发明名称 |
Method of reconstructing tomographic images |
摘要 |
A method of reconstructing a tomographic image of an object from incomplete projection data using a limited angle tomography technique. The method includes using the protection data to obtain a first reconstruction of the image. Thereafter, regions in the first reconstruction that can be predicted with an acceptable degree of certainty in a final reconstruction, are identified. Prior knowledge in the form of possible density levels and piece-wise smoothness that regions in an image can assume, are applied to those regions of acceptable certainty in the first reconstruction so as to obtain a second reconstruction. The projection data is then applied to projections of the second reconstruction using a constraining method to obtain a third reconstruction. In the same way regions of acceptable certainty are identified and the prior knowledge and the projection data are applied to the third reconstruction and subsequent reconstructions until a final reconstruction is achieved.
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申请公布号 |
US6788758(B2) |
申请公布日期 |
2004.09.07 |
申请号 |
US20030466496 |
申请日期 |
2003.07.16 |
申请人 |
AFRICAN MEDICAL IMAGING (PROPRIETARY) LIMITED |
发明人 |
DE VILLIERS MATTIEU STEFAN |
分类号 |
G06T11/00;(IPC1-7):A61B6/03 |
主分类号 |
G06T11/00 |
代理机构 |
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