发明名称 |
Fast cone beam image reconstruction using a detector weight list |
摘要 |
A method and apparatus are provided for three dimensional computerized tomographic imaging of an object, wherein cone beam energy from a cone beam source is applied to at least a portion of an object to be imaged by causing relative rotational motion between the source and the object at a plurality of source positions along a path scanning trajectory. An area detector receives cone beam energy from the source on a plurality of detector elements arranged in an array of rows and columns, so that its detector elements develop a set of measurement signals at each of the plurality of source positions. Derivative Radon transform data is directly developing by multiplication of the measurement signals of each set by pre-calculated and stored weight factors. Thereafter, an image of the object is reconstructed using the directly developed Radon derivative data.
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申请公布号 |
US5960055(A) |
申请公布日期 |
1999.09.28 |
申请号 |
US19970994605 |
申请日期 |
1997.12.19 |
申请人 |
SIEMENS CORPORATE RESEARCH, INC. |
发明人 |
SAMARASEKERA, SUPUN;SAUER, FRANK;TAM, KWOK |
分类号 |
A61B6/03;G01N23/04;G06T11/00;(IPC1-7):A61B6/03 |
主分类号 |
A61B6/03 |
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地址 |
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