发明名称 |
TOMOGRAPHY USING RADIATION |
摘要 |
In a computed tomography system using radiation, a large number of radiation beams are projected into a selected slice-like sectional portion of a subject to be reconstructed, in various directions. A profile of measured projection data is obtained from the radiation beams penetrated in parallel at each given angular interval. The profile of measured projection data thus obtained is subjected to a filtering operation to produce profiles of first modified projection data. The profile of modified projection data is recasted at properly selected intervals to produce second modified projection data. This results in a remarkable reduction of the amount of weight coefficients required in an interpolation to calculate the modified projection data for a large number of picture elements defined in matrix fashion on the sectional portion. |
申请公布号 |
GB2001502(B) |
申请公布日期 |
1982.01.27 |
申请号 |
GB19780026954 |
申请日期 |
1978.06.14 |
申请人 |
TOKYO SHIBAURA ELECTRIC CO LTD |
发明人 |
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分类号 |
G01N23/04;A61B6/03;G06Q50/22;G06Q50/24;G06T1/00;G06T11/00 |
主分类号 |
G01N23/04 |
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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