发明名称 |
Automatic adaptive soft tissue thresholding for two-pass CT cone-beam artifact reduction |
摘要 |
Since the soft tissue levels in an image usually comprise a variety of values between air and bone boundaries, it may not be obvious a priori what threshold value applies. According to an exemplary embodiment of the present invention, an examination apparatus is provided which is adapted for determining the optimal weight for subtraction of a soft tissue correction image without performing a multitude of forward and backward projections. This may be provided determining a roughness function based on a plurality of subtractions of the soft tissue streak image, each subtraction corresponding to a different weighting of the streak image.
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申请公布号 |
US8135197(B2) |
申请公布日期 |
2012.03.13 |
申请号 |
US20060090654 |
申请日期 |
2006.10.06 |
申请人 |
FORTHMANN PETER;GRASS MICHAEL;PROKSA ROLAND;KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
FORTHMANN PETER;GRASS MICHAEL;PROKSA ROLAND |
分类号 |
A61B6/03 |
主分类号 |
A61B6/03 |
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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