发明名称 |
High order primary decay correction for CT imaging system detectors |
摘要 |
Degradation in reconstructed medical images is reduced by a method for calibrating a primary decay correction for a radiation detector having a decay curve that can be characterized by a plurality of components having different time constants. The method includes steps of: fitting the decay curve to a sum of a plurality of weighted exponentials having a first set of time constants; applying a correction to a measured response of the detector using a sum of the plurality of weighted exponentials having the first set of time constants to obtain a corrected response; selecting at least one additional exponential time constant dependent upon the corrected response; and fitting the decay curve to a sum of a second plurality of weighted exponentials including the first plurality of time constants and the at least one additional exponential time constant.
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申请公布号 |
US6493646(B1) |
申请公布日期 |
2002.12.10 |
申请号 |
US20000505590 |
申请日期 |
2000.02.16 |
申请人 |
GE MEDICAL SYSTEMS GLOBAL TECHNOLOGY COMPANY, LLC |
发明人 |
HSIEH JIANG;GURMEN O. ERDOGAN |
分类号 |
G01T1/20;A61B6/00;A61B6/03;G01N23/04;G01T1/17;G01T1/202;G06T1/00;(IPC1-7):G06F19/00 |
主分类号 |
G01T1/20 |
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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