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Incorporation of axial system response in iterative reconstruction from axially compressed data of cylindrical scanner using on-the-fly computing
Incorporation of axial system response in iterative reconstruction from axially compressed data of cylindrical scanner using on-the-fly computing
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机译:使用即时计算从圆柱扫描仪的轴向压缩数据迭代重建中合并轴向系统响应
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摘要
A method and system for reconstructing PET image data from a cylindrical PET scanner by incorporation of axial system response. The method includes the steps of: assuming the decomposition of axial components into individual line-of-response (LOR) contributions, approximating each LOR spreading in image space as depth-independent, implementing each LOR response, combining the LORs to produce large span projection data, implementing the back projector as a transposed matrix, and assembling the LOR projections and spans for each azimuthal angle.
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