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CN-121978734-A - Detector module, method for producing the same, detector and medical imaging device

CN121978734ACN 121978734 ACN121978734 ACN 121978734ACN-121978734-A

Abstract

The invention discloses a detector module, a production method thereof, a detector and medical imaging equipment, and relates to the technical field of medical equipment, comprising a plurality of submodules, a detector module and a medical imaging equipment, wherein the submodules are structured as photon counting modules, the plurality of submodules are arranged on a first curve along a first direction, and the top surfaces of the submodules are tangent to the first curve; the conductive films are arranged on the top surfaces of the plurality of sub-modules and are distributed on the second curves, and the second curves and the first curves are configured into equidistant curves so that the distances between the conductive films and the top surfaces of each sub-module are equal. Therefore, the plurality of sub-modules can be arranged in an arc shape along the first direction, the conductive film is parallel to the top surfaces of the sub-modules, the conductive film is parallel to the pixelated anodes of the sub-modules, the distances between the conductive film and the top surfaces of each sub-module are equal, the distances between the conductive film and the pixelated anodes of each sub-module are equal, continuous, stable and uniform electric fields are formed, and imaging effects are improved.

Inventors

  • LI SHUANGXUE
  • ZHANG TONG

Assignees

  • 东软医疗系统股份有限公司

Dates

Publication Date
20260505
Application Date
20260115

Claims (13)

  1. 1. A detector module (100) for detecting radiation emitted by a radiation source attenuated by a scanned object, comprising: -a plurality of sub-modules (10), the sub-modules (10) being configured as photon counting modules, the plurality of sub-modules (10) being arranged on a first curve (30) along a first direction, and a top surface (101) of the sub-modules (10) being tangential to the first curve (30); The conductive films (20) are arranged on the top surfaces (101) of the sub-modules (10) and are arranged on the second curves (40), and the second curves (40) and the first curves (30) are configured to be equidistant curves, so that the distances between the conductive films (20) and the top surfaces (101) of the sub-modules (10) are equal.
  2. 2. The detector module (100) according to claim 1, characterized in that pairs of adjacent sub-modules (10) are partially offset along a second direction orthogonal to the first direction and are each offset along the same side of the sub-module (10) relative to the edge in the second direction.
  3. 3. The detector module (100) according to claim 2, characterized in that the closer to the center the sub-module (10) is to the edge the greater the misalignment distance of the sub-module (10) in the first direction is.
  4. 4. The detector module (100) according to claim 2, characterized in that of a pair of adjacent and partially offset sub-modules (10), the width dimension of the overlapping portion of the orthographic projections of the two sub-modules (10) in the first direction in the second direction is a, the width of the conductive film (20) is B, and the relation B < a is satisfied.
  5. 5. The detector module (100) of claim 2, wherein the conductive film (20) comprises a plurality of sub-films (201), the plurality of sub-films (201) being connected in sequence, at least one pair of adjacent sub-films (201) being partially staggered along a second direction orthogonal to the first direction.
  6. 6. The detector module (100) according to claim 1, characterized in that the top surface (101) of the sub-module (10) is tangential to the first curve (30) in the center of the top surface (101).
  7. 7. The detector module (100) according to claim 1, characterized in that the total coverage width of the detector module (100) in the first direction is 6cm or more.
  8. 8. The detector module (100) of claim 7, wherein a total coverage width of the detector module (100) in the first direction is 8cm or more.
  9. 9. A method of producing a detector module according to any one of claims 1-8, characterized in that the detector module is a detector module, the method comprising: Forming a conductive adhesive layer on the top surface of the sub-module; And the planar conductive films are attached to the top surfaces of the sub-modules through the press-connection surfaces of the press-connection tool, so that the conductive films which are arranged on the top surfaces of the plurality of sub-modules and are arranged on the second curves are formed.
  10. 10. The method of producing a detector module according to claim 9, wherein during mounting the conductive film on the top surface of the sub-module, a reverse pulling force is applied to both ends of the conductive film to put the conductive film in a state of having tension.
  11. 11. The method of claim 10, wherein the reverse tension has a tension value of F and satisfies the relationship of 0.1 N≤F≤2N.
  12. 12. Detector (200) characterized by comprising a plurality of detector modules (100) according to any of claims 1-7, or comprising a plurality of said detector modules (100) prepared according to the production method of any of claims 9-11, a plurality of said detector modules (100) being arranged on a third curve along a second direction orthogonal to said first direction, said first curve (30), said third curve being configured as a curve of the same sphere.
  13. 13. A medical imaging device, characterized by comprising a gantry, a radiation source and a detector (200) according to claim 12; The radiation source and the detector (200) are respectively arranged on the scanning frame, the radiation source is configured to emit rays to the scanning object, and the detector (200) is configured to receive the rays attenuated by the scanning object and convert the rays into electric signals.

Description

Detector module, method for producing the same, detector and medical imaging device Technical Field The present invention relates to the technical field of medical devices, and in particular, to a detector module, a method for producing the same, a detector, and a medical imaging device. Background With the continued development of medical levels, more and more medical devices are being used to aid in medical diagnosis or treatment. For example CT (Computed Tomography) devices are used to detect human diseases. The CT apparatus detects X-rays passing through a human body by a CT detector and converts a received optical signal into an electrical signal. The CT apparatus includes a conventional energy integration CT and a Photon Counting CT (PCCT), which is a revolutionary technology in the CT field, and the Photon Counting CT can record the number, energy and arrival time of X-ray photons one by one, directly generate a multi-energy spectrum image, and implement a principle upgrade from integration to Counting, so as to implement higher spatial resolution, lower radiation dose and accurate energy spectrum imaging, where a plurality of sub-modules mounted on the Photon Counting CT detector are important components for implementing photoelectric conversion in the Photon Counting CT detector, and currently in the Photon Counting CT, it is difficult to form a stable electric field between a high-voltage film and an anode of the sub-module, which affects an imaging effect, and there is room for improvement. Disclosure of Invention The present invention aims to solve at least one of the technical problems existing in the prior art. It is therefore an object of the present invention to provide a detector module which facilitates the formation of a continuous, stable and uniform electric field, improving the imaging effect. The invention further proposes a method of producing a detector module. The invention further proposes a detector. The invention further proposes a medical imaging device. A detector module according to the invention for detecting radiation emitted by a radiation source attenuated by a scanned object, the detector module comprising: a plurality of sub-modules configured as photon counting modules, the plurality of sub-modules being arranged on a first curve along a first direction, and a top surface of the sub-modules being tangential to the first curve; The conducting films are arranged on the top surfaces of the plurality of sub-modules and are arranged on a second curve, and the second curve and the first curve are configured into equidistant curves, so that the distances between the conducting films and the top surfaces of the sub-modules are equal. According to the detector module provided by the invention, the plurality of sub-modules can be arranged in an arc shape along the first direction, and the conductive film is parallel to the top surface of the sub-module, so that the conductive film is parallel to the pixelated anode of the sub-module, the distances between the conductive film and the top surface of each sub-module are equal, the distances between the conductive film and the pixelated anode of each sub-module are equal, the formation of a continuous, stable and uniform electric field is facilitated, and the imaging effect is improved. In some examples of the invention, pairs of adjacent sub-modules are partially offset along a second direction orthogonal to the first direction and are each offset along the same side of the sub-module relative to the edge in the second direction. In some examples of the invention, the closer the sub-module is to the center in the first direction, the greater the misalignment distance of the sub-module from the edge. In some examples of the present invention, in a pair of adjacent and partially offset sub-modules, a width dimension of a superposition portion of orthographic projections of two sub-modules along the first direction is a, a width of the conductive film is B, and a relation B < a is satisfied. In some examples of the present invention, the conductive film includes a plurality of sub-films, the plurality of sub-films being sequentially connected, at least one pair of adjacent sub-films being partially arranged offset along a second direction orthogonal to the first direction. In some examples of the invention, the top surface of the sub-module is tangential to the first curve at a center of the top surface. In some examples of the invention, the detector module has a total coverage width in the first direction of 6cm or more. In some examples of the invention, the detector module has a total coverage width in the first direction of 8cm or more. According to the production method of the detector module, the detector module is the detector module, and the production method comprises the following steps: Forming a conductive adhesive layer on the top surface of the sub-module; And the planar conductive films are attached to the top surfaces