Medical imaging equipment, collimator and processing method thereof
By staggering the collimation holes and designing the seam within the collimation holes during splicing, the problem of uneven splicing of SPECT collimators was solved, thus improving the uniformity of the collimator and the image quality.
CN121987232APending Publication Date: 2026-05-08SHANGHAI UNITED IMAGING HEALTHCARE
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Patent Information
- Application Number
- CN202411551397.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-01
- Publication Date
- 2026-05-08
AI Technical Summary
Technical Problem
When existing SPECT collimators are spliced in blocks, uneven seams lead to a decrease in collimator uniformity and image quality.
Method used
A collimator with staggered collimating holes is used. The collimator is processed by selective laser sintering. During splicing, the seam is designed inside the collimating hole so that the equivalent aperture remains unchanged, ensuring consistent gamma photon counting.
Benefits of technology
It improves the uniformity of the collimator and image quality, ensures that the number of gamma photons entering the collimation aperture is consistent, and avoids sensitivity reduction caused by seam occlusion.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention relates to medical imaging equipment, a collimator and a processing method of the collimator. As the two adjacent rows of collimation holes of the collimation body are arranged in a staggered manner, if a cross splicing method in the prior art is adopted, splicing seams are formed in the collimation holes, so that parts of the collimation holes are shielded by the splicing seams, or the splicing seams are formed between the two collimation holes, so that the thickness of a partition plate between the two collimation holes is increased; therefore, part of gamma photons capable of entering the collimation hole are blocked, the sensitivity of the part is reduced, and the uniformity of the collimator is influenced. According to the invention, the splicing edge of the collimator is designed, so that in the collimator formed by splicing, the splicing seam is located in the collimation hole, although the splicing seam is formed in the collimation hole, the equivalent aperture of the collimation hole at the splicing seam is not changed, namely the effective aperture is not changed, so that the counting of gamma photons entering the collimation holes is consistent, and the accuracy of the gamma photons entering the collimation holes is improved. Therefore, the uniformity of the collimator can be ensured, and the image quality is further ensured.
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