发明名称 |
METHOD OF USING A PRIORI INFORMATION IN COMPUTERIZED TOMOGRAPHY |
摘要 |
To improve computerized tomography (CT) imaging quality, a priori information of the test object is developed by probing the surfaces thereof at a multiplicity of points sufficient to spatially locate and define the envelope of the test object cross section to be imaged. A CT scan of the test object is then performed, and the CT image reconstructed therefrom is corrected with this a priori information. To expedite a priori information development, the convex hull of the test object is constructed from X-ray projection data and fitted with the probe developed measurement data to define the cross section envelope. |
申请公布号 |
GB2222356(A) |
申请公布日期 |
1990.02.28 |
申请号 |
GB19890017363 |
申请日期 |
1989.07.28 |
申请人 |
* GENERAL ELECTRIC COMPANY |
发明人 |
FRANCIS HOWARD * LITTLE;DAVID LACEY * HAMPSON |
分类号 |
A61B6/03;G01N23/04;G06T11/00 |
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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