A hybrid detector arrangement and scanning method

Abstract

This application discloses a hybrid detector device and scanning method, relating to the field of computed tomography (CT) technology. The hybrid detector device includes at least one X-ray tube and at least one detector mechanism; the X-ray tube emits X-rays; the at least one detector mechanism corresponds to each of the at least one X-ray tube and receives attenuated X-rays. The detector mechanism includes a flat panel detector assembly and a CT detector assembly, the flat panel detector assembly being fixedly or movably mounted on the CT detector assembly. The hybrid detector device provided by this application can achieve both higher spatial resolution and lower density resolution.

Description

Technical Field

[0001] This application relates to the field of electronic computed tomography (CT) technology, and in particular to a hybrid detector device and scanning method. Background Technology

[0002] Computed tomography (CT) is a device that uses rotating X-rays to irradiate the object being measured, and then processes the images through a computer to obtain a tomographic image (CT image).

[0003] However, the size of individual detector units in existing CT detectors is mostly on the order of millimeters, which greatly limits the spatial resolution of CT systems. As a result, in some examinations, such as bone examinations or inner ear examinations, the spatial resolution of CT detectors cannot meet the examination requirements. Summary of the Invention

[0004] This application provides a hybrid detector device and scanning method that combines higher spatial resolution with lower density resolution.

[0005] This application provides a hybrid detector device, comprising:

[0006] At least one X-ray tube for emitting X-rays;

[0007] At least one detector mechanism is provided, corresponding one-to-one with the at least one X-ray tube. The detector mechanism is used to receive attenuated X-rays. The detector mechanism includes a flat panel detector assembly and a CT detector assembly. The flat panel detector assembly is fixedly installed or movably installed on the CT detector assembly.

[0008] Based on the above technical solutions, the flat panel detector assembly can have micrometer-level resolution and anisotropy, providing high spatial resolution. The CT detector assembly can have low-density resolution. Therefore, the hybrid detector device provided in this application can combine higher spatial resolution and low-density resolution, enabling the hybrid detector device to output higher-quality CT images, facilitating better detection of lesions during medical examinations.

[0009] In some possible implementations, the CT detector assembly includes a first CT detector with a mounting position, the flat panel detector assembly is movably mounted relative to the first CT detector, and the flat panel detector assembly includes a first state bit and a second state bit.

[0010] When the flat panel detector assembly is in the first state position, the flat panel detector assembly is located in the assembly position, and the flat panel detector assembly and the first CT detector jointly receive the attenuated X-rays.

[0011] When the flat panel detector assembly is in the second state position, the flat panel detector assembly is misaligned with the assembly position, and the first CT detector receives the attenuated X-rays.

[0012] In some possible implementations, the flat panel detector assembly is slidably mounted on the first CT detector;

[0013] When the flat panel detector assembly slides relative to the first CT detector, the flat panel detector assembly moves back and forth between the first state position and the second state position.

[0014] In some possible implementations, one side of the flat panel detector assembly is rotatably connected to one side of the first CT detector;

[0015] When the flat panel detector assembly rotates relative to the first CT detector, the flat panel detector assembly swings back and forth between the first state position and the second state position.

[0016] In some possible implementations, the CT detector assembly includes a first CT detector and a second CT detector, the first CT detector having a mounting position, the second CT detector and the flat panel detector assembly being movably mounted relative to the first CT detector, and the second CT detector and the flat panel detector assembly being able to alternately be located in the mounting position.

[0017] In some possible implementations, both the second CT detector and the flat panel detector assembly are slidably mounted relative to the first CT detector.

[0018] In some possible implementations, the sliding direction of the second CT detector is parallel to the sliding direction of the flat panel detector assembly.

[0019] In some possible implementations, the second CT detector is rotatably mounted on one side of the first CT detector, and the flat panel detector assembly is rotatably mounted on the side of the first CT detector away from the second CT detector.

[0020] In some possible implementations, one of the second CT detector and the flat panel detector assembly is slidably mounted relative to the first CT detector, and the other is rotatably mounted relative to the flat panel detector assembly.

[0021] The hybrid detector device further includes a drive mechanism, which is connected to the second CT detector and the flat panel detector assembly respectively. The drive mechanism is used to drive the first CT detector and the flat panel detector assembly to move alternately to the assembly position.

[0022] In addition, this application also provides a hybrid detector scanning method, implemented by the hybrid detector device provided in the above embodiments, the hybrid detector scanning method comprising:

[0023] The X-ray tube emits X-rays;

[0024] The CT detector assembly receives attenuated X-rays and generates a first detection signal, and the flat panel detector assembly receives attenuated X-rays and generates a second detection signal.

[0025] A CT image is generated based on the first detection signal and the second detection signal. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 Schematic diagrams of the hybrid detector device in some embodiments are shown;

[0028] Figure 2 A partial structural schematic diagram of the hybrid detector device in some embodiments is shown;

[0029] Figure 3 A schematic diagram of the detector mechanism in Embodiment 3 is shown;

[0030] Figure 4 Another schematic diagram of the detector mechanism in Embodiment 3 is shown;

[0031] Figure 5 A schematic diagram of the detector mechanism in Embodiment 4 is shown;

[0032] Figure 6 A schematic diagram of the detector mechanism in Embodiment 5 is shown;

[0033] Figure 7 Another schematic diagram of the detector mechanism in Embodiment 5 is shown;

[0034] Figure 8 A schematic diagram of the detector mechanism in Embodiment Six is ​​shown;

[0035] Figure 9 Schematic diagrams of some electrical components of the hybrid detector device in some embodiments are shown;

[0036] Figure 10 A flowchart illustrating the hybrid detector scanning method in some embodiments is shown.

[0037] Explanation of key component symbols:

[0038] 100 - Detector mechanism; 110 - CT detector assembly; 111 - First CT detector; 1111 - Assembly position; 112 - Second CT detector;

[0039] 120 - Flat panel detector assembly; 121 - First status bit; 122 - Second status bit;

[0040] 310 - X-ray tube; 320 - controller; 330 - high voltage generator; 340 - processor;

[0041] 400 - Load-bearing frame; 410 - Support;

[0042] 500-Drive mechanism; 510-Drive component; 520-Support plate; 521-Slide rail; 530-Transmission assembly; 531-Lead screw; 532-Lead screw nut; 533-Rotating shaft; 534-Gear; 535-Rack; 536-Guide rod; 541-Mounting block; 542-Bearing seat; 550-Angle encoder. Detailed Implementation

[0043] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0044] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0046] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0047] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0048] like Figure 2 As shown, a Cartesian coordinate system is established. The length direction of the hybrid detector device is defined to be parallel to the x-axis, the width direction to be parallel to the y-axis, and the height direction to be parallel to the z-axis. It is understood that these definitions are merely for facilitating understanding of the relative positions of the components within the hybrid detector device and should not be construed as limitations on this application.

[0049] Example 1

[0050] The embodiment provides a hybrid detector device that can be used to perform X-ray scanning on human tissue or objects to be detected and generate corresponding CT images.

[0051] like Figures 1 to 4As shown, the hybrid detector device may include at least one X-ray tube 310 and at least one detector mechanism 100. In some embodiments, the hybrid detector device may include a detector mechanism 100 and an X-ray tube 310, with the detector mechanism 100 positioned opposite the X-ray tube 310. During use, the human tissue or object to be detected may be located between the X-ray tube 310 and the detector mechanism 100. The X-ray tube 310 may be used to generate X-rays and project them onto the human tissue or object to be detected. The detector mechanism 100 may receive the attenuated X-rays that have passed through the human tissue or object to be detected and generate a corresponding detection signal to acquire a corresponding CT image.

[0052] In other embodiments, the hybrid detector device may include two detector mechanisms 100 and two X-ray tubes 310, with the two detector mechanisms 100 corresponding one-to-one with the two X-ray tubes 310.

[0053] In some embodiments, the detector assembly 100 may include a CT detector assembly 110 and a flat panel detector assembly 120. The flat panel detector assembly 120 may be fixedly mounted on the CT detector assembly 110, or the flat panel detector assembly 120 may be movably mounted on the CT detector assembly 110. In some embodiments, the flat panel detector assembly 120 may include at least one flat panel detector. Exemplarily, the flat panel detector assembly 120 may include one, two, or four equal numbers of flat panel detectors. When the flat panel detector assembly 120 includes multiple flat panel detectors, the X-ray receiving surfaces of the multiple flat panel detectors may be located on the same plane or curved surface.

[0054] When the flat panel detector assembly 120 is movably mounted on the CT detector assembly 110, the flat panel detector assembly 120 may include a first state position 121 and a second state position 122, and the flat panel detector assembly 120 can switch between the first state position 121 and the second state position 122. When the flat panel detector assembly 120 is in the first state position 121, the flat panel detector assembly 120 and the CT detector assembly 110 can simultaneously face the X-ray tube 310, and the flat panel detector assembly 120 can cooperate with the CT detector assembly 110 to receive the attenuated X-rays that have passed through the human tissue or object to be detected, and generate corresponding detection signals respectively. When the flat panel detector assembly 120 is in the second state position 122, the flat panel detector assembly 120 can be moved to one side of the CT detector assembly 110, and the CT detector assembly 110 can receive the attenuated X-rays that have passed through the human tissue or object to be detected to generate corresponding detection signals. That is, in this state, the flat panel detector assembly 120 may not be working.

[0055] In this embodiment, the flat panel detector assembly 120 has a resolution on the order of micrometers and is anisotropic, providing high spatial resolution. The CT detector assembly 110 may have low-density resolution. Thus, the hybrid detector device provided in this application can combine higher spatial resolution and low-density resolution, enabling the hybrid detector device to output higher quality CT images, facilitating better detection of lesions during medical examinations.

[0056] like Figure 1 As shown, it can be understood that the hybrid detector device also includes a support frame 400, one end of which may be configured with a near-circular bracket 410, the X-ray tube 310 may be installed at one end of the bracket 410, and the detector mechanism 100 may be installed at the other end of the bracket 410 opposite to the X-ray tube 310.

[0057] Combined again Figure 9 The hybrid detector device also includes a controller 320, a high-voltage generator 330, and at least one processor 340. The controller 320 can be electrically connected to other electrical components in the hybrid detector device and can be used to control the operation of each electrical component in the hybrid detector device.

[0058] The high-voltage generator 330 can be electrically connected to the X-ray tube 310. During operation, the high-voltage generator 330 can supply a stable DC high voltage to the X-ray tube 310, and at the same time, it can provide the voltage required for the rotating anode and the tube current for the filament so that the X-ray tube 310 can generate X-rays.

[0059] At least one processor 340 may be used to receive and process detection signals generated by the detector assembly 100 to generate corresponding CT images. In some embodiments, the hybrid detector device may include a processor 340 that may be used simultaneously to receive and process detection signals generated by the flat panel detector assembly 120 and the CT detector assembly 110, and generate CT images based on the detection signals from both.

[0060] In other embodiments, the hybrid detector device may include a first processor and a second processor, wherein the first processor is used to receive and process detection signals generated by the CT detector assembly 110, and the second processor is used to receive and process detection signals generated by the flat panel detector assembly 120. The first processor may cooperate with the second processor to generate CT images.

[0061] Example 2

[0062] The embodiment provides a hybrid detector device, which further improves upon embodiment one:

[0063] like Figure 2As shown, in some embodiments, the CT detector assembly 110 may include a first CT detector 111. The first CT detector 111 may have an arcuate structure and be opposite to the X-ray tube 310. Additionally, the first CT detector 111 is provided with a mounting position 1111, which may be located on the side of the first CT detector 111 closest to the X-ray tube 310, and may be located in the middle of the first CT detector 111. The flat panel detector assembly 120 may be fixedly mounted on the first CT detector 111 by means of snap-fit, screw connection, or adhesive bonding, and is located at the mounting position 1111.

[0064] In some embodiments, the flat panel detector assembly 120 may protrude from the X-ray receiving arc surface of the first CT detector 111. Additionally, the X-ray receiving surface of the flat panel detector assembly 120 may face the X-ray tube 310.

[0065] In other embodiments, the flat panel detector assembly 120 may also be fixedly embedded in the first CT detector 111, and the X-ray receiving surface of the flat panel detector assembly 120 may be connected to the X-ray receiving arc surface of the first CT detector 111. Alternatively, the end of the flat panel detector assembly 120 near the X-ray tube 310 may partially protrude from the side of the first CT detector 111 near the X-ray tube 310. Or, the flat panel detector assembly 120 may be recessed relative to the first CT detector 111.

[0066] In other embodiments, the mounting position 1111 may also be offset to one side of the middle of the first CT detector 111, or located at one end of the first CT detector 111.

[0067] During operation, the X-ray tube 310 emits X-rays towards the human tissue or object to be examined. After the X-rays attenuate as they pass through the tissue or object, they are received by the first CT detector 111 and the flat panel detector assembly 120. The first CT detector 111 converts the received X-rays into a corresponding first detection signal and sends it to the processor 340. The flat panel detector assembly 120 converts the received X-rays into a second detection signal and sends it to the processor 340. The processor 340 receives and processes the first and second detection signals to generate corresponding CT images. Both the first and second detection signals can be digital signals.

[0068] Example 3

[0069] The embodiment provides a hybrid detector device, which further improves upon embodiment one:

[0070] like Figures 2 to 4As shown, the CT detector assembly 110 may include a first CT detector 111. The first CT detector 111 may be arc-shaped and opposite to the X-ray tube 310. The first CT detector 111 may be configured with a mounting position 1111, which may be located approximately in the middle of the first CT detector 111. In some embodiments, the mounting position 1111 may be a notch structure formed in the first CT detector 111.

[0071] In some embodiments, the flat panel detector assembly 120 may be slidably mounted relative to the first CT detector 111, and the sliding direction may be parallel to the width direction of the hybrid detector device. The flat panel detector assembly 120 may include a first state position 121 and a second state position 122 disposed along the sliding direction.

[0072] When the flat panel detector assembly 120 is in the first state position 121, it can be in the assembly position 1111, and the X-ray receiving surface of the flat panel detector assembly 120 can face the X-ray tube 310. During operation, the flat panel detector assembly 120 and the first CT detector 111 can jointly receive the attenuated X-rays. Specifically, the first CT detector 111 can generate a first detection signal based on the received X-rays and send it to the processor 340, and the flat panel detector assembly 120 can generate a second detection signal based on the received X-rays and send it to the processor 340.

[0073] When the flat panel detector assembly 120 is in the second state position 122, the flat panel detector assembly 120 can be misaligned with the assembly position 1111, and the flat panel detector assembly 120 can be located on one side of the first CT detector 111. During operation, the attenuated X-rays can be received by the first CT detector 111, and the flat panel detector assembly 120 can be inactive.

[0074] In this embodiment, the hybrid detector device further includes a drive mechanism 500, which can be used to drive the flat panel detector assembly 120 to and from the first state position 121 and the second state position 122.

[0075] In some embodiments, the drive mechanism 500 may include a drive member 510, a transmission assembly 530, and a support plate 520. The support plate 520 may be fixedly mounted relative to the first CT detector 111 and may extend to the mounting position 1111 of the first CT detector 111.

[0076] The flat panel detector assembly 120 is slidably mounted on the support plate 520 near the X-ray tube 310 along the width direction of the hybrid detector device. The drive unit 510 is fixedly mounted on the support plate 520. The transmission assembly 530 is driveably connected between the drive unit 510 and the flat panel detector assembly 120. The drive unit 510 drives the transmission assembly 530 to operate, and the transmission assembly 530 drives the flat panel detector assembly 120 to move along the width direction of the hybrid detector device, so that the flat panel detector assembly 120 reciprocates between the first state position 121 and the second state position 122.

[0077] In some embodiments, the drive unit 510 may be a motor. The transmission assembly 530 may include a lead screw 531 and a lead screw nut 532. The lead screw 531 may extend along the width direction of the hybrid detector device. Both ends of the lead screw 531 may be rotatably mounted on the side of the support plate 520 near the X-ray tube 310 via a mounting block 541. Specifically, the mounting block 541 may be fixedly mounted on the support plate 520, both ends of the lead screw 531 may be rotatably mounted on the corresponding mounting blocks 541, and one end of the lead screw 531 may be connected to the output shaft of the drive unit 510. The lead screw nut 532 may be screwed onto the lead screw 531, and the flat panel detector assembly 120 may be fixedly mounted on the lead screw nut 532.

[0078] In some embodiments, the end of the lead screw 531 away from the drive member 510 is also connected to an angle encoder 550, which can be used to detect the rotation of the lead screw 531, thereby realizing the detection of the movement of the flat panel detector assembly 120, so as to ensure that the flat panel detector assembly 120 moves accurately to the first state position 121 and the second state position 122.

[0079] In addition, a slide rail 521 extending along the width direction of the hybrid detector device is protruding from the side of the support plate 520 near the X-ray tube 310. The two slide rails 521 can be respectively disposed on both sides of the lead screw 531. Two sliders can be disposed on the side of the flat panel detector assembly 120 near the support plate 520. The two sliders can slide and engage with the two slide rails 521 one by one.

[0080] During use, the drive unit 510 can drive the lead screw 531 to rotate. Due to the restriction of the slide rail 521, the flat panel detector assembly 120 and the lead screw nut 532 will not rotate relative to the lead screw 531. Consequently, the lead screw nut 532 can move along the lead screw 531 and drive the flat panel detector assembly 120 to move synchronously, so that the flat panel detector assembly 120 can move back and forth between the first state position 121 and the second state position 122.

[0081] In other embodiments, the drive unit 510 may also be a cylinder, hydraulic cylinder or electric push rod, etc. The flat panel detector assembly 120 may be directly connected to the output end of the drive unit 510 and may be moved by the drive unit 510.

[0082] In another embodiment, the flat panel detector assembly 120 can also slide in conjunction with the support plate 520 via structures such as rollers, V-wheels, or bearings.

[0083] In another embodiment, the transmission assembly 530 may also be a rack and pinion or a synchronous belt to realize the transmission between the drive unit 510 and the flat panel detector assembly 120.

[0084] In other embodiments, the sliding direction of the flat panel detector assembly 120 relative to the first CT detector 111 may be parallel to the height direction of the hybrid detector device. A first state position 121 may be located at the assembly position 1111 of the first CT detector 111. A second state position 122 may be located below the first CT detector 111. Accordingly, structures such as the lead screw 531 and slide rail 521 in the drive mechanism 500 may be arranged along the height direction of the hybrid detector device.

[0085] Example 4

[0086] This embodiment provides a hybrid detector device, which differs from Embodiment 3 in the following ways:

[0087] Combined again Figure 5 The flat panel detector assembly 120 is rotatably mounted relative to the first CT detector 111.

[0088] Specifically, in the width direction of the hybrid detector device, two bearing seats 542 protrude from one side of the first CT detector 111, and both bearing seats 542 are fixedly installed relative to the first CT detector 111. In addition, the two bearing seats 542 can be respectively disposed at both ends of the assembly position 1111 along the length direction of the hybrid detector device.

[0089] In some embodiments, the transmission assembly 530 may include a rotating shaft 533. The two ends of the rotating shaft 533 are rotatably mounted on two bearing seats 542, and a bearing (not shown) may be provided between the rotating shaft 533 and the bearing seats 542. One side of the flat panel detector assembly 120 parallel to the length direction of the hybrid detector device may be fixedly mounted on the rotating shaft 533, and the flat panel detector assembly 120 may be located between the two bearing seats 542.

[0090] In this embodiment, the drive element 510 can be a motor. The motor can be located at one end of the rotating shaft 533, and the output shaft of the drive element 510 is connected to the rotating shaft 533 in a transmission manner. Additionally, the drive element 510 can be fixedly mounted on the first CT detector 111. During use, the drive element 510 can drive the rotating shaft 533 to rotate, and the rotating shaft 533 can drive the flat panel detector assembly 120 to swing. In this embodiment, the mounting position 1111 can be located on the swing path of the flat panel detector assembly 120.

[0091] When the flat panel detector assembly 120 is in the first state position 121, it can swing to the assembly position 1111 and fill the assembly position 1111. The X-ray receiving surface of the flat panel detector assembly 120 can be approximately connected to the arc-shaped X-ray receiving surface of the first CT detector 111. During operation, the flat panel detector assembly 120 and the first CT detector 111 jointly receive the attenuated X-rays after they have passed through the human tissue or object to be detected, and generate corresponding detection signals respectively. The processor 340 can then generate corresponding CT images based on the detection signals generated by the flat panel detector assembly 120 and the first CT detector 111.

[0092] When the flat panel detector assembly 120 is in the second state position 122, the drive unit 510 can drive the flat panel detector assembly 120 to swing to a position approximately parallel to the height direction of the hybrid detector device and located on one side of the first CT detector 111. The X-ray receiving surface of the flat panel detector assembly 120 can face or move away from the first CT detector 111. During operation, the first CT detector 111 can receive the attenuated X-rays that have passed through the human tissue or object to be detected and generate a corresponding detection signal to be sent to the processor 340. The processor 340 can generate a corresponding CT image based on the detection signal generated by the first CT detector 111.

[0093] In some embodiments, the drive mechanism 500 further includes an angle encoder 550, which may be connected to the end of the shaft 533 away from the drive member 510. The angle encoder 550 can be used to control the rotational stroke of the shaft 533, and in turn, to control the oscillation stroke of the flat panel detector assembly 120.

[0094] In other embodiments, the drive unit 510 may also be a cylinder, hydraulic cylinder, or electric actuator. The transmission assembly 530 may also include a meshing rack and gear, with the gear fixedly mounted on one end of the rotating shaft 533 and the rack 535 connected to the output shaft of the drive unit 510.

[0095] In other embodiments, the transmission assembly 530 may also be equipped with a synchronous belt and synchronous pulley, etc., to transmit power.

[0096] Example 5

[0097] The embodiment provides a hybrid detector device, which, based on embodiment one, further includes:

[0098] like Figure 2 , Figure 6 and Figure 7 As shown, the CT detector assembly 110 includes a first CT detector 111 and a second CT detector 112. The first CT detector 111 may be arc-shaped, and may be configured with a notch-shaped mounting position 1111. In some embodiments, the mounting position 1111 may be located at the center of the first CT detector 111 along the length direction of the hybrid detector device.

[0099] In other embodiments, the mounting position 1111 may also be offset to one side of the middle of the first CT detector 111 or located at one end of the first CT detector 111 along the length direction of the hybrid detector device.

[0100] The second CT detector 112 can also be an arc-shaped structure, and it is adapted to the notch structure of the mounting position 1111. That is, the second CT detector 112 can be mounted in the mounting position 1111.

[0101] Both the second CT detector 112 and the flat panel detector assembly 120 can be slidably mounted relative to the first CT detector 111. The sliding direction of the second CT detector 112 and the sliding direction of the flat panel detector assembly 120 are parallel to the width direction of the hybrid detector device, and the second CT detector 112 and the flat panel detector assembly 120 are coaxially arranged.

[0102] In this embodiment, the hybrid detector device further includes a drive mechanism 500, which may include a drive element 510, a transmission assembly 530, and a support plate 520. The support plate 520 may be fixedly mounted relative to the first CT detector 111. The support plate 520 may pass through the mounting position 1111 along the width direction of the hybrid detector device and extend to both sides of the first CT detector 111.

[0103] The flat panel detector assembly 120 and the second CT detector 112 are both slidably mounted on the support plate 520 near the X-ray tube 310 along the width direction of the hybrid detector device. The drive unit 510 can be fixedly mounted on the support plate 520. The transmission assembly 530 is driveably connected between the drive unit 510 and the flat panel detector assembly 120 and the second CT detector 112. The drive unit 510 can drive the transmission assembly 530 to operate, and the transmission assembly 530 drives the flat panel detector assembly 120 and the second CT detector 112 to move along the width direction of the hybrid detector device.

[0104] When the flat panel detector assembly 120 is in the first state position 121, that is, when the flat panel detector assembly 120 has moved to the assembly position 1111, the second CT detector 112 can be located on one side of the flat panel detector assembly 120. During operation, the flat panel detector assembly 120 and the first CT detector 111 can jointly receive the attenuated X-rays after passing through the human tissue or object to be detected, respectively generating corresponding detection signals and transmitting them to the processor 340. The processor 340 can generate corresponding CT images based on the detection signals generated by the flat panel detector assembly 120 and the first CT detector 111. In addition, the second CT detector 112 can be in a non-operating state.

[0105] When the flat panel detector assembly 120 is in the second state position 122, it can be misaligned with the assembly position 1111. Correspondingly, along the width direction of the hybrid detector device, the flat panel detector assembly 120 can be located on one side of the first CT detector 111, and the second CT detector 112 can be located at the assembly position 1111. During operation, the second CT detector 112 and the first CT detector 111 can jointly receive attenuated X-rays after passing through the human tissue or object being detected, generating corresponding detection signals which are transmitted to the processor 340. The processor 340 can generate corresponding CT images based on the detection signals generated by the second CT detector 112 and the first CT detector 111. Additionally, the flat panel detector assembly 120 can be in a non-operating state.

[0106] In some embodiments, the drive unit 510 may be a motor. The transmission assembly 530 may include a lead screw 531 and two lead screw nuts 532. The lead screw 531 may extend along the width direction of the hybrid detector device. Both ends of the lead screw 531 may be rotatably mounted on the side of the support plate 520 near the X-ray tube 310 via a mounting block 541. Specifically, the mounting block 541 may be fixedly mounted on the support plate 520, and both ends of the lead screw 531 may be rotatably mounted on the corresponding mounting blocks 541, and one end of the lead screw 531 may be connected to the output shaft of the drive unit 510. Both lead screw nuts 532 are screwed onto the lead screw 531, and the flat panel detector assembly 120 and the second CT detector 112 may be fixedly mounted on the two lead screw nuts 532 one-to-one.

[0107] In some embodiments, the end of the lead screw 531 away from the drive member 510 is also connected to an angle encoder 550, which can be used to detect the rotation of the lead screw 531, thereby realizing the detection of the movement stroke of the flat panel detector assembly 120 and the second CT detector 112, so as to ensure the accuracy of the movement of the flat panel detector assembly 120 and the second CT detector 112.

[0108] In addition, the support plate 520 near the X-ray tube 310 has two protruding slide rails 521 extending along the width direction of the hybrid detector device. These two slide rails 521 can be respectively disposed on both sides of the lead screw 531. The flat panel detector assembly 120 near the support plate 520 may have two sliders, which can slide in a one-to-one correspondence with the two slide rails 521. The second CT detector 112 near the support plate 520 also has two sliders, which are slidably mounted on the two slide rails 521. In this embodiment, the flat panel detector assembly 120 and the second CT detector 112 can be arranged side-by-side along the width direction of the hybrid detector device.

[0109] During use, the drive unit 510 can drive the lead screw 531 to rotate. Due to the restriction of the slide rail 521, the flat panel detector assembly 120 and the second CT detector 112 will not rotate relative to the lead screw 531. Consequently, the two lead screw nuts 532 can move along the lead screw 531 and drive the flat panel detector assembly 120 and the second CT detector 112 to move synchronously, so that the flat panel detector assembly 120 and the second CT detector 112 can alternately move back and forth in the assembly position 1111.

[0110] In other embodiments, the drive unit 510 may also be a cylinder, hydraulic cylinder or electric push rod, etc. The flat panel detector assembly 120 and the second CT detector 112 may be connected to the output end of the drive unit 510, and the drive unit 510 may push the flat panel detector assembly 120 and the second CT detector 112 to move.

[0111] In another embodiment, both the flat panel detector assembly 120 and the second CT detector 112 can slide in conjunction with the support plate 520 via structures such as rollers, V-wheels, or bearings.

[0112] In another embodiment, the transmission assembly 530 may also be a rack and pinion or a synchronous belt to realize the transmission between the drive unit 510 and the flat panel detector assembly 120 and the second CT detector 112.

[0113] In other embodiments, the sliding direction of the flat panel detector assembly 120 relative to the first CT detector 111 may be parallel to the height direction of the hybrid detector device, and the sliding direction of the second CT detector 112 relative to the first CT detector 111 may be parallel to the width direction of the hybrid detector device. That is, the sliding direction of the second CT detector 112 is perpendicular to the sliding direction of the flat panel detector assembly 120. Correspondingly, both the flat panel detector assembly 120 and the second CT detector 112 can be configured with a driving mechanism 500 for driving the flat panel detector assembly 120 and the second CT detector 112 to slide relative to the first CT detector 111, respectively. Alternatively, the sliding direction of the flat panel detector assembly 120 relative to the first CT detector 111 may be parallel to the width direction of the hybrid detector device, and the sliding direction of the second CT detector 112 relative to the first CT detector 111 may be parallel to the height direction of the hybrid detector device.

[0114] Example 6

[0115] The embodiment provides a hybrid detector device, which, based on embodiment one, further includes:

[0116] Combined again Figure 8 The CT detector assembly 110 includes a first CT detector 111 and a second CT detector 112. The first CT detector 111 may be arc-shaped and may have a notched mounting position 1111. In some embodiments, the mounting position 1111 may be located at the center of the first CT detector 111 along the length of the hybrid detector device.

[0117] In other embodiments, the mounting position 1111 may also be offset to one side of the middle of the first CT detector 111 or located at one end of the first CT detector 111 along the length direction of the hybrid detector device.

[0118] The second CT detector 112 can also be an arc-shaped structure, and it is adapted to the notch structure of the mounting position 1111. That is, the second CT detector 112 can be mounted in the mounting position 1111.

[0119] In this embodiment, the flat panel detector assembly 120 is rotatably mounted relative to the first CT detector 111. The second CT detector 112 is slidably mounted relative to the first CT detector 111, and the sliding direction of the second CT detector 112 is parallel to the width direction of the hybrid detector device.

[0120] In this embodiment, the hybrid detector device further includes a drive mechanism 500, which can be connected to the flat panel detector assembly 120 and the second CT detector 112 respectively to drive the flat panel detector assembly 120 and the second CT detector 112 to alternately move back and forth in the assembly position 1111.

[0121] The drive mechanism 500 may include a drive element 510 and a transmission assembly 530. The transmission assembly 530 may include a rotating shaft 533, a gear 534, and a rack 535. In this embodiment, two bearing seats 542 may protrude from one side of the first CT detector 111, and both bearing seats 542 are fixedly mounted relative to the first CT detector 111. Furthermore, the two bearing seats 542 may be located at both ends of the mounting position 1111 along the length of the hybrid detector device.

[0122] Both ends of the rotating shaft 533 can be rotatably mounted on two bearing seats 542 in a corresponding manner, and a bearing (not shown) can be provided between the rotating shaft 533 and the bearing seats 542. One side of the flat panel detector assembly 120 parallel to the length direction of the hybrid detector device can be fixedly mounted on the rotating shaft 533, and the flat panel detector assembly 120 can be located between the two bearing seats 542.

[0123] In this embodiment, the drive component 510 may be a motor. The motor may be located at one end of the rotating shaft 533, and the output shaft of the drive component 510 is connected to the rotating shaft 533 in a transmission manner. In addition, the drive component 510 may be fixedly installed relative to the first CT detector 111. During use, the drive component 510 drives the rotating shaft 533 to rotate, and the rotating shaft 533 drives the flat panel detector assembly 120 to swing. The mounting position 1111 may be located on the swing path of the flat panel detector assembly 120.

[0124] Gear 534 can be fixedly mounted on one end of rotating shaft 533 near drive member 510, or gear 534 can be fixedly mounted on the output shaft of drive member 510. When drive member 510 drives rotating shaft 533 to rotate, it can drive gear 534 to rotate synchronously. Rack 535 can mesh with gear 534. In addition, rack 535 can slide through the first CT detector 111 along the width direction of the hybrid detector device, and rack 535 can be fixedly connected to second CT detector 112. When drive member 510 drives gear 534 to rotate, it can drive rack 535 to move along the width direction of hybrid detector device, and rack 535 drives second CT detector 112 to move along the width direction of hybrid detector device. In the embodiment, mounting position 1111 can be located on the movement path of second CT detector 112.

[0125] In some embodiments, the end of the second CT detector 112 away from the rack 535 is connected to the guide rod 536, the guide rod 536 may be parallel to the rack 535, and the guide rod 536 may slide through the first CT detector 111.

[0126] When the flat panel detector assembly 120 is in the first state position 121, it can be located at the assembly position 1111. The second CT detector 112 can be offset from the assembly position 1111 and located to one side of the first CT detector 111. During operation, the flat panel detector assembly 120 and the first CT detector 111 can jointly receive the attenuated X-rays after passing through the human tissue or object to be detected, respectively generating corresponding detection signals and transmitting them to the processor 340. The processor 340 can generate corresponding CT images based on the detection signals generated by the flat panel detector assembly 120 and the first CT detector 111. In addition, the second CT detector 112 can be in a non-operating state.

[0127] When it is necessary to switch the positions of the flat panel detector assembly 120 and the second CT detector 112, the drive unit 510 can drive the rotating shaft 533 and the gear 534 to rotate synchronously. When the rotating shaft 533 rotates, it drives the flat panel detector assembly 120 to rotate synchronously, causing the flat panel detector assembly 120 to gradually swing away from the X-ray tube 310 until it rotates to the side of the first CT detector 111. The flat panel detector assembly 120 is approximately parallel to the height direction of the hybrid detector device, and correspondingly, the flat panel detector assembly 120 switches to the second state position 122. Simultaneously, the gear 534 drives the rack 535 to move, causing the second CT detector 112 to gradually move along the width direction of the hybrid detector device towards the assembly position 1111 until it reaches the assembly position 1111.

[0128] When the flat panel detector assembly 120 is in the second state position 122, it is misaligned with the assembly position 1111, allowing the second CT detector 112 to be positioned at the assembly position 1111. During operation, the second CT detector 112 and the first CT detector 111 can jointly receive attenuated X-rays after they have passed through the human tissue or object being inspected, generating corresponding detection signals which are then transmitted to the processor 340. The processor 340 can generate corresponding CT images based on the detection signals generated by the second CT detector 112 and the first CT detector 111. Alternatively, the flat panel detector assembly 120 can be in a non-operating state.

[0129] When the flat panel detector assembly 120 switches from the second state position 122 to the first state position 121, the drive member 510 can drive the rotating shaft 533 and the gear 534 to rotate synchronously. When the rotating shaft 533 rotates, it drives the flat panel detector assembly 120 to rotate synchronously, causing the flat panel detector assembly 120 to gradually swing towards the side closer to the X-ray tube 310, until the flat panel detector assembly 120 swings to be opposite the X-ray tube 310 and is in the assembly position 1111. Correspondingly, the flat panel detector assembly 120 switches to the first state position 121. Simultaneously, the gear 534 drives the rack 535 to move, causing the second CT detector 112 to gradually move away from the assembly position 1111 along the width direction of the hybrid detector device, until it moves to the side of the first CT detector 111 away from the drive member 510.

[0130] In some embodiments, the drive mechanism 500 further includes an angle encoder 550, which may be mounted on the end of the shaft 533 away from the drive member 510. The angle encoder 550 can be used to detect the rotational stroke of the shaft 533 and the gear 534, and then detect the swing stroke of the flat panel detector assembly 120 and the movement stroke of the second CT detector 112, to ensure that the flat panel detector assembly 120 and the second CT detector 112 are moved into place.

[0131] In other embodiments, the second CT detector 112 may be rotatably mounted relative to the first CT detector 111. The flat panel detector assembly 120 may be slidably mounted relative to the first CT detector 111, and the sliding direction of the flat panel detector assembly 120 may be parallel to the width direction of the hybrid detector device.

[0132] In other embodiments, both the second CT detector 112 and the flat panel detector assembly 120 are rotatably mounted relative to the first CT detector 111. Specifically, the flat panel detector assembly 120 is rotatably mounted on one side of the first CT detector 111, and the second CT detector 112 is rotatably mounted on the side of the first CT detector 111 that is away from the flat panel detector assembly 120. The flat panel detector assembly 120 and the second CT detector 112 may each be equipped with a drive mechanism 500. The flat panel detector assembly 120 and the second CT detector 112 can alternately swing back and forth to the mounting position 1111.

[0133] Example 7

[0134] like Figure 10 As shown, the embodiment also provides a hybrid detector scanning method, which can be implemented using the hybrid detector device provided in the embodiment. In the embodiment, the hybrid detector scanning method may include:

[0135] S100, X-ray tube 310 emits X-rays.

[0136] X-ray tube 310 can emit X-rays towards human tissue or objects to be inspected.

[0137] S200, the CT detector assembly 110 receives the attenuated X-rays and generates a first detection signal, and the flat panel detector assembly 120 receives the attenuated X-rays and generates a second detection signal.

[0138] Understandably, X-rays attenuate as they pass through human tissue or objects. Furthermore, the CT detector assembly 110 and the flat panel detector assembly 120 can transmit the generated detection signals to the processor 340.

[0139] S300 generates CT images based on the first detection signal and the second detection signal.

[0140] In this embodiment, the processor 340 can generate a corresponding CT image based on the detection information generated by the CT detector assembly 110 and the flat panel detector assembly 120.

[0141] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0142] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A hybrid detector device, characterized in that, include: At least one X-ray tube for emitting X-rays; At least one detector mechanism is provided, corresponding one-to-one with the at least one X-ray tube. The detector mechanism is used to receive attenuated X-rays. The detector mechanism includes a flat panel detector assembly and a CT detector assembly. The flat panel detector assembly is movably mounted on the CT detector assembly. The CT detector assembly includes a first CT detector and a second CT detector. The first CT detector is provided with a mounting position. The second CT detector and the flat panel detector assembly are both movably mounted relative to the first CT detector. A driving mechanism is provided on one side of the first CT detector or through the assembly position. The driving mechanism is connected to the second CT detector and the flat panel detector assembly respectively. The driving mechanism is used to drive the second CT detector and the flat panel detector assembly to move alternately to the assembly position. When the flat panel detector moves to the assembly position, the X-ray receiving surface of the flat panel detector is connected to the X-ray receiving surface of the first CT detector.

2. The hybrid detector device according to claim 1, characterized in that, The CT detector assembly includes a first CT detector with a mounting position, and the flat panel detector assembly is movably mounted relative to the first CT detector. The flat panel detector assembly includes a first state position and a second state position. When the flat panel detector assembly is in the first state position, the flat panel detector assembly is located in the assembly position, and the flat panel detector assembly and the first CT detector jointly receive the attenuated X-rays. When the flat panel detector assembly is in the second state position, the flat panel detector assembly is misaligned with the assembly position, and the first CT detector receives the attenuated X-rays.

3. The hybrid detector device according to claim 2, characterized in that, The flat panel detector assembly is slidably mounted on the first CT detector; When the flat panel detector assembly slides relative to the first CT detector, the flat panel detector assembly moves back and forth between the first state position and the second state position.

4. The hybrid detector device according to claim 2, characterized in that, One side of the flat panel detector assembly is rotatably connected to one side of the first CT detector; When the flat panel detector assembly rotates relative to the first CT detector, the flat panel detector assembly swings back and forth between the first state position and the second state position.

5. The hybrid detector device according to claim 1, characterized in that, Both the second CT detector and the flat panel detector assembly are slidably mounted relative to the first CT detector.

6. The hybrid detector device according to claim 5, characterized in that, The sliding direction of the second CT detector is parallel to the sliding direction of the flat panel detector assembly.

7. The hybrid detector device according to claim 1, characterized in that, The second CT detector is rotatably mounted on one side of the first CT detector, and the flat panel detector assembly is rotatably mounted on the side of the first CT detector away from the second CT detector.

8. The hybrid detector device according to claim 1, characterized in that, In the second CT detector and the flat panel detector assembly, one is slidably mounted relative to the first CT detector, and the other is rotatably mounted relative to the flat panel detector assembly.

9. A hybrid detector scanning method, characterized in that, Implemented by the hybrid detector device as described in any one of claims 1 to 8, the hybrid detector scanning method includes: The X-ray tube emits X-rays; The CT detector assembly receives attenuated X-rays and generates a first detection signal, and the flat panel detector assembly receives attenuated X-rays and generates a second detection signal. A CT image is generated based on the first detection signal and the second detection signal.

Images