X-ray imaging system with fluoroscopy feature, portable x-ray plane detector, photography platform, and fluoroscopic table

Abstract

To carry out fluoroscopy using a portable X-ray plane detector (FPD) that is thin and light-weight.SOLUTION: A photography platform includes a cradle that holds an inserted X-ray plane detector. The X-ray plane detector includes a signal processing part that creates detected data for image formation by processing signals readout from an X-ray detection part. The cradle includes a signal processing feature expansion part connected to the signal processing part of the inserted X-ray plane detector. The signal processing part includes a memory, and the signal processing feature expansion part includes an expanded memory.The signal processing part creates detected data for one image by using the memory during imaging, and repetitively creates detected data at a predetermined frame rate by using the memory and the expanded memory during fluoroscopy.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to an X-ray imaging apparatus having a fluoroscopy function that performs fluoroscopy using a portable X-ray flat panel detector. [Background technology]

[0002] When taking an X-ray using an X-ray imaging device, the user inserts a portable FPD (flat panel detector) into an upright or lying position imaging table. An X-ray source irradiates a subject in a standing or lying position, and the X-rays that pass through the subject are detected by the FPD. When taking an X-ray using a mobile X-ray imaging device, the user inserts the FPD between the subject on the bed, and the X-ray source irradiates the subject on the bed with X-rays, which are detected by the FPD.

[0003] On the other hand, in an X-ray fluoroscopy system (X-ray TV system), an FPD is fixedly placed inside the bed on which the subject is placed. The X-ray source of the X-ray fluoroscopy system is supported by a mechanism so that it moves in conjunction with the movement of the bed. The X-ray source irradiates X-rays onto the subject placed on the bed. The FPD inside the bed detects the X-rays that have passed through the subject.

[0004] In X-ray imaging, one X-ray image is generated. In contrast, in fluoroscopy, for example, 15 X-ray images are generated per second. For this reason, in X-ray imaging devices that perform imaging, detected data is exchanged between a portable FPD and an image processing unit via wireless or wired communication. On the other hand, in X-ray fluoroscopy devices that perform fluoroscopy, the FPD and image processing unit are fixedly connected via a wire, and detected data is exchanged at a communication speed faster than wireless communication.

[0005] In recent years, as described in Non-Patent Document 1, an X-ray imaging device has been sold that uses a portable FPD and enables fluoroscopic examination using pulsed fluoroscopy under certain conditions. [Prior art documents] [Patent documents]

[0006] [Non-Patent Document 1] https: / / www.fujifilm.com / jp / ja / healthcare / x-ray / digital-xray-imaging / calneo-beyond Summary of the Invention [Problem to be solved by the invention]

[0007] The X-ray imaging apparatus of Non-Patent Document 1 described above is capable of performing fluoroscopic examinations using pulse fluoroscopy using a portable FPD, but since the apparatus is primarily designed for imaging functions, the portable FPD used must be thin and lightweight. Therefore, the portable FPD used in the X-ray imaging apparatus of Non-Patent Document 1 has a synchronization function with pulse fluoroscopy, a large-capacity memory, a high-speed wired communication function, and the like, so that fluoroscopic examinations can be performed using pulse fluoroscopy. However, the portable FPD used in the X-ray imaging apparatus of Non-Patent Document 1 is limited in the components installed to achieve the fluoroscopy function compared to an FPD dedicated to fluoroscopy.

[0008] Specifically, compared to portable FPDs, dedicated fluoroscopy FPDs have large-capacity memory for storing detected data for fluoroscopy and imaging, a high-speed arithmetic processing unit for improving data processing such as readout of data from X-ray detection elements, high-speed communication for transferring data at high speed, a temperature monitoring function, etc. These functions enable dedicated fluoroscopy FPDs to perform fluoroscopy for longer periods of time at a higher frame rate than the portable FPDs used in the X-ray imaging apparatus of Non-Patent Document 1.

[0009] There is a limit to how close the fluoroscopy function can be to that of a dedicated fluoroscopy FPD while maintaining the lightweight, thin shape and high robustness of the portable FPD used in the X-ray imaging apparatus of Non-Patent Document 1.

[0010] An object of the present invention is to perform X-ray fluoroscopy using a thin, lightweight, portable X-ray flat panel detector (FPD). [Means for solving the problem]

[0011] In order to achieve the above object, the X-ray imaging device with fluoroscopy function of the present invention includes an X-ray irradiation unit, a portable X-ray planar detector, an imaging table to which the X-ray planar detector is attached and which supports the X-ray planar detector at a region of a subject to be imaged, and an image processing unit. The imaging table is provided with a cradle that holds the inserted X-ray planar detector. The X-ray planar detector includes an X-ray detection unit including a plurality of X-ray detection elements that detect X-rays irradiated from the X-ray irradiation unit and passed through the subject, and a signal processing unit that processes signals read from the X-ray detection unit to generate detection data for image generation. The cradle is provided with a signal processing function expansion unit connected to the signal processing unit of the inserted X-ray planar detector. The signal processing unit includes a memory, and the signal processing function expansion unit includes an expansion memory. During imaging, the signal processing unit generates detection data for one image using the memory, and during fluoroscopy, it repeatedly generates detection data at a predetermined frame rate using the memory and the expansion memory. [Effects of the Invention]

[0012] According to the present invention, X-ray fluoroscopy can be performed using a thin, lightweight, portable X-ray flat panel detector (FPD). [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a side view showing the structure of an X-ray imaging apparatus 100 with a fluoroscopy function according to the present embodiment. [Figure 2] FIG. 2 is a block diagram showing the internal structure of a cradle of the X-ray imaging apparatus 100 according to the embodiment. [Figure 3] 1 is a block diagram of an X-ray imaging apparatus 100 having a fluoroscopy function according to an embodiment. [Figure 4] 1 is a block diagram showing a configuration used when imaging with an X-ray imaging apparatus 100 having a fluoroscopic function according to an embodiment. [Figure 5] 4 is a flowchart showing the operation of the X-ray imaging apparatus with fluoroscopy function according to the embodiment. [Figure 6] 1 is a block diagram showing that a portable FPD 3 can be selectively inserted into the supine position radiography stand 1 and the upright position radiography stand 6 of this embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0014] An embodiment of the present invention will be described with reference to the drawings.

[0015] The X-ray imaging device of this embodiment can perform both imaging and fluoroscopy by inserting a portable X-ray flat panel detector (hereinafter referred to as FPD), and the portable X-ray flat panel detector is lightweight and thin.

[0016] The configuration of an X-ray imaging apparatus 100 with a fluoroscopic function according to this embodiment will be described with reference to FIGS.

[0017] Fig. 1 is a side view showing the structure of an X-ray imaging apparatus 100 with fluoroscopy capabilities according to this embodiment, and Fig. 2 is a block diagram showing the internal structure of a cradle. Figs. 3 and 4 are block diagrams showing the configuration of the X-ray imaging apparatus 100 used during fluoroscopy and imaging, respectively. Fig. 5 is a flowchart showing the operation of the X-ray imaging apparatus 100. Fig. 6 is a block diagram showing that a portable FPD 3 can be selectively inserted into the supine position imaging table 1 and the upright position imaging table 6.

[0018] The X-ray imaging device 100 with fluoroscopy function is configured with an X-ray irradiation unit 11, a portable X-ray flat panel detector (hereinafter referred to as FPD) 3, a supine imaging table 1, an upright imaging table 6, an image processing device (image processing unit) 5, and an X-ray control device 11b.

[0019] As shown in FIG. 3, the X-ray irradiation unit 11 includes an X-ray source 11a.

[0020] The supine position imaging table 1 is shaped like a bed and includes a top plate 1a on which a subject is placed in a supine position. A space for holding a portable FPD 3 is provided inside the supine position imaging table 1, and an opening 1b is provided on the side of the supine position imaging table 1 for inserting the FPD 3 with its principal plane parallel to the principal plane of the top plate 1a. The supine position imaging table 1 is used to perform imaging and / or fluoroscopy on a subject in a supine position.

[0021] The upright imaging platform 6 includes a thin, box-shaped housing 6a and legs 6b that support the housing 6a. A space for holding a portable FPD 3 is provided inside the housing 6a, and an opening (not shown) is provided on the side of the housing 6a for inserting the FPD 3 with its main plane oriented vertically. The upright imaging platform 6 is configured so that a subject can stand in front of it. The legs 6b are provided with a vertical movement mechanism for supporting the housing 6a with the FPD inserted at the desired imaging site of the upright subject. This allows the upright imaging platform 6 to perform imaging and / or fluoroscopy of the desired imaging site of the upright subject.

[0022] 2, a cradle 4 that pulls in and holds the inserted FPD 3 is disposed within the openings of the supine position imaging table 1 and the housing 6a of the upright position imaging table 6. The structure of the cradle 4 will be described in detail later.

[0023] In this embodiment, the X-ray source 11a is supported by a support column 7 relative to the supine position imaging table 1. A mechanism for raising or lowering the top plate 1a in a state in which the X-ray source 11a and the portable FPD 3 inserted in the supine position imaging table 1 face each other may be provided. That is, the supine position imaging table 1 may have the structure of an fluoroscopy table. In this case, an opening 1b is provided in the fluoroscopy table, and a cradle 4 is placed inside, resulting in a fluoroscopy table structure in which the portable FPD 3 can be attached and detached.

[0024] In addition, the connection between the X-ray source 11a and the support 7 is equipped with a rotation mechanism that changes the direction of irradiation of the X-ray source 11a, and by rotating the direction of the X-ray source 11a by 90 degrees and pointing it toward the upright imaging table 6, imaging and / or fluoroscopy can be performed using the upright imaging table 6.

[0025] The X-ray source 11a is not limited to being supported by the support column 7 on the supine position imaging table 1. For example, the X-ray source 11a can be suspended from a rail on the ceiling by a suspender, or supported on a rail on the floor. In these cases, the X-ray source 11a can move along the rail.

[0026] Furthermore, the X-ray source 11a and the image processing unit 5 may be mounted on a wheeled cart, forming a medical examination cart.

[0027] The supine position radiography table 1 and the upright position radiography table 6 are provided with radiography table control units 12 and 61, respectively, for adjusting the elevation and height, as shown in FIGS.

[0028] The X-ray flat panel detector 3 includes an X-ray detection unit 31, a signal processing unit 32, an FPD control unit 33, a power supply unit (battery) 34, a wired communication unit 35, a wireless communication unit 36, and a flat cassette (housing) 37 that accommodates these components. The signal processing unit 32 has a built-in memory 32a.

[0029] The X-ray detection unit 31 includes a plurality of X-ray detection elements arranged two-dimensionally and a readout circuit for the X-ray detection elements. The X-ray detection elements detect X-rays irradiated from the X-ray source 11a and passing through the subject. The readout circuit reads out detection signals from the arranged plurality of X-ray detection elements. The signal processing unit 32 processes the signal data read out from the X-ray detection unit using the memory 32a to generate detection data (coarse image data) and temporarily store it in the memory 32a. The detection data is data for one image generated by the image processing unit 5. The detection data is transmitted to the image processing unit 5 via the wired communication unit 35 or the wireless communication unit 36 ​​under the control of the FPD control unit 33. The image processing unit 5 processes the detection data to generate one captured image or one frame of a fluoroscopic image.

[0030] Three terminals 38-1, 38-2, and 38-3 are provided at an end of a cassette 37 of the X-ray flat panel detector 3. The three terminals 38-1, 38-2, and 38-3 are respectively connected to a signal processing unit 32, a power supply unit 34, and a wired communication unit 35. Note that although the three terminals 38-1, 38-2, and 38-3 are respectively arranged on the cassette 37 here, it is also possible to arrange the three terminals 38-1, 38-2, and 38-3 together in one connector and arrange it on the cassette 37.

[0031] On the other hand, the cradle 4 is provided with three terminals 48-1, 48-2, and 48-3, a slot-in mechanism 47 which is a drive mechanism for holding and pulling in the portable FPD 3, and an ejection button 49, as shown in FIG.

[0032] Furthermore, the cradle 4 is provided with a signal processing function expansion unit 43, an FPD size detection unit 41, an exposure correction sensor 42, a charge control unit 44, and a wired communication relay unit 45. The signal processing function expansion unit 43 has an expansion memory 43a built in.

[0033] The three terminals 48-1, 48-2, and 48-3 are connected to the signal processing function expansion unit 43, the charging control unit 44, and the wired communication relay unit 45, respectively.

[0034] The slot-in mechanism 47 includes a gripper 47a that grips (holds) both ends of the cassette 37 of the FPD 3 inserted by the user when the cassette 37 comes into contact with the slot-in mechanism 47, a pair of rails 47b, and a drive unit (not shown) that moves the gripper 47a along the rails 47b. The operations of the gripper 47a and the drive unit are controlled by the cradle control unit 46.

[0035] As a result, the slot-in mechanism 47 grips the cassette 37 of the FPD 3 inserted into the cradle 4 from the opening 1b by the user, and pulls the FPD 3 into the cradle 4. The terminals 38-1, 38-2, and 38-3 on the FPD 3 side are positioned by the slot-in mechanism 47 to contact the terminals 48-1, 48-2, and 48-3 on the cradle 4 side, respectively, and are electrically connected.

[0036] On the other hand, when the user presses the eject button 49, it outputs a signal to the cradle control unit 46. This causes the cradle control unit 46 to perform the reverse operation of when the FPD 3 was retracted, and eject the FPD 3 from the opening 1b.

[0037] When the terminal 38 - 1 of the FPD 3 inserted into the cradle 4 comes into contact with the terminal 48 - 1 of the cradle 4 , the signal processing unit 32 of the FPD 3 is connected to the signal processing function expansion unit 43 of the cradle 4 .

[0038] The FPD size detection unit 41 of the cradle 4 detects the size of the FPD 3 retracted by the cradle 4 during fluoroscopy. The exposure correction sensor 42 detects the intensity of the irradiated X-rays and outputs exposure correction data. The detected size of the FPD 3 is passed to the image processing unit 5 via the cradle control unit 46. The exposure correction data is sent to the X-ray control device 11b via the image processing unit 5.

[0039] This allows the signal processing unit 32 of the FPD 3 to use the function of the signal processing function expansion unit 43 and the expansion memory 43a of the cradle 4 in addition to its own memory 32a. This allows the signal processing unit 32 to repeatedly generate detection data at a predetermined frame rate and store the data in the expansion memory 43a until it is sequentially transmitted to the image processing unit 5. Therefore, the X-ray imaging apparatus 100 can perform fluoroscopy using the portable FPD 3.

[0040] At this time, the signal processing unit 32 of the FPD 3 can generate detection data. The X-ray control device 11b adjusts the dose of X-rays emitted by the X-ray source 11a based on the exposure correction data. This allows the image processing control unit 5 to generate exposure-corrected image data.

[0041] In addition to the expansion memory 43a, the signal processing function expansion unit 43 also includes a sub-processing unit (CPU) for improving the data processing capability of the signal processing unit 32, a circuit (for example, a programmable IC such as an FPGA (Field-Programmable Gate Array)) for realizing high-speed data transfer from the FPD 3 to the image processing unit 5, and a temperature monitoring function, a voltage monitoring function, and a log storage function, which are self-monitoring functions of the signal processing function expansion unit 43. The temperature monitoring function monitors whether the temperature of the signal processing function expansion unit 43 has reached a predetermined temperature, since a higher temperature increases the processing load. The voltage monitoring function monitors the voltage of the FPD's power supply (power supply unit 34) to realize stable processing for generating detection data in real time.

[0042] As described above, the signal processing unit 32 uses the memory 32a to generate detection data for one image during imaging, and uses the memory 32a and the extended memory 43a of the signal processing function extension unit 43 to repeatedly generate detection data at a predetermined frame rate during fluoroscopy, and can store the data until it is transmitted to the image processing unit 5.

[0043] The image processing unit 5 includes an image processing control unit 51, a wired communication unit 52, and a wireless communication unit 53.

[0044] The wired communication unit 35 of the FPD 3 is connected to the wired communication relay unit 45 by contacting the terminal 38-4 on the FPD 3 side with the terminal 48-3 on the cradle 4 side. The wired communication relay unit 45 is connected to the wired communication unit 52 of the image processing unit 5 by wire.

[0045] On the other hand, the wireless communication unit 36 ​​of the FPD 3 is connected to the wireless communication unit 53 of the image processing unit 5 by wireless communication.

[0046] Therefore, when imaging is performed in the X-ray imaging apparatus 100, as shown in Fig. 4, the signal processing unit 32 generates detection data for one image using the built-in memory 32a and temporarily stores it in the memory 32a without using any functions of the cradle 4 other than the slot-in mechanism 47. Under the control of the FPD control unit 33, the detection data in the memory 32a is transmitted to the image processing unit 5 via wireless communication between the wireless communication units 36 and 53. The image processing control unit 51 generates imaging data from the received detection data.

[0047] On the other hand, when performing fluoroscopy in the X-ray imaging apparatus 100, as shown in Fig. 3, the signal processing unit 32 uses the functions of the signal processing function expansion unit 43 and the functions of the cradle 4, such as the expansion memory 43a, in addition to the memory 32a, to sequentially generate detection data at a predetermined frame rate and store the data in the expansion memory 43a. Under the control of the FPD control unit 33, the detection data in the expansion memory 43a is sequentially transmitted to the image processing unit 5 at the predetermined frame rate via wired communication between the wired communication unit 35, the wired communication relay unit 45, and the wired communication unit 52. The image processing control unit 51 generates fluoroscopy data at the predetermined frame rate using the received detection data and the size of the FPD 3 received from the FPD size detection unit 41 via the cradle control unit 46.

[0048] Furthermore, the terminal 38-2 of the FPD 3 inserted into the cradle 4 is connected to the power supply unit 34. The terminal 38-2 comes into contact with the terminal 48-2 of the cradle 4, thereby connecting to the charge control unit 44 of the cradle 4. As a result, the power supply unit (battery) 34 of the FPD 3 is charged by the charge control unit 44.

[0049] The operation of the X-ray imaging apparatus 100 of this embodiment will be described with reference to the flowchart of FIG.

[0050] <Step 501> The cradle control unit 46 of the cradle 4 determines, through operation of the slot-in mechanism 47, whether or not the user has inserted the portable FPD 3 into the cradle 4. If the FPD 3 has not been inserted into the cradle 4, the process proceeds to step 502;

[0051] <Step 502> If it is determined that the FPD 3 is not inserted into the cradle 4, the signal processing unit 32 of the FPD 3 is not connected to the signal processing function expansion unit 43 of the cradle 4. That is, the FPD 3 is inserted between the bed and the subject to perform imaging on the bed of the subject, or the FPD 3 is inserted into a conventional imaging table that does not have a cradle 4. For this reason, the signal processing unit 32 of the FPD 3 cannot use the expansion memory 43a, etc. Therefore, the signal processing unit 32 executes the imaging mode in the same way as a conventional portable FPD that only performs imaging.

[0052] Specifically, when a user operates an imaging switch (not shown), the X-ray control device 11b causes the X-ray source 11a to emit X-rays. The X-ray detection unit 31 of the FPD 3 detects the X-rays emitted from the X-ray source 11a and outputs signal data. The signal processing unit 32 of the FPD 3 uses the memory 32a to generate detection data for one image and temporarily store it in the memory 32a.

[0053] <Step 503> The FPD control unit 33 of the FPD 3 establishes a wireless communication unit 53 of the image processing unit 5 with the wireless communication unit 36 ​​of the FPD 3, and transmits the detection data to the image processing unit 5 via wireless communication.

[0054] The image processing unit 5 generates photographic data for one image from the received detection data, and displays the data on a connected image display device.

[0055] <Step 504> On the other hand, if it is determined in step 501 that the FPD 3 is inserted into the cradle 4, the FPD 3 is inserted into either the supine position imaging table 1 or the upright position imaging table 6, as shown in FIG.

[0056] The FPD size detector 41 of the cradle 4 detects the size of the FPD 3 and whether it is placed vertically or horizontally. <Step 505> The cradle control unit 46 transmits the size of the FPD 3 detected in step 504 and the detection result of whether it is vertically or horizontally oriented to the image processing unit 5 connected by wire.

[0057] <Step 506> When the operator presses the imaging switch, the X-ray detection unit 31 of the FPD 3 detects the X-rays irradiated from the X-ray source 11a and outputs signal data, as in step 502. The signal processing unit 32 of the FPD 3 generates detection data for one image using the memory 32a and temporarily stores it in the memory 32a.

[0058] On the other hand, when the operator presses the foot switch to instruct fluoroscopy, the X-ray control device 11b continues to irradiate X-rays from the X-ray source 11a while the foot switch is being pressed.

[0059] The X-ray detection unit 31 of the FPD 3 detects X-rays emitted from the X-ray source 11a and repeats the operation of outputting signal data at a predetermined frame rate. The signal processing unit 32 of the FPD 3 generates detection data at a predetermined frame rate using the memory 32a, as well as the expansion memory 43a of the signal processing function expansion unit 43 and the functions of the signal processing function expansion unit 43, and stores the detection data sequentially in the expansion memory 43a.

[0060] <Step 507> 3, the signal processing unit 32 of the FPD 3 transmits the imaging detection data or fluoroscopic detection data generated in step 506 via wired communication between the wired communication unit 35, the wired communication relay unit 45, and the wired communication unit 52. Since wired communication allows for high-speed communication, the fluoroscopic detection data can be transmitted at a predetermined frame rate.

[0061] When imaging is performed in step 506, the detection data may be transmitted to the image processing unit 5 via wireless communication between the wireless communication unit 36 ​​of the FPD 3 and the wireless communication unit 53 of the image processing unit 5, as shown in FIG.

[0062] As described above, in the X-ray imaging apparatus 100 of this embodiment, the cradle 4 is placed on the supine position imaging table 1 or the upright position imaging table 6. The functions of the FPD 3 are divided into basic functions required for the FPD 3 to perform imaging and extended functions required for the FPD 3 to perform fluoroscopy, with the basic functions installed within the FPD 3 and the extended functions placed in the cradle 4.

[0063] Specifically, a signal processing unit and memory 32a required for radiography are mounted within the FPD 3. A signal processing function expansion unit 43, expansion memory 43a, and exposure correction sensor 42 required for fluoroscopy are mounted on the cradle 4.

[0064] Therefore, since the portable FPD3 of this embodiment does not need to be equipped with a signal processing function expansion unit 43 or expansion memory 43a, the structure of the portable FPD3 can be simplified, which can contribute to making the portable FPD3 lighter, thinner, more energy-efficient, and more robust.

[0065] Furthermore, the portable FPD 3 of this embodiment can perform fluoroscopy that was not possible with conventional portable FPDs, thanks to the functions of the signal processing function expansion unit 43, expansion memory 43a, exposure correction sensor 42, and wired communication relay unit 45 mounted on the cradle 4.

[0066] The portable FPD 3 of this embodiment allows a single FPD to be shared by multiple imaging tables 1, 6 or fluoroscopy tables for radiography and fluoroscopy. Furthermore, the portable FPD 3 of this embodiment can be used for radiography on an imaging table or fluoroscopy table that does not have a cradle 4, or on a bed. [Explanation of symbols]

[0067] 1 Recumbent photography platform 1a Top plate 1b aperture 3. Flat panel detector (FPD) 4. Cradle 5 Image processing section 6 Standing photography stand 6a Case 6b Legs 7 pillars 11 X-ray irradiation section 11a X-ray source 11b X-ray control device 12. Imaging table control unit 31 X-ray detection unit 32 Signal Processing Section 32a memory 33 FPD control unit 34 Power supply section 35 Wired Communications Department 36 Radio Communication Department 37 Cassette (housing) 38-1 Terminal 38-2 Terminal 38-3 Terminal 41 FPD size detection unit 42 Exposure compensation sensor 43 Signal Processing Function Expansion Unit 43a Extended Memory 44 Charging control unit 45 Wired communication relay unit 46 Cradle control unit 47 Slot-in mechanism 47a Grip part 47b Rail 48-1 Terminal 48-2 Terminal 48-3 Terminal 49 Eject button 51 Image processing control unit 52 Wired Communications Department 53 Radio Communication Department 100 X-ray equipment

Claims

1. an X-ray irradiation unit, a portable X-ray flat panel detector, an imaging table to which the X-ray flat panel detector is attached and which supports the X-ray flat panel detector at a region of the subject to be imaged, and an image processing unit; the imaging table is provided with a cradle that holds the inserted X-ray flat panel detector; the X-ray flat panel detector comprises an X-ray detection unit including a plurality of X-ray detection elements that detect X-rays irradiated from the X-ray irradiation unit and that have passed through the subject, and a signal processing unit that processes signals read out from the X-ray detection unit to generate detection data for image generation; the cradle includes a signal processing function expansion unit connected to the signal processing unit of the inserted X-ray flat panel detector, the signal processing unit includes a memory, and the signal processing function expansion unit includes an expansion memory; an X-ray imaging device with a fluoroscopy function, wherein the signal processing unit generates the detection data for one image using the memory during imaging, and repeatedly generates the detection data at a predetermined frame rate using the memory and the extended memory during fluoroscopy.

2. 2. The X-ray imaging apparatus with fluoroscopy function according to claim 1, wherein the X-ray planar detector further comprises a wireless communication unit for wireless communication with the image processing unit during imaging, and a wired communication unit for wired communication with the image processing unit during fluoroscopy, 10. An X-ray imaging apparatus with a fluoroscopic function, wherein the cradle further comprises a wired communication relay unit connected to the wired communication unit and relaying wired communication with the image processing unit.

3. 3. An X-ray imaging device with a fluoroscopy function as described in claim 2, characterized in that, when performing imaging, the detection data for one image generated by the signal processing unit is transmitted to the image processing unit via the wireless communication unit, and when performing fluoroscopy, the detection data generated by the signal processing unit at the predetermined frame rate is transmitted to the image processing unit via the wired communication unit and the wired communication relay unit.

4. 2. The X-ray imaging apparatus with fluoroscopy function according to claim 1, further comprising an X-ray control unit, the cradle further includes a size detection unit that detects the size of the X-ray flat panel detector during fluoroscopy, and an X-ray detection sensor for exposure correction; the X-ray control unit controls the amount of X-rays output by the X-ray irradiation unit based on the detection result of the exposure compensation X-ray detection sensor; an X-ray imaging device with a fluoroscopy function, wherein the image processing unit generates fluoroscopy data at the predetermined frame rate during fluoroscopy using the detection results of the size detection unit and the detection data generated by the signal processing unit.

5. 2. The X-ray imaging apparatus with fluoroscopy function according to claim 1, wherein the X-ray flat panel detector further comprises a battery, and the cradle further comprises a charge control unit, An X-ray imaging apparatus with a fluoroscopic function, wherein when the X-ray flat panel detector is held in the cradle, the charging control unit charges the battery.

6. 2. The X-ray imaging apparatus with a fluoroscopic function according to claim 1, wherein the X-ray planar detector further comprises a housing and an X-ray planar detector side terminal connected to the signal processing unit, the cradle further includes a cradle-side terminal connected to the signal processing function expansion unit and a drive mechanism; An X-ray imaging device with a fluoroscopy function, characterized in that the driving mechanism holds the inserted housing in the cradle, pulls the housing into the cradle, and positions the X-ray flat panel detector side terminals in contact with the cradle side terminals.

7. A portable X-ray flat panel detector having an X-ray detection unit including a plurality of X-ray detection elements that detect X-rays irradiated from an X-ray irradiation unit and passed through a subject, and a signal processing unit that processes signals read out from the X-ray detection unit to generate detection data necessary for generating an image, the signal processing unit includes a memory; A portable X-ray planar detector characterized in that, during photography, the signal processing unit uses the memory to generate the detection data for one image, and during fluoroscopy, the signal processing unit is connected to a signal processing function expansion unit of a cradle into which the portable X-ray planar detector is inserted, and repeats the detection data at a predetermined frame rate using the memory and an expansion memory provided in the signal processing function expansion unit.

8. an imaging table having an opening for inserting an X-ray flat panel detector including an X-ray detection unit and a signal processing unit, and supporting the X-ray flat panel detector at a region of a subject to be imaged, a cradle for holding the inserted X-ray flat panel detector is provided within the opening; a signal processing function expansion unit connected to the signal processing unit of the inserted X-ray flat panel detector is disposed in the cradle; the signal processing function expansion unit includes an expansion memory; 2. An imaging table with a fluoroscopy function, wherein the extended memory stores data generated by the signal processing unit of the X-ray planar detector during fluoroscopy.

9. A fluoroscopy table equipped with an X-ray irradiation unit and an imaging table, the imaging table has an opening for inserting an X-ray flat panel detector including an X-ray detection unit and a signal processing unit, and supports the X-ray flat panel detector at a region of the subject to be imaged; a cradle for holding the inserted X-ray flat panel detector is provided within the opening; a signal processing function expansion unit connected to the signal processing unit of the inserted X-ray flat panel detector is disposed in the cradle; the signal processing function expansion unit includes an expansion memory; 10. An fluoroscopy table with a fluoroscopy function, wherein the extended memory stores data generated by the signal processing unit of the X-ray planar detector during fluoroscopy.

Images