Invention Grant
US09279887B2 Self-similar, transversely shift-invariant point response function in single photon emission computed tomography
有权
单光子发射计算机断层扫描中的自相似横向移位不变点响应函数
- Patent Title: Self-similar, transversely shift-invariant point response function in single photon emission computed tomography
- Patent Title (中): 单光子发射计算机断层扫描中的自相似横向移位不变点响应函数
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Application No.: US14588995Application Date: 2015-01-05
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Publication No.: US09279887B2Publication Date: 2016-03-08
- Inventor: Amos Yahil
- Applicant: Siemens Medical Solutions USA, Inc.
- Applicant Address: US PA Malvern
- Assignee: Siemens Medical Solutions USA, Inc.
- Current Assignee: Siemens Medical Solutions USA, Inc.
- Current Assignee Address: US PA Malvern
- Agent Peter Kendall
- Main IPC: G01T1/10
- IPC: G01T1/10 ; G01T1/164 ; G06T11/00
Abstract:
A point response function (PRF) is estimated in SPECT. A 3D PRF is based on measured emissions from a point source at different distances from the detector. Rather than sampling every location in space, the 2D PRFs at a sub-set of distances are sampled. The 3D PRF is then modeled with a representative 2D PRF and a scale as a function of distance. For a given distance from the detector, the 2D PRF to be applied is formed by scaling the representative 2D PRF using the scale for that distance.
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