发明名称 |
Method for correcting truncation artifacts |
摘要 |
The invention relates to a method for correcting truncation artifacts in a reconstruction method for computed tomography recordings. The projection images are recorded by an x-ray image detector being extended by determining the attenuation of the radiation outside the projection image for pixels. Non-horizontal filter lines are extended by transaxial and axial artificial extension of the x-ray image detector for the purposes of truncation correction. The truncation correction for non-horizontal filter lines being carried out according to a method from at least one of the following groups: truncation correction takes place regardless of the specific location and orientation of the filter lines; truncation correction takes place as a function of the specific position and orientation of the filter lines, with the filter lines themselves being retained; and truncation correction takes place by introducing new modified filter lines, with filtering taking place along offset artificially extended filter lines.
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申请公布号 |
US8107708(B2) |
申请公布日期 |
2012.01.31 |
申请号 |
US20080217650 |
申请日期 |
2008.07.08 |
申请人 |
HOPPE STEFAN;HORNEGGER JOACHIM;LAURITSCH GUENTER;SIEMENS AKTIENGESELLSCHAFT |
发明人 |
HOPPE STEFAN;HORNEGGER JOACHIM;LAURITSCH GUENTER |
分类号 |
G06K9/00 |
主分类号 |
G06K9/00 |
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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