JP2009053662A - Cassette - Google Patents

Abstract

An object of the present invention is to facilitate installation between a subject and a table, to reduce the burden on the subject, to efficiently perform the installation work, and to reduce the size.
A casing 36 of a radiation detection cassette 24 is provided with a first flat plate portion 38 facing the patient 14 and a second flat plate portion 40 facing the operating table 16 spaced apart from each other by a predetermined distance. A radiation detector 52 is disposed between the flat plate portions 38 and 40, and first and second tapered portions 42 that gradually taper on both sides of the first and second flat plate portions 38 and 40, 44 is formed. In addition, the battery 62, the cassette control unit 64, and the transceiver 66 are accommodated in the first and second tapered portions 42, 44 via the radiation blocking members 60a, 60b.
[Selection] Figure 2

Description

  The present invention relates to a cassette containing a radiation conversion panel that detects radiation transmitted through a subject and converts it 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 supply a radiation film on which a radiographic image is recorded to a developing device to perform development processing, or supply a stimulable phosphor panel to a reading device to perform reading processing so that a visible image can be obtained. A radiographic image is obtained.

  On the other hand, in an operating room or the like, it is necessary to be able to immediately read out and display a radiation image from a radiation conversion panel after imaging in order to perform a quick and accurate treatment on a patient. Radiation detection using a solid-state detector that converts radiation directly into electrical signals, or converts radiation into visible light with a scintillator and then converts it into electrical signals to read out as a radiation conversion panel that can meet such demands A vessel has been developed.

  Such a radiation conversion panel is accommodated in a cassette together with wireless communication means and a battery, and irradiates X-rays from a radiation source facing the imaging surface of the radiation conversion panel (see, for example, Patent Document 1).

JP 2003-172783 A

  By the way, such a cassette is placed between a patient lying on a bed and the bed, for example, and is placed at a position corresponding to the affected area of the patient to perform imaging. However, generally, since the cassette is formed in a thin box shape and needs to be installed so as to be inserted between the patient and the bed, the burden on the patient is large, and the installation work is difficult. It becomes. For this reason, there is a demand for more convenient and efficient installation of the cassette.

  The present invention has been made in consideration of the above-mentioned problems, facilitates installation between the subject and the base, reduces the burden on the subject due to the installation work, and efficiently performs the work. It is an object to provide a cassette that can be performed and can be miniaturized.

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 tapered portion provided in the housing and gradually tapering toward the tip;
With
The taper portion is provided on a side surface of the housing that does not face the subject and the base when the case is installed between the subject and the base on which the subject stands. Is provided with wireless communication means capable of wireless communication with the outside.

  According to the present invention, the housing in which the radiation conversion panel is housed includes a tapered portion that gradually tapers toward the tip, and wireless communication means capable of wireless communication with the outside is provided inside the tapered portion. When the cassette including the housing is installed between the subject and the stand on which the subject is placed, the subject is provided by a tapered portion provided on a side surface that does not face the subject and the stand. It is possible to make it gradually enter between the base and the stand. Therefore, the cassette can be easily entered between the subject and the base via the taper portion, and the burden on the subject due to the installation work can be reduced. As a result, the cassette can be installed efficiently. Further, by accommodating the wireless communication means in the tapered portion, the space in the housing can be used effectively, and the cassette including the housing can be downsized.

  FIG. 1 is an explanatory diagram of an operating room 12 in which a radiographic imaging system 10 using 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) 52 (described later) that detects the radiation X transmitted through the patient 14. ) Built-in radiation detection cassette (cassette) 24, a display device 26 for displaying a radiation image based on the radiation X detected by the radiation detector 52, 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 32, 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 obstruct the operation by the doctor 18. Similarly, the display device 26 is connected to the universal arm 34 and can be moved to a position where the doctor 18 can easily confirm the captured radiographic image.

  2 to 4 are an external view and an internal configuration diagram of the radiation detection cassette 24.

  The radiation detection cassette 24 includes a casing (housing) 36 made of a material that transmits the radiation X. The casing 36 is provided in a pair of first and second flat plate portions 38 and 40 which are substantially rectangular and spaced apart from each other by a predetermined distance, and on both side portions along the longitudinal direction of the first and second flat plate portions 38 and 40. The pair of first and second taper portions 42 and 44, the first and second flat plate portions 38 and 40, and the first and second taper portions 42 and 44 are substantially orthogonal to each other and block their ends. It is composed of a set of connection walls 46a and 46b. The casing 36 is disposed such that the first flat plate portion 38 faces the imaging device 22 and the second flat plate portion 40 faces the operating table 16.

  Between the first flat plate portion 38 and the second flat plate portion 40 constituting the radiation detection cassette 24, the scattered radiation of the radiation X by the patient 14 is removed from the irradiation surface 48 side of the casing 36 irradiated with the radiation X. A grid 50, a radiation detector 52 that detects the radiation X transmitted through the patient 14, and a lead plate 54 that absorbs the back scattered radiation of the radiation X are arranged in this order. In addition, you may comprise the irradiation surface 48 of the casing 36 as a grid.

  The first and second taper portions 42 and 44 are formed in a substantially V-shaped cross section, and are formed in a taper shape that gradually tapers in a direction away from both side portions of the first and second flat plate portions 38 and 40. .

  The first and second taper portions 42 and 44 are joined to the first flat plate portion 38 and joined to the first inclined portion 56 extending downward at a predetermined angle and the second flat plate portion 40 at a predetermined angle. And an end portion of the first inclined portion 56 and an end portion of the second inclined portion 58 are predetermined from the first and second flat plate portions 38 and 40, respectively. They are joined together at spaced apart positions. The first and second taper portions 42 and 44 are formed in a symmetrical shape that tapers in a direction away from each other with the first and second flat plate portions 38 and 40 interposed therebetween.

  That is, the casing 36 is formed with a substantially central portion in the width direction (arrow A direction) orthogonal to the longitudinal direction by the first and second flat plate portions 38 and 40, and the width direction (arrow A direction). ) Are formed so that the thickness gradually decreases toward the outside. In other words, the radiation detection cassette 24 including the casing 36 is formed so as to be thicker from both ends in the width direction (arrow A direction) toward the center.

  A radiation blocking member 60a capable of blocking the transmission of the radiation X along the inner wall surface is provided inside the first taper portion 42, and the radiation detection cassette 24 is disposed inside the radiation blocking member 60a formed in a hollow shape. A battery 62 as a power source is accommodated.

  On the other hand, a radiation blocking member 60b capable of blocking the transmission of the radiation X along the inner wall surface is provided inside the second taper portion 44, similarly to the first taper portion 42, and the radiation blocking member is formed in a hollow shape. Inside the member 60b, there is a cassette control unit 64 that drives and controls the radiation detector 52 by the electric power supplied from the battery 62, and a signal including information on the radiation X detected by the radiation detector 52 is sent to the console 28. A transmitter / receiver (wireless communication means) 66 for transmitting and receiving data is accommodated. The radiation blocking members 60a and 60b are made of, for example, a radiation blocking sheet formed from sheet-like lead.

  As described above, the cylindrical radiation blocking members 60a and 60b are provided in the first and second taper portions 42 and 44, and the battery 62, the cassette control unit 64, and the transceiver 66 are accommodated therein, so that the casing 36 It is possible to avoid damage due to the radiation X irradiated to the irradiation surface 48, and the battery 62, the cassette control unit 64, and the transceiver 66 are suitably protected.

  In addition, arrangement | positioning of the battery 62 accommodated in the 1st and 2nd taper parts 42 and 44, the cassette control part 64, and the transmitter / receiver 66 is not limited to the case mentioned above, For example, the 1st taper part 42 is arranged. The battery 62, the cassette control unit 64, and the transmitter / receiver 66 may all be accommodated. Conversely, the battery 62, the cassette control unit 64, and the transmitter / receiver 66 are all accommodated in the second taper portion 44. You may do it.

  The pair of connection walls 46a and 46b are formed in a flat rhombus shape corresponding to the cross-sectional shape including the first and second flat plate portions 38 and 40 and the first and second tapered portions 42 and 44.

  FIG. 5 is a circuit configuration block diagram of the radiation detector 52. The radiation detector 52 has a photoelectric conversion layer 69 made of a material such as amorphous selenium (a-Se) that senses the radiation X and generates charges on an array of thin film transistors (TFTs) 70. After the generated charge is stored in the storage capacitor 71, the TFTs 70 are 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 68 including the photoelectric conversion layer 69 and the storage capacitor 71 and one TFT 70 is shown, and the configuration of the other pixels 68 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 52 in the radiation detection cassette 24.

  A gate line 72 extending parallel to the row direction and a signal line 74 extending parallel to the column direction are connected to the TFT 70 connected to each pixel 68. Each gate line 72 is connected to a line scanning drive unit 76, and each signal line 74 is connected to a multiplexer 84 constituting a reading circuit.

  Control signals Von and Voff for controlling on / off of the TFTs 70 arranged in the row direction are supplied from the line scanning drive unit 76 to the gate line 72. In this case, the line scan driving unit 76 includes a plurality of switches SW1 for switching the gate lines 72 and an address decoder 78 for outputting a selection signal for selecting one of the switches SW1. An address signal is supplied to the address decoder 78 from the cassette control unit 64.

  Further, the charge held in the storage capacitor 71 of each pixel 68 flows out to the signal line 74 via the TFTs 70 arranged in the column direction. This charge is amplified by the amplifier 80. A multiplexer 84 is connected to the amplifier 80 via a sample and hold circuit 82. The multiplexer 84 includes a plurality of switches SW2 for switching the signal line 74 and an address decoder 86 for outputting a selection signal for selecting one of the switches SW2. An address signal is supplied from the cassette control unit 64 to the address decoder 86. An A / D converter 88 is connected to the multiplexer 84, and radiation image information converted into a digital signal by the A / D converter 88 is supplied to the cassette control unit 64.

  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 imaging conditions from the imaging switch 90, a radiation source 92 that outputs radiation X, and wireless communication from the console 28, and transmits and receives an imaging completion signal and the like to the console 28 by wireless communication. 94 and a radiation source control unit 96 that controls the radiation source 92 based on the imaging start signal supplied from the imaging switch 90 and the imaging conditions supplied from the transceiver 94.

  The radiation detection cassette 24 accommodates a radiation detector 52, a battery 62, a cassette control unit 64, and a transceiver 66.

  The cassette controller 64 is detected by the radiation detector 52 and an address signal generator 98 that supplies an address signal to the address decoder 78 of the line scan driver 76 and the address decoder 86 of the multiplexer 84 that constitute the radiation detector 52. An image memory 100 for storing the radiographic image information, and a cassette ID memory 102 for storing cassette ID information for specifying the radiation detection cassette 24.

  The transceiver 66 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 102 and the radiation image information stored in the image memory 100 to the console 28. Send by communication.

  The display device 26 displays a receiver 104 that receives radiation image information from the console 28, a display control unit 106 that performs display control of the received radiation image information, and the radiation image information processed by the display control unit 106. And a display unit 108.

  The console 28 is necessary for imaging by the imaging apparatus 22 and the transceiver 110 that transmits and receives necessary information including radiographic image information and position information to the imaging apparatus 22, the radiation detection cassette 24, and the display apparatus 26 by wireless communication. An imaging condition management unit 112 that manages various imaging conditions, an image processing unit 114 that performs image processing on radiation image information transmitted from the radiation detection cassette 24, an image memory 116 that stores processed radiation image information, and an imaging target A patient information management unit 118 that manages the patient information of the patient 14 and a cassette information management unit 120 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 118 of the console 28 before 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 112 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 the radiographer in charge takes the first plate 38 of the casing 36 at the imaging device 22 and patient 14 side at a predetermined position between the patient 14 and the operating table 16. The radiation detection cassette 24 is installed so that the second flat plate portion 40 is on the operating table 16 side (arrow C direction) (arrow B direction).

  Here, the installation operation of the radiation detection cassette 24 will be briefly described with reference to FIGS. 7A to 7C. 7A to 7C are explanatory diagrams viewed from the foot side of the patient 14 in the operating room 12.

  First, as shown in FIG. 7A, the radiation detection cassette 24 is placed on the side of the patient 14 on the operating table 16 so that the first tapered portion 42 of the casing 36 faces a predetermined position between the patient 14 and the operating table 16. Placed on. The radiation detection cassette 24 is placed so that the side portion having the first tapered portion 42 is substantially parallel to the patient 14. Then, by moving the radiation detection cassette 24 toward the patient 14 side (in the direction of arrow D), the radiation detection cassette 24 has the first and second portions after the first taper portion 42 contacts the side portion of the patient 14. While moving between the patient 14 and the operating table 16 through the inclined portions 56 and 58, the head gradually moves toward a predetermined position (see FIG. 7B).

  At this time, since the patient 14 is gradually lifted with respect to the operating table 16 via the first tapered portion 42 whose thickness gradually increases (see FIG. 7B), the radiation that does not include the first tapered portion 42. Compared with the case where the detection cassette is installed, the burden when the detection cassette is installed at a predetermined position between the patient 14 and the operating table 16 is reduced, and the installation work can be performed more easily.

  Further, by moving the radiation detection cassette 24 toward the patient 14 (in the direction of arrow D), the first flat plate portion 38 of the radiation detection cassette 24 enters the lower side of the patient 14 and enters the affected area of the patient 14. It will be in the state installed in the corresponding predetermined position (refer FIG. 7C).

  The same applies to the case where the radiation detection cassette 24 is installed at a predetermined position between the patient 14 and the operating table 16 from the second tapered portion 44 side.

  Next, after the radiation detection cassette 24 is reliably installed at a predetermined position between the patient 14 and the operating table 16 as described above, the imaging switch 90 is operated to perform imaging. The radiation source control unit 96 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 112 of the console 28 via the transceivers 94 and 110, and acquires the acquired imaging conditions. By controlling the radiation source 92 according to the above, the patient 14 is irradiated with the radiation X having a predetermined dose.

  After the scattered radiation is removed by the grid 50 of the radiation detection cassette 24, the radiation X transmitted through the patient 14 is irradiated to the radiation detector 52, and is electrically supplied by the photoelectric conversion layer 69 of each pixel 68 constituting the radiation detector 52. The signal is converted into a signal and held as a charge in the storage capacitor 71 (see FIG. 5). Next, the charge information, which is the radiographic image information of the patient 14 held in each storage capacitor 71, is in accordance with the address signal supplied from the address signal generator 98 constituting the cassette controller 64 to the line scan driver 76 and the multiplexer 84. Read out.

  That is, the address decoder 78 of the line scan driver 76 outputs a selection signal according to the address signal supplied from the address signal generator 98, selects one of the switches SW1, and the TFT 70 connected to the corresponding gate line 72. A control signal Von is supplied to the gates of the first and second gates. On the other hand, the address decoder 86 of the multiplexer 84 outputs a selection signal in accordance with the address signal supplied from the address signal generation unit 98, sequentially switches the switch SW2, and is connected to the gate line 72 selected by the line scan driving unit 76. Radiation image information which is charge information held in the storage capacitor 71 of each pixel 68 is read out via a signal line 74.

  The radiation image information read from the storage capacitor 71 of each pixel 68 connected to the selected gate line 72 of each radiation detector 52 is amplified by each amplifier 80 and then sampled by the sample and hold circuit 82. The signal is supplied to the A / D converter 88 via the multiplexer 84 and converted into a digital signal. The radiographic image information converted into the digital signal is temporarily stored in the image memory 100 of the cassette control unit 64 and then transmitted to the console 28 by wireless communication via the transceiver 66.

  Similarly, the address decoder 78 of the line scan driving unit 76 sequentially switches the switch SW 1 according to the address signal supplied from the address signal generating unit 98, and the storage capacitor 71 of each pixel 68 connected to each gate line 72. The stored radiation image information, which is charge information, is read out via the signal line 74 and stored in the image memory 100 of the cassette control unit 64 via the multiplexer 84 and the A / D converter 88.

  The radiographic image information transmitted to the console 28 is received by the transceiver 110 and subjected to predetermined image processing in the image processing unit 114 and then associated with the patient information of the patient 14 registered in the patient information management unit 118. Stored in the image memory 116.

  The radiographic image information subjected to the image processing is transmitted from the transceiver 110 to the display device 26. The display device 26 that has received the radiation image information by the receiver 104 controls the display unit 108 by the display control unit 106 to display the radiation image. The doctor 18 performs the operation while checking the radiation image displayed on the display unit 108.

  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.

  The casing 36 is not limited to the case where the first and second taper portions 42 and 44 are provided along both side portions of the casing 36 as described above. For example, the casing 36 includes a set of connection walls 46a, You may make it provide the taper part which becomes gradually tapered toward the front-end | tip also in the both ends along the longitudinal direction in which 46b is provided. That is, you may make it provide all the taper parts in four side parts in the casing 36. FIG. In this case, even when the radiation detection cassette 24 including the casing 36 is moved and installed along the longitudinal direction between the patient 14 and the operating table 16, the burden on the patient 14 is caused by the tapered portion. It becomes possible to install easily while reducing.

  As described above, in the present embodiment, the casing 36 in which the radiation detector 52 is housed includes the first and second taper portions 42 and 44 that gradually taper toward the tip, and the first 36 In addition, the battery 62, the cassette controller 64, and the transceiver 66 are housed inside the second taper portions 42, 44, and radiation shielding members 60a, 60b are provided. The first and second taper portions 42 and 44 are provided on the side surfaces that do not face the patient 14 and the operating table 16 when the radiation detection cassette 24 is installed between the patient 14 and the operating table 16.

  Accordingly, since the radiation detection cassette 24 can be gradually inserted between the patient 14 and the operating table 16 by the first or second taper portions 42 and 44, the installation work of the radiation detection cassette 24 is facilitated. The installation work can be performed efficiently, and the burden on the patient 14 due to the installation work can be reduced.

  Further, by accommodating the battery 62, the cassette control unit 64, and the transceiver 66 inside the first and second taper portions 42, 44, the space in the casing 36 can be used effectively, An increase in the size of the casing 36 due to the provision of the second tapered portions 42 and 44 can be suppressed. As a result, the radiation detection cassette 24 including the casing 36 can be downsized.

  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.

  As shown in FIG. 8, it is more preferable to configure the radiation detection cassette 500.

  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 subject ID information 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 62 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 external AC adapter when the charging function of the battery 62 built in the radiation detection cassette 500 is deteriorated or when sufficient time for charging the battery 62 cannot be secured. 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.

  As shown in FIG. 9, it is preferable to place a cradle 518 that is loaded with a radiation detection cassette 24 and charges a built-in battery 62 at a required location in the operating room 12 or hospital. In this case, the cradle 518 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 62 but also the wireless communication function or the wired communication function of the cradle 518. 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 518.

  In addition, a display unit 520 is provided in the cradle 518, and necessary information including the charged 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.

  Also, a plurality of cradles 518 are connected to a network, and the charging state of the radiation detection cassette 24 loaded in each cradle 518 is collected via the network, and the location of the radiation detection cassette 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 which concerns on this Embodiment was installed. It is an internal configuration perspective view of a radiation detection cassette. It is a top view of the radiation detection cassette shown in FIG. It is a longitudinal cross-sectional 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. 7A to 7C are explanatory views showing a series of operations when the radiation detection cassette is installed between the patient and the operating table. 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 36 ... Casing 38 ... 1st flat plate part 40 ... 2nd flat plate part 42 ... 1st taper part 44 ... 2nd taper part 48 ... Irradiation surface 52 ... Radiation detector 56 ... 1st inclination part 58 ... 2nd inclination part 60a, 60b ... Radiation shielding member 62 ... Battery 64 ... Cassette control part 66, 94, 110 ... transceiver 92 ... radiation source

Claims (3)

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 tapered portion provided in the housing and gradually tapering toward the tip;
With
The taper portion is provided on a side surface of the housing that does not face the subject and the base when the case is installed between the subject and the base on which the subject stands. The cassette includes a wireless communication means capable of wireless communication with the outside. The cassette of claim 1,
The cassette is characterized in that a radiation blocking member capable of blocking transmission of radiation is provided inside the taper portion, and the wireless communication means is disposed inside the radiation blocking member. The cassette according to claim 1 or 2,
The cassette is characterized in that a battery for driving the radiation conversion panel and the wireless communication means is disposed inside the tapered portion.

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