289 results about "Flat panel detector" patented technology

Provided are a detection substrate, a manufacturing method therefor and a flat panel detector. The detection substrate includes: a flexible substrate; a scintillator layer on a side of the flexible substrate, where the scintillator layer includes a central portion and a peripheral portion on at least one side of the central portion, the central portion and the peripheral portion are of an integrated structure, a thickness of the central portion at each position is approximately equal, and in a direction from an edge of the flexible substrate to a center of the flexible substrate, a thickness of the peripheral portion progressively increases; and a reinforcement structure, the reinforcement structure and the scintillator layer being on the same side of the flexible substrate, and the reinforcement structure at least covering part of the peripheral portion.

The invention relates to the technical field of image correction of computed tomography equipment, in particular to a cone beam computed tomography equipment correction method, and aims to solve the problems that geometric parameters projected by existing CBCT equipment are inaccurate, and a three-dimensional image subjected to three-dimensional reconstruction has obvious artifacts. In order to achieve the purpose, the method comprises the following steps: acquiring position coordinates of a marking substance in a phantom coordinate system and projection coordinates of the marking substance on a flat panel detector coordinate system when a conical ray originates from a plurality of positions; based on the position coordinates and the projection coordinates, calculating a projection matrix when the conical ray originates from a plurality of positions; calculating an average internal reference matrix of the plurality of internal reference matrixes based on the plurality of projection matrixes; determining a calculation projection coordinate corresponding to the position based on the average internal reference matrix and the position coordinate; and a nonlinear least square optimization algorithm is adopted to minimize the distance error between the projection coordinates and the calculated projection coordinates, and a calibration projection matrix is obtained. Random errors are suppressed by calculating an arithmetic average of the plurality of internal reference matrices.

The embodiment of the invention discloses a flat panel detector positioning method, device, system and equipment and a medium, and the method comprises the steps: obtaining an image, collected by an image collection device, of a flat panel detector, and determining the pixel coordinates of a feature mark and a feature point in the image through a positioning model; determining first position attitude information and confidence coefficient according to the pixel coordinates, the internal reference matrix and the physical coordinates of the feature points; according to the confidence coefficient and a preset threshold value, the first position and attitude information is determined to serve as positioning information, or the second position and attitude information is determined to serve as the positioning information, and the second position and attitude information is determined according to the motion state information obtained by the inertial sensor. According to the technical scheme of the embodiment of the invention, the problems of large size and high cost of the flat panel detector positioned by the existing magnetic positioning device are solved, the positioning cost of the flat panel detector can be reduced and the positioning reliability and portability can be improved by combining the positioning mode of visual detection and the inertial sensor, and the method can adapt to different scenes.

The invention relates to a multifunctional G-shaped arm which comprises an image body, a connecting frame is arranged on the upper surface of the image body, one end of the connecting frame is fixedly connected with a support, a driving structure is arranged in the support, the support is rotationally connected with an outer wall C arm, and one end of the outer wall C arm is fixedly connected with an electric push rod. The output end of the electric push rod is fixedly connected with a first flat panel detector, the outer wall C arm is rotatably connected with an internal C arm, one end of the internal C arm is fixedly provided with a second electric push rod, the output end of the second electric push rod is fixedly connected with a second flat panel detector, and the inner wall surface of the internal C arm is fixedly provided with a first bulb tube and a second bulb tube; through cooperative rotation of the outer wall C arm and the inner C arm, angle rotation can be carried out, rotary scanning images can be acquired, three-dimensional reconstruction can be carried out, and the imaging quality and precision are improved.

The invention discloses an X-ray tomography in-situ testing device and method suitable for a seawater high-pressure environment. The X-ray tomography in-situ testing device comprises an X-ray source, a collimator, a flat panel detector, a seawater pressure cabin and a seawater pressure control device. During detection, the X-ray source is started, the sample is started to move spirally, the flat panel detector collects projection data, then a cross-sectional image is reconstructed through an existing method, and the X-ray tomography in-situ test of the sample in the seawater high-pressure environment is achieved. In order to solve the problems that a seawater in-situ detection device in the prior art is insufficient in penetrating power, low in resolution ratio, limited in sample movement freedom degree and poor in high-pressure environment adaptability, the invention discloses an X-ray tomography device and method, and in-situ dynamic imaging can be carried out on a large component in a seawater high-pressure environment. In-situ observation of micron-sized damage and defects (100-200 microns) is realized, and meanwhile, an imaging view field is expanded through a multi-degree-of-freedom sample table and a spiral scanning method, so that the detection efficiency is improved.

The invention discloses a dual-energy ray bone mineral density evaluation method based on a flat panel detector, and relates to the technical field of ray evaluation. Through a direct conversion mode of the flat panel detector, high-precision acquisition of low-energy and high-energy ray images is realized, and noise and resolution loss caused by traditional indirect imaging are remarkably reduced; primary correction and secondary correction are completed in the edge calculation nodes, so that the problems of discontinuous gray scale and distorted energy ratio of the boundary area of the skeleton and the soft tissue are effectively solved, and the authenticity of the image boundary is improved; and dynamic smoothing processing of the energy ratio is further combined to obtain a stable ratio image, so that the stability and repeatability of bone mineral density measurement are remarkably enhanced, and more accurate bone mineral density evaluation is realized.

The invention relates to the technical field of cone-beam computed tomography, and discloses a scattering correction method and system for cone-beam computed tomography. The method comprises the following steps: acquiring original projection data and main scattering data acquired by a first flat panel detector; wherein the first flat panel detector is arranged in the emission direction of the radiation source; acquiring secondary scattering data acquired by a second flat panel detector; wherein the second flat panel detector is arranged in the scattering direction of the radiation source; determining target projection data based on the original projection data, the main scattering data and the auxiliary scattering data; the target projection data is used for cone beam computed tomography imaging. According to the method, scattering correction can be completed on the premise of not depending on special hardware, not additionally increasing radiation dose and not losing imaging view, and the imaging precision can be effectively improved.

The present application discloses a radiation flat panel detector and a radiation imaging device, wherein the radiation flat panel detector is characterized in that it includes a substrate and a plurality of composite pixel units formed on the substrate, each composite pixel unit includes a switch element and a conversion component, the switch element is formed on the substrate; the conversion component is formed on the side of the switch element away from the substrate, and includes an imaging element and a detection element, and the orthographic projection of the detection element on the substrate at least partially overlaps with the orthographic projection of the switch element on the substrate. The radiation flat panel detector provided by the present application can achieve a balance between simplified device connection and flat panel detector performance.

The present invention discloses a multi-gain flat-panel detector and a reading data processing method, belonging to the field of image processing. The multi-gain flat-panel detector includes a scintillator layer and a reading circuit layer. Before reading, the reading circuit layer detects and corrects the signal and then outputs the image. Each pixel of the read image corresponds to its own independent thin-film transistor array, control circuit, and analog-to-digital converter, thereby achieving independent pixel reading. In addition, the overall capacitance of the charge amplifier can be adjusted by software control of the switching of the circuit containing the individual capacitors in the charge amplifier, thereby achieving control of the reading gain, solving the problems of data saturation and low data signal-to-noise ratio that are prone to occur in flat-panel detectors.

The utility model discloses an ankle X-ray photography auxiliary device, and relates to the technical field of medical instruments. The ankle X-ray photography auxiliary device comprises a detection table and a side mounting frame, a first placement groove is formed below the detection table; the side mounting frame is arranged on the side edge of the detection table, and a second placement groove is formed in the side mounting frame; the first placing groove and the second placing groove are used for placing flat panel detectors. When the flat panel detector is placed in the first placing groove, the flat panel detector is parallel to the upper supporting surface; when the flat panel detector is placed in the second placing groove, the flat panel detector is obliquely arranged relative to the vertical plane; according to the ankle X-ray photography auxiliary device provided by the utility model, the flat panel detectors are placed in different placing grooves, and the bulb tubes capable of emitting X-rays are correspondingly arranged, so that X-ray photography can be conveniently carried out on the ankle of a patient from multiple angles and directions when the patient stands on a detection table, and the operation is convenient.

The utility model relates to the technical field of nondestructive testing, and provides an auxiliary detection device for x-ray equipment, which comprises a mounting shell, a conveying mechanism is arranged in the mounting shell, a lifting mechanism is jointly arranged on two sides of the inner wall of the mounting shell, and a plurality of rectangular pipes are sequentially and fixedly mounted at the top of the lifting mechanism from left to right. A first motor drives a double-groove synchronous wheel to rotate, a plurality of conveying rollers are driven by a synchronous belt to rotate in a mounting shell and used for conveying a round pipe needing to be detected, and when the round pipe is conveyed to the position above an arc-shaped shell, a second motor drives a screw rod to rotate in a sliding groove plate, so that the round pipe is conveyed to the position above the arc-shaped shell. The linkage sliding block slides in the sliding groove plate, so that the supporting plate ascends and descends upwards and is used for lifting and supporting the round pipe conveyed on the conveying rollers upwards, the rolling wheels are driven by the motor to rotate, the supported round pipe is rotated, and the detection efficiency of the X-ray emitter and the flat panel detector on the round pipe is effectively improved.

The invention provides an X-ray flat panel detector and a preparation method of the X-ray flat panel detector. The X-ray flat panel detector comprises a substrate, a readout circuit layer located on the substrate, an insulating grid layer located on the side, away from the substrate, of the readout circuit layer, a first charge transmission layer located on the side, away from the substrate, of the readout circuit layer, and a perovskite material layer located on the side, away from the substrate, of the first charge transmission layer. The second charge transfer layer is located on one side, away from the substrate, of the perovskite material layer; and the top electrode layer is located on one side, away from the substrate, of the second charge transfer layer. The readout circuit comprises a plurality of pixel units. The insulating grid layer comprises a plurality of meshes, and the orthographic projection of each pixel unit on the substrate is located in the orthographic projection of one mesh on the substrate. The first charge transport layer is filled in the meshes of the insulating grid layer. And the perovskite material layer is filled in the meshes of the insulating grid layer. The X-ray flat panel detector provided by the invention has relatively high image resolution, image contrast and definition.

The invention relates to the technical field of detection devices, in particular to an inclined X-ray horizontal detection device. Comprising a detection lead room and an auxiliary assembly, the auxiliary assembly comprises a detection frame, a ray source, a flat panel detector, a rotary disc, a high-precision rotary bearing, a servo motor, a transmission synchronous belt, a conveying component, a mounting component and a fixing component, the ray source is started when a workpiece is conveyed to a designated position, and when the ray source and the flat panel detector move to a designated angle, a PLC sends out an instruction; the flat panel detector starts to acquire images and performs acquisition while rotating, the servo motor acts to drive the synchronous wheel to rotate, high-precision rotation of the pivotal bearing is realized under the action of the transmission synchronous belt, the radiation source and the flat panel detector can rotate 360 degrees around a workpiece to acquire images, and the acquired images are accurately matched with circumferential rotation movement. According to the X-ray detection device, the number of pictures collected at each angle is consistent, so that the X-ray detection device can be inclined by 15 degrees, the ray penetration path can be reduced, the energy attenuation can be reduced, and the image quality can be improved.

This invention discloses an industrial material inspection method and system based on feature extraction and contrast enhancement, belonging to the field of image inspection technology. It includes: S1, acquiring the transmitted signal using a digital flat panel detector and generating an original digital image based on the differences in X-ray absorption by different materials or defects; S2, performing uniformity correction and normalization enhancement on the original digital image, and achieving preliminary differentiation of different material regions; S3, dividing the original image data into processing domains based on the preliminary differentiation results, and performing differentiated enhancement processing based on the local feature attributes of each processing domain to generate a binary feature image. By integrating X-ray penetration imaging, multi-dimensional image enhancement, and a deep learning-driven intelligent rating system, this invention fundamentally solves the key technical bottlenecks in traditional industrial material inspection, such as inconsistent image quality, lack of material identification, and strong subjectivity in rating, achieving an automated, intelligent, and objective upgrade in industrial material defect detection.

This utility model discloses a vehicle-mounted X-ray whole-body imaging device, including a main frame, a sub-frame, an X-ray tube assembly, and a rectangular flat panel detector. The flat panel detector is mounted on the sub-frame, and the X-ray tube assembly is mounted on the main frame. The side of the flat panel detector closest to the X-ray tube assembly is the receiving surface. The X-ray tube assembly is rotatable about a direction perpendicular to the receiving surface. This vehicle-mounted X-ray whole-body imaging device uses a rectangular flat panel detector, which facilitates large-scale, rapid whole-body exposure imaging by doctors. The X-ray tube assembly can be rotated as needed, facilitating doctors to position the device at different angles for imaging. Using the X-ray tube assembly horizontally shortens the distance required for normal imaging by the flat panel detector, thereby reducing the horizontal space occupied by this vehicle-mounted X-ray whole-body imaging device. Rotating the X-ray tube assembly to a vertical position reduces the risk of damage to the rotating anode due to vibration.

The utility model discloses a portable DR used multi-specification flat panel detector storage structure, comprising a flat panel inner side housing and a flat panel outer side housing, the flat panel outer side housing is detachably installed on the flat panel inner side housing, and the flat panel outer side housing is provided with an adjusting assembly capable of adjusting the width of a placing groove opening of the flat panel outer side housing.

According to the technical scheme, system hardware is composed of a micro-focus ray source, a flat panel detector, a motion platform and a multi-ball standard part (forest ball array), and high-precision data acquisition and processing are achieved in combination with a multi-physics field sensing module and a parallel computing unit. The method comprises the steps of optimizing CT image preprocessing by using an adaptive denoising and hybrid segmentation algorithm, improving the point cloud precision by using a weighted covariance matrix and a dynamic error compensation model, and rapidly extracting a sphere center coordinate through a robust sphere fitting algorithm. In addition, a thermal-mechanical coupling compensation and spinor theory error transfer mechanism is introduced, and the environment temperature and mechanical motion errors are effectively restrained. According to the method, the calibration time is remarkably shortened, the positioning precision is improved to the micron level, the stability of the system in a complex noise and temperature change scene is enhanced, and the method is suitable for efficient microscopic CT system calibration in the precision manufacturing field.

The utility model discloses a shell of an X-ray flat panel detector. The shell comprises two brackets (12), a connecting unit (14) and a sensor mounting part (16), each of the two brackets includes a front end, a rear end, and a body (122) interposed between the front end and the rear end in a direction parallel to a width direction (W) of the X-ray flat panel detector. The body is used for accommodating the side edge of the X-ray flat panel detector. The connecting unit is connected with the two supports, and the connecting unit and the two supports form a containing space to contain the X-ray flat panel detector. The sensor mounting part is arranged on any one of the two brackets and is used for accommodating the positioning sensor; the positioning sensor is used for positioning the X-ray flat panel detector. According to the shell of the X-ray flat panel detector, the position of the X-ray flat panel detector can be accurately positioned, and the X-ray imaging quality is improved. The utility model further provides a detector assembly comprising the shell and a medical imaging system comprising the detector assembly.

The invention discloses a flat panel detector and a method and device for using the flat panel detector. A flat panel detector is constructed on the basis of an amorphous silicon substrate on which a hexagonal pixel pattern is uniformly laid. The hexagonal pixels can be arranged more closely on a two-dimensional plane, and gaps among the pixels are reduced, so that a photosensitive area is maximized with a relatively high filling rate, and the spatial resolution of the detector is improved. And the hexagonal pixels enable a frequency space to generate an angle of 60 degrees, so that the influence of grid artifacts is reduced to a certain extent. Meanwhile, the hexagonal pixel array is effectively processed and optimized by adopting an image reconstruction algorithm, the signal-to-noise ratio of the single pixel of the flat panel detector is improved, and the definition and accuracy of the image are improved.

The utility model discloses a punching machine for punching a COF (chip on film) reading chip of a flat panel detector, which comprises a working table, a transferring mechanism is arranged on the working table, a punching lower die is arranged on the transferring mechanism, a blanking port of a chip is arranged on the punching lower die, and a positioning component for positioning a punching part is further arranged on the punching lower die. A chip on a stamping part is completely stamped into a discharging box through a pressing head on the stamping upper die, automatic stamping of the chip is achieved, meanwhile, the stamping efficiency is high, an operator only needs to align a positioning identification hole in the stamping part with a stamping hole, and the stamping upper die is arranged above the stamping lower die in a vertically-displaceable mode. And therefore, the automatic punching device is simple to operate.

This invention relates to a digital radiographic inspection method and apparatus for wind turbine blades, belonging to the field of wind turbine blade inspection technology. The method includes: placing and fixing the turbine blade on a blade fixture; mounting the X-ray machine on the X-ray machine fixture; defining a detection grid in the inspection area of ​​the turbine blade; tightly attaching and fixing the X-ray flat panel detector to the turbine blade; and sequentially inspecting each grid of the turbine blade according to the detection grid. This invention, through the combination of the blade fixture, the X-ray machine fixture, the X-ray machine, and the X-ray flat panel detector, constitutes a digital radiographic inspection apparatus for turbine blades. This apparatus enables the detection of defects in wind turbine blades. The inspection method of this invention is simple and rapid; the inspection images obtained by this invention can clearly and accurately identify defects in wind turbine blades, with a defect detection rate of 100%.

The utility model discloses a novel digital ray imaging detection tool for nuclear facility welding seam detection, which comprises a fastening assembly, the fastening assembly comprises a clamping jaw and a hooking jaw, the clamping jaw is provided with a groove, the groove abuts against a pipeline to be detected, the clamping jaw is provided with a through hole, the hooking jaw is fixedly connected with a threaded rod, the threaded rod penetrates through the through hole, and the clamping jaw is fixedly connected with the pipeline to be detected. The threaded rod is in threaded connection with a hand-cranking disc; the clamping assembly comprises a cage frame and a flat plate mounting mechanism, the cage frame is used for clamping an X-ray machine, the flat plate mounting mechanism is used for clamping a flat plate detector, a fixing plate is fixedly connected to the clamping jaw, a bottom plate is fixedly connected to the fixing plate, the cage frame is movably arranged on the bottom plate, and a connecting rod is fixedly connected to the flat plate mounting mechanism; and the connecting rods are movably connected with the cage frame. The utility model not only facilitates the installation with the to-be-detected pipeline, but also facilitates the adjustment of the focal length of the ray machine and the flat panel detector, and is very convenient to use.

The present invention relates to the technical field of medical devices, and specifically relates to a medical image acquisition device, which includes a column, a driving motor, a bushing, a flat panel detector, an adjustment mechanism, a support plate, a fixing component, and a push rod; a driving motor is fixedly installed on the column, and a bushing is slidably installed on the driving motor; the bushing is rotatably installed with the flat panel detector; an adjustment mechanism is provided above the bushing. When the flat panel detector performs image acquisition, the adjustment mechanism drives the flat panel detector to deflect; a support plate is fixedly installed on the bushing, a driving cavity is formed on the support plate, a fixing component is installed in the driving cavity, the push rod is located in the driving cavity, and when the flat panel detector deflects, the adjustment mechanism drives the push rod to slide horizontally through the fixing component. The present invention realizes multi-angle adjustment of the flat panel detector through rotational movement, thereby improving the diversity of image data acquisition and the accuracy of acquisition.

A method of manufacturing a pouched product 10 containing a dose of powdered material and an object is disclosed. The powdered material and the object are supplied to an interior volume of a partially-formed pouch formed by a substantially continuous pouch material. The pouch material is then sealed to create the pouched product. An x-ray image of the pouch is obtained to determine one or more of: the presence or absence of the powder and / or object within the pouched product, the quantity of powder and / or objects within the pouched product, the location of the powder and / or object within the pouched product, the condition of the powder and / or object and / or pouch material, and the presence or absence of a foreign object within the pouched product. The image is obtained using an x-ray source 200 and a flat panel detector 220 or a linear detector 320. The pouched product is rejected if the powder and / or object is absent from the pouched product, or if a foreign object is present within the pouched product, or if the quantity of powder within the pouched product does not meet a threshold quantity. If the object is a capsule containing a liquid, the pouched product is rejected if the capsule is in a burst condition or if the powder is wet.

The embodiment of the invention discloses a charging control device, system, method and equipment of a flat panel detector and a medium. The device is connected between a power supply and a battery of the flat panel detector. The switch module is used for disconnecting a charging loop from the power supply to the battery when a first signal is received, and the first signal represents that an X-ray bulb tube of the X-ray photography system is in a preheating state. When the X-ray bulb tube is in a preheating state, the charging loop from the power supply to the battery is disconnected based on the charging control device connected between the power supply and the battery of the flat panel detector, so that electromagnetic interference caused by working while charging of the flat panel detector is prevented, and the imaging quality is improved. When the first signal disappears, the charging loop is switched on after the timing time is up, sufficient working time is provided for the flat panel detector before charging is recovered, and electromagnetic interference caused by charging is effectively prevented.

The utility model discloses an intelligent digital imaging detection center for a pipeline welding seam, which comprises a centering support system, a module driving system, a detection trolley system, a digital imaging system and a PLC (Programmable Logic Controller) intelligent control system, the module driving system clamps a pipe fitting module through lifting and translation adjustment of the module clamping mechanism, the module driving system can drive a workpiece containing the pipe fitting module to rotate, the detection trolley system is arranged on one side of the center supporting system, and the digital imaging system is arranged on the detection trolley system. The detection trolley system can drive an X-ray machine and a flat panel detector of the digital imaging system to translate and lift and drive the X-ray machine to rotate, and the PLC intelligent control system carries out information interaction with the MES system and the digital imaging system and controls the central supporting system, the module driving system and the detection trolley system to act. X-ray detection and image acquisition and processing are carried out on the workpiece welding seam through the digital imaging system.

According to the detection bed of the X-ray photography system and the bed board assembly of the detection bed, the bed board assembly comprises a bed panel and a supporting piece which are arranged in a stacked mode, the lower surface of the bed panel comprises a transmission face and installation faces, the installation faces comprise a first installation face and a second installation face which have height difference, and the upper surface of the supporting piece comprises a supporting face. The supporting surface comprises a first supporting surface and a second supporting surface which have a height difference. As the mounting surface is provided with the first mounting surface and the second mounting surface with the height difference, and the supporting surface is provided with the corresponding first supporting surface and the second supporting surface with the height difference, the bed board assembly can increase the local thickness of the supporting piece and improve the structural strength of the supporting piece under the condition that the overall thickness is relatively thin; the flat panel detector has the advantages of being ultrathin and sufficient in structural strength, the distance between a detected object and the flat panel detector can be shortened by reducing the thickness of the bed board assembly, and the imaging quality can be improved.

The invention discloses an automatic matching method for a working position of an X-ray machine and a flat panel detector, and relates to the technical field of radiographic imagines.The method comprises the steps that pet struggling features are recognized in real time through a motion state classification model, a compensation mechanism is triggered before displacement occurs, and matching delay caused by passive response in the prior art is avoided; the working position of the X-ray machine can synchronously track the position of the detector to ensure that an imaging area accurately covers a key anatomical structure; when the displacement is overtime, the system automatically stops exposure and reversely calibrates the position based on the anatomical mark point; an operator does not need to interrupt flow manual calibration, the repeated exposure risk of the pet is reduced, and the diagnosis and treatment efficiency is improved; the influence of equipment vibration and operation jitter is suppressed by gravity compensation and smooth filtering, and the displacement prediction model is compatible with motion characteristics of pets with different body types; in a narrow clinic or multi-pet assembly line scene, the matching stability is kept; an autonomous decision closed loop is formed from data acquisition, state judgment, real-time tracking to abnormal calibration.

The invention relates to the technical field of display, and discloses a detection substrate, a preparation method and a detection device. The grid electrode of the thin film transistor is positioned on one side of the substrate; the first electrode is located on the side, facing the grid electrode, of the substrate and comprises a first part and a second part, and the second part is located outside the first part; the photoelectric conversion layer is located on the side, away from the substrate, of the first electrode, and the orthographic projection of the photoelectric conversion layer on the substrate is located in the orthographic projection of the first part on the substrate; the second electrode is located on the side, away from the substrate, of the photoelectric conversion layer; the first insulating layer is located on the side, away from the substrate, of the grid electrode and the second electrode, the orthographic projection of the grid electrode and the first electrode on the substrate is located in the orthographic projection of the first insulating layer on the substrate, the first insulating layer is provided with a first via hole, and the orthographic projection of the first via hole on the substrate is at least partially overlapped with the orthographic projection of the second part on the substrate. According to the embodiment of the invention, the yield of the flat panel detector can be improved.

The adjustable bedside X-ray machine auxiliary device comprises a movable frame and a folding plate, the folding plate is arranged at the top of the movable frame, and a flat panel detector is connected with the folding plate; the folding plate comprises a fixed plate and a turnover plate, the turnover plate is rotatably mounted on the fixed plate, and the fixed plate is connected with the moving frame; elastic assemblies are arranged on the periphery of the turnover plate, and the flat panel detector can be clamped between the turnover plate and the elastic assemblies. The turnover plate is rotatably mounted on the fixed plate, and the flat panel detector is quickly mounted on the turnover plate by using the elastic assembly, so that the flat panel detector can be flatly placed at the bottom of a sickbed, and positive shooting (AP position) shooting is realized; the flat panel detector can be erected beside a sickbed to realize side shooting; and a desk and a clip do not need to be found, so that the workload of medical personnel is reduced.