519, and necessary information including the charge state of the loaded radiation detection cassette 24 and the radiation image information acquired from the radiation detection cassette 24 is displayed on the display unit 520. You may make it display. In addition, a plurality of cradles 519 are connected to the network, and the charging states of the radiation detection cassettes 24 loaded in the respective cradles 519 are collected via the network, and the location of the radiation detection cassettes 24 in a usable charging state is confirmed. It can also be configured to be able to.

  In addition, this invention is not limited to embodiment mentioned above, Of course, it can change freely in the range which does not deviate from the main point of this invention.

It is explanatory drawing of the operating room where the radiographic imaging system using the cassette which concerns on this Embodiment was installed. It is a partially cutaway external perspective view of a radiation detection cassette. It is a side view of the radiation detection cassette shown in FIG. It is a top view of the radiation detection cassette shown in FIG. It is a circuit block diagram of a radiation detector. 1 is a configuration block diagram of a radiographic image capturing system. It is an enlarged plan view which shows the state in which the radiation detection cassette of FIG. 1 was installed in the affected part of a patient. It is another block diagram of a radiation detection cassette. It is a block diagram of the cradle which charges a radiation cassette.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Radiographic imaging system 12 ... Operating room 14 ... Patient 16 ... Operating table 22 ... Imaging device 24, 500 ... Radiation detection cassette 26 ... Display device 28 ... Console 34, 502 ... Casing 38a-38d ... Wall part 44 ... Radiation detection Instrument 50 ... Cassette control unit 52, 98, 116 ... Transmitter / receiver 54 ... ID display unit 56a-56d ... First to fourth display 58, 517 ... First detection unit 60, 518 ... Second detection unit 66a-66d ... 1st-4th photosensor 70a-70d ... 1st-4th pressure sensor 108 ... state judgment part

Claims (5)

A housing that contains a radiation conversion panel that detects radiation that has been irradiated from a radiation source and transmitted through a subject, and that can be converted into radiation image information;
A plurality of display units provided on at least two side surfaces of the housing and capable of displaying subject information and the like;
A selection means for selecting a display part visible from outside among the plurality of display parts;
With
A cassette, wherein the subject information and the like are displayed on a display unit selected by the selection means. The cassette of claim 1,
The selection means includes a detection unit capable of detecting a state of the subject in the vicinity of the display unit;
Determination means for determining a display unit that does not face the subject among a plurality of display units based on a detection result by the detection unit;
With
The cassette is characterized in that a plurality of the detection units are provided corresponding to the plurality of display units. The cassette according to claim 2,
The detection unit includes a light emitting unit that emits emitted light and a light receiving unit that receives the emitted light, and the presence / absence of the subject facing the display unit according to a light receiving state of the emitted light by the light receiving unit A cassette characterized by comprising an optical sensor capable of detecting light. The cassette according to claim 2 or 3,
The cassette according to claim 1, wherein the detection unit includes a pressure sensor that detects a load applied to the vicinity of the display unit in the housing. In the cassette according to any one of claims 1 to 4,
The display unit is provided on a side surface of the casing that does not face the subject and the base when the casing is installed between the subject and the base on which the subject is placed. Cassette to do.

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