发明名称 |
Component method and system for PET detector efficiency normalization |
摘要 |
A method and apparatus for calibrating a PET scanner is provided. First phantom sinogram data is acquired from a scan of a solid cylinder phantom within a PET scanner imaging FOV; second phantom sinogram data is acquired from a scan of a second solid plane or scanning line phantom within the PET scanner imaging FOV; and a PET scanner detector component scanner efficiency normalization is determined from at least one of the first and second sinogram data. In one aspect a crystal determining efficiency factor is determined as a function of phantom sinogram data without a solid angle correction, and a detector geometry factor is determined as a function of the crystal efficiency factor and phantom sinogram data. In one aspect a smoothed crystal efficiency normalization factor is determined from a noisy crystal efficiency factor through an iterative smoothing technique.
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申请公布号 |
US7718954(B2) |
申请公布日期 |
2010.05.18 |
申请号 |
US20070627104 |
申请日期 |
2007.01.25 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
WANG WENLI;LAURENCE THOMAS;HU ZHIQIANG |
分类号 |
G01T1/16 |
主分类号 |
G01T1/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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