CN-121987234-A - Planar X-ray imaging detection method and system

Abstract

The embodiment of the application discloses a planar X-ray imaging detection method and a planar X-ray imaging detection system. The method comprises the steps of irradiating a plurality of areas of a human body by using planar X rays, acquiring energy projection data of a plurality of energy windows of the plurality of areas of the human body by using a photon counting detector, acquiring image information corresponding to the areas of the human body according to the energy projection data of the plurality of energy windows, and splicing the plurality of image information to obtain a detection image. The planar X-ray imaging detection method and the planar X-ray imaging detection system disclosed by the embodiment of the application can conveniently and accurately acquire abundant detection information under the combined action of the planar X-rays and the photon counting detector.

Inventors

• MOU XIAOYONG
• GAO JUN

Assignees

• 芯眼科技(北京)有限公司

Dates

Publication Date

20260508

Application Date

20260310

Claims (18)

1. 1. A planar X-ray imaging detection method comprising: Illuminating a plurality of regions of the human body with planar X-rays; acquiring energy projection data of a plurality of energy windows of a plurality of areas of the human body by using a photon counting detector; Obtaining image information of a corresponding human body area according to the energy projection data of the energy windows; and splicing the plurality of image information to obtain a detection image.
2. 2. The planar X-ray imaging detection method according to claim 1, wherein the image information of the human body region obtained from the energy projection data of the plurality of energy windows includes material composition information; obtaining a material composition distribution diagram according to the material composition information corresponding to the multiple areas of the human body, Wherein the material composition information includes at least one selected from bone tissue information, muscle tissue information, and adipose tissue information.
3. 3. The planar X-ray imaging detection method according to claim 2, wherein the planar X-ray imaging detection method further comprises: obtaining detection information according to the image information of the human body area, Wherein the detection information comprises at least one selected from the group consisting of total bone mineral content, local bone mineral content, bone quality index, muscle distribution and fat distribution.
4. 4. The planar X-ray imaging detection method according to claim 1, wherein the illuminating a plurality of areas of a human body with planar X-rays comprises: and sequentially irradiating a plurality of areas of the human body by adopting a wire harness scanning mode and/or a fan beam scanning mode.
5. 5. The planar X-ray imaging detection method according to claim 4, wherein the planar X-ray imaging detection method further comprises: Irradiating a first region of the human body with the planar X-rays for a first period of time; the photon counting detector acquires energy projection data of a plurality of energy windows of the first area; irradiating a second region of the human body with the planar X-rays for a second period of time; the photon counting detector acquires energy projection data of a plurality of energy windows of the second area; Obtaining image information corresponding to the first region according to the energy projection data of the energy windows of the first region; Obtaining image information corresponding to the second region according to the energy projection data of the plurality of energy windows of the second region; and after the image information corresponding to the first area and the image information corresponding to the second area are spliced to obtain the detection image, carrying out pixel level quantization on the detection image.
6. 6. The planar X-ray imaging detection method according to claim 5, wherein the planar X-ray imaging detection method further comprises: and obtaining image information of the corresponding human body area according to the energy projection data of the energy windows, the scanning areas and the scanning time corresponding to the energy projection data of the energy windows.
7. 7. The planar X-ray imaging detection method according to claim 1, wherein the planar X-ray imaging detection method further comprises: and calculating the energy projection data of the energy windows according to the beer-lambert law and the energy window weight factors to obtain a material composition distribution diagram corresponding to the human body region.
8. 8. The planar X-ray imaging detection method of claim 7 wherein the energy window weight factor ω i is weighted according to the integral difference; ω i =α +(1-α) ; wherein, mu 1 is the linear attenuation coefficient of the interested substance under the energy E, mu 2 is the linear attenuation coefficient of the background substance under the energy E, and alpha is the adjusting parameter.
9. 9. The planar X-ray imaging detection method of claim 7 wherein the energy window weight factor ω i is weighted according to a contrast weighting of average transmittance; ω i = ; wherein T1i is an average value obtained by integrating and normalizing the product of T1 (E) and the energy spectrum phi (E) in the energy window range, and T2i is an average value obtained by integrating and normalizing the product of T2 (E) and the energy spectrum phi (E) in the energy window range.
10. 10. The planar X-ray imaging detection method of claim 1 wherein the acquiring energy projection data for a plurality of energy windows for a plurality of regions of the human body using photon counting detectors comprises: Receiving X-ray photons that pass through a human body; measuring the energy of the X-ray photons; dividing the X-ray photons into corresponding energy intervals according to the measured energy and the set energy intervals and counting; and obtaining the energy projection data of the energy windows according to the counting data of each energy interval.
11. 11. The planar X-ray imaging detection method according to claim 10, wherein corresponding scan areas are recorded simultaneously when the energy projection data of the plurality of energy windows are obtained.
12. 12. The planar X-ray imaging detection method according to claim 1, wherein material composition information of a human body region is obtained from energy projection data of a plurality of energy windows and a material composition model; Wherein the material composition model comprises an artificial intelligence algorithm.
13. 13. A planar X-ray imaging detection system comprising: An X-ray source for providing planar X-rays to irradiate a plurality of regions of a human body; the photon counting detector is arranged opposite to the X-ray source and is used for acquiring energy projection data of a plurality of energy windows of a plurality of areas of the human body; and the data processing unit is connected with the photon counting detector to acquire the energy projection data of the energy windows and obtain a detection image according to the energy projection data of the energy windows.
14. 14. The planar X-ray imaging detection system of claim 13 wherein said data processing unit obtains material composition information for a region of the human body from energy projection data for said plurality of energy windows and obtains a material composition profile from material composition information corresponding to a plurality of regions of the human body, Wherein the material composition information includes at least one selected from bone tissue information, muscle tissue information, and adipose tissue information.
15. 15. The planar X-ray imaging detection system of claim 14 wherein said data processing unit obtains detection information from image information of said human body region, Wherein the detection information comprises at least one selected from the group consisting of total bone mineral content, local bone mineral content, bone quality index, muscle distribution and fat distribution.
16. 16. The planar X-ray imaging detection system according to claim 13, wherein the X-ray source sequentially irradiates a plurality of regions of the human body using a beam scanning method and/or a fan beam scanning method.
17. 17. The planar X-ray imaging detection system of claim 16 wherein the planar X-ray imaging detection system further comprises: A frame; A platform arranged on the frame for bearing the subject, one side of the platform is provided with the X-ray source, the other side of the platform is provided with the photon counting detector, Wherein the gantry is coupled to the X-ray source and the photon counting detector, respectively, to drive the X-ray source and the photon counting detector to move.
18. 18. The planar X-ray imaging detection system of claim 13 wherein the photon counting detector comprises a one-and/or two-dimensional array of photon counters.

Description

Planar X-ray imaging detection method and system Technical Field The application relates to the technical field of medical treatment, in particular to a planar X-ray imaging detection method and a planar X-ray imaging detection system. Background Since the discovery, X-rays have become one of the basic stone technologies of modern medicine, and are widely used in the medical field. The X-ray can generate images by utilizing the absorption difference of different tissues to the rays, so that the morphology and pathological changes of structures such as bones, lungs and the like can be visually presented. In the prior art, digital imaging (Digital Radiography, DR) has gradually replaced traditional film due to its significantly improved image quality, but existing whole body DR or scanning imaging systems typically employ integrating flat panel detectors or linear array detectors, and the following disadvantages still remain: 1) Only gray projection images can be obtained, and energy spectrum information is lacked; 2) Material decomposition and quantitative analysis are difficult to perform; 3) And is widely used for morphological diagnosis, and is difficult to expand to quantitative evaluation of whole body health. It is therefore desirable to have a new planar X-ray imaging detection method and system that overcomes at least one of the above-mentioned problems. Disclosure of Invention In view of the above problems, the present application aims to provide a method and a system for planar X-ray imaging detection, which aim to obtain abundant detection information conveniently and accurately. According to a first aspect of an embodiment of the present application, there is provided a planar X-ray imaging detection method, including: Illuminating a plurality of regions of the human body with planar X-rays; acquiring energy projection data of a plurality of energy windows of a plurality of areas of the human body by using a photon counting detector; Obtaining image information of a corresponding human body area according to the energy projection data of the energy windows; and splicing the plurality of image information to obtain a detection image. Optionally, the image information of the human body region obtained from the energy projection data of the plurality of energy windows includes material composition information; obtaining a material composition distribution diagram according to the material composition information corresponding to the multiple areas of the human body, Wherein the material composition information includes at least one selected from bone tissue information, muscle tissue information, and adipose tissue information. Optionally, the planar X-ray imaging detection method further includes: obtaining detection information according to the image information of the human body area, Wherein the detection information comprises at least one selected from the group consisting of total bone mineral content, local bone mineral content, bone quality index, muscle distribution and fat distribution. Optionally, the illuminating the plurality of regions of the human body with the planar X-rays includes: and sequentially irradiating a plurality of areas of the human body by adopting a wire harness scanning mode and/or a fan beam scanning mode. Optionally, the planar X-ray imaging detection method further includes: Irradiating a first region of the human body with the planar X-rays for a first period of time; the photon counting detector acquires energy projection data of a plurality of energy windows of the first area; irradiating a second region of the human body with the planar X-rays for a second period of time; the photon counting detector acquires energy projection data of a plurality of energy windows of the second area; Obtaining image information corresponding to the first region according to the energy projection data of the energy windows of the first region; Obtaining image information corresponding to the second region according to the energy projection data of the plurality of energy windows of the second region; and after the image information corresponding to the first area and the image information corresponding to the second area are spliced to obtain the detection image, carrying out pixel level quantization on the detection image. Optionally, the planar X-ray imaging detection method further includes: and obtaining image information of the corresponding human body area according to the energy projection data of the energy windows, the scanning areas and the scanning time corresponding to the energy projection data of the energy windows. Optionally, the planar X-ray imaging detection method further includes: and calculating the energy projection data of the energy windows according to the beer-lambert law and the energy window weight factors to obtain a material composition distribution diagram corresponding to the human body region. Optionally, the energy window weight factor ω i is we