CN-116784870-B - Hybrid detector device and scanning method

CN116784870BCN 116784870 BCN116784870 BCN 116784870BCN-116784870-B

Abstract

The application discloses a hybrid detector device and a scanning method, and relates to the technical field of electronic computer tomography. The hybrid detector device comprises at least one X-ray tube and at least one detector mechanism, wherein the X-ray tube is used for emitting X-rays, the at least one detector mechanism is opposite to the at least one X-ray tube in a one-to-one correspondence manner, the detector mechanism is used for receiving the attenuated X-rays, the detector mechanism comprises a flat panel detector assembly and a CT detector assembly, and the flat panel detector assembly is fixedly mounted or movably mounted on the CT detector assembly. The hybrid detector device provided by the application can have higher spatial resolution and low-density resolution.

Inventors

FENG JIE
ZHU LIMING
HU YUANMING
LIU YUBAO
Fu Fengbin

Assignees

深圳安科高技术股份有限公司

Dates

Publication Date: 20260505
Application Date: 20230625

Claims (9)

1. A hybrid detector assembly, comprising: At least one X-ray tube for emitting X-rays; The detector mechanism is opposite to the at least one X-ray tube in a one-to-one correspondence manner and is used for receiving attenuated X-rays, and the detector mechanism comprises a flat panel detector assembly and a CT detector assembly, wherein the flat panel detector assembly is movably arranged on the CT detector assembly; The driving mechanism is arranged on one side of the first CT detector or penetrates through the assembly position, the driving mechanism is respectively in transmission connection with the second CT detector and the flat panel detector component, the driving mechanism is used for driving the second CT detector and the flat panel detector component to move to the assembly position in an alternating mode, and when the flat panel detector moves to the assembly position, the X-ray receiving surface of the flat panel detector is connected with the X-ray receiving surface of the first CT detector.
2. The hybrid detector device of claim 1, wherein the CT detector assembly comprises a first CT detector having an assembly bit disposed thereon, the flat panel detector assembly movably mounted relative to the first CT detector, the flat panel detector assembly comprising a first state bit and a second state bit; when the flat panel detector assembly is in the first state position, the flat panel detector assembly is positioned in the assembly position, and the flat panel detector assembly and the first CT detector jointly receive attenuated X-rays; when the flat panel detector assembly is in the second state position, the flat panel detector assembly is positioned in dislocation with the assembly, and the first CT detector receives attenuated X-rays.
3. The hybrid detector device of claim 2, wherein the flat panel detector assembly is slidably mounted to the first CT detector; The flat panel detector assembly moves back and forth between the first state position and the second state position as the flat panel detector assembly slides relative to the first CT detector.
4. The hybrid detector assembly of claim 2, wherein one side of the flat panel detector assembly is rotatably coupled to one side of the first CT detector; the flat panel detector assembly swings back and forth between the first state position and the second state position as the flat panel detector assembly rotates relative to the first CT detector.
5. The hybrid detector device of claim 1, wherein the second CT detector and the flat panel detector assembly are each slidably mounted with respect to the first CT detector.
6. The hybrid detector device of claim 5, wherein the sliding direction of the second CT detector is parallel to the sliding direction of the flat panel detector assembly.
7. The hybrid detector assembly of claim 1, wherein the second CT detector is rotatably mounted to a side of the first CT detector and the flat panel detector assembly is rotatably mounted to a side of the first CT detector remote from the second CT detector.
8. The hybrid detector device of claim 1, wherein one of the second CT detector and the flat panel detector assembly is slidably mounted with respect to the first CT detector and the other is rotatably mounted with respect to the flat panel detector assembly.
9. A hybrid detector scanning method, characterized by being implemented by a hybrid detector arrangement according to any of claims 1 to 8, comprising: the X-ray tube emits X-rays; The CT detector assembly receives the attenuated X-rays and generates a first detection signal, and the flat panel detector assembly receives the attenuated X-rays and generates a second detection signal; And generating a CT image according to the first detection signal and the second detection signal.

Description

Hybrid detector device and scanning method Technical Field The application relates to the technical field of electronic computer tomography, in particular to a hybrid detector device and a scanning method. Background A computed tomography (computed tomography, CT) is a device that irradiates an object to be measured with X-rays in rotation, and then obtains a tomographic image (CT image) of the object by computer processing. However, the size of a single detection unit in the existing CT detector is mostly in the millimeter order, which greatly limits the spatial resolution of the CT system, so that in some examinations, such as a bone examination or an inner ear examination, the spatial resolution of the CT detector cannot meet the examination requirement. Disclosure of Invention The application provides a hybrid detector device and a scanning method, which are used for achieving higher spatial resolution and low-density resolution. The application provides a hybrid detector device comprising: At least one X-ray tube for emitting X-rays; The detector mechanism is opposite to the at least one X-ray tube in a one-to-one correspondence manner and is used for receiving the attenuated X-rays, and comprises a flat panel detector assembly and a CT detector assembly, wherein the flat panel detector assembly is fixedly mounted or movably mounted on the CT detector assembly. Based on the technical scheme, the flat panel detector component can have resolution in the micron order and anisotropy, and can provide higher spatial resolution. The CT detector assembly may have a low density resolution. Therefore, the mixed detector device provided by the application can have higher spatial resolution and low density resolution, can output CT images with higher quality, and is convenient for better finding focus in medical examination. In some possible embodiments, the CT detector assembly includes a first CT detector having an assembly bit disposed thereon, the flat panel detector assembly movably mounted with respect to the first CT detector, the flat panel detector assembly including a first state bit and a second state bit; when the flat panel detector assembly is in the first state position, the flat panel detector assembly is positioned in the assembly position, and the flat panel detector assembly and the first CT detector jointly receive attenuated X-rays; when the flat panel detector assembly is in the second state position, the flat panel detector assembly is positioned in dislocation with the assembly, and the first CT detector receives attenuated X-rays. In some possible embodiments, the flat panel detector assembly is slidably mounted to the first CT detector; The flat panel detector assembly moves back and forth between the first state position and the second state position as the flat panel detector assembly slides relative to the first CT detector. In some possible embodiments, one side of the flat panel detector assembly is rotatably connected to one side of the first CT detector; the flat panel detector assembly swings back and forth between the first state position and the second state position as the flat panel detector assembly rotates relative to the first CT detector. In some possible embodiments, the CT detector assembly includes a first CT detector having an assembly location configured thereon and a second CT detector and the flat panel detector assembly are each movably mounted relative to the first CT detector, the second CT detector and the flat panel detector assembly being alternately positionable in the assembly location. In some possible embodiments, the second CT detector and the flat panel detector assembly are both slidably mounted to the first CT detector. In some possible embodiments, the sliding direction of the second CT detector is parallel to the sliding direction of the flat panel detector assembly. In some possible embodiments, the second CT detector is rotatably mounted to a side of the first CT detector and the flat panel detector assembly is rotatably mounted to a side of the first CT detector remote from the second CT detector. In some possible embodiments, one of the second CT detector and the flat panel detector assembly is slidably mounted with respect to the first CT detector and the other is rotatably mounted with respect to the flat panel detector assembly; The hybrid detector device further comprises a driving mechanism which is respectively in transmission connection with the second CT detector and the flat panel detector component and is used for driving the first CT detector and the flat panel detector component to move to the assembly position in an alternating mode. In addition, the application also provides a hybrid detector scanning method, which is realized by the hybrid detector device provided in the above embodiments, and comprises the following steps: the X-ray tube emits X-rays; The CT detector assembly receives the attenuated X-rays and generates a first de