发明公开
- 专利标题: GEOMETRICAL TRANSFORMATIONS PRESERVING LIST-MODE FORMAT
- 专利标题(中): LIST MODE FORMAT为了延长几何变换
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申请号: EP09754234.4申请日: 2009-05-13
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公开(公告)号: EP2286274A2公开(公告)日: 2011-02-23
- 发明人: GAGNON, Daniel , OLIVIER, Patrick , KHURD, Parmeshwar, Kishore
- 申请人: Koninklijke Philips Electronics N.V.
- 申请人地址: Groenewoudseweg 1 5621 BA Eindhoven NL
- 专利权人: Koninklijke Philips Electronics N.V.
- 当前专利权人: Koninklijke Philips Electronics N.V.
- 当前专利权人地址: Groenewoudseweg 1 5621 BA Eindhoven NL
- 代理机构: Van Velzen, Maaike Mathilde
- 优先权: US56473 20080528
- 国际公布: WO2009144607 20091203
- 主分类号: G01T1/164
- IPC分类号: G01T1/164 ; G06T11/00
摘要:
A diagnostic imaging device includes detector elements (16) for detecting gamma-rays indicative of nuclear decay events. The detected gamma-rays are used to produce lines of response (LORs) (46), which are time stamped (20) and stored in list mode. The LORs are reconstructed (34) into an image. An image analysis processor (38) analyzes the image for motion artifacts and iteratively adjusts an event transform processor (30) to transform selected LORs to minimize the motion artifacts. If the transformed LOR (50) does not correspond with a pair of detector elements (16), closest detector elements (52, 54) are determined. Candidate LORs (62) are created between the closest and neighboring detector elements. An event location (40) on an LOR (46) is determined from the time-of-flight (TOF) information and then transformed (47) to generate a transformed event location (48). The candidate LOR (62) which most nearly intersects the transformed event location (40) and the appropriately updated TOF information is selected for use in image reconstruction.
公开/授权文献
- EP2286274B1 GEOMETRICAL TRANSFORMATIONS PRESERVING LIST-MODE FORMAT 公开/授权日:2019-07-24
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