发明名称 |
X-RAY TOMOGRAPH |
摘要 |
An X-ray tomograph which extracts data corresponding to the transmission data of parallel beam X-rays from X-ray transmission data collected on the basis of fan beam X-rays and reconstructs an image on the basis of the extracted data, wherein shower-like artifact occurring in the reconstructed image due to the influence of an instantaneous change in the X-ray intensity is eliminated, characterized by storing a plurality of views of output data from a data collection unit in a buffer memory, calculating the weighted average on the data of a plurality of views stored in the buffer memory to obtain view data free from the influences of the X-ray intensity change, and replacing the view data affected by the X-ray intensity change by this view data. |
申请公布号 |
EP0395762(A4) |
申请公布日期 |
1991.04.10 |
申请号 |
EP19880909367 |
申请日期 |
1988.10.31 |
申请人 |
YOKOGAWA MEDICAL SYSTEMS, LTD |
发明人 |
MATSUMURA, SHIGERU YOKOGAWA MEDICAL SYSTEMS, LTD. |
分类号 |
A61B6/03;A61B6/10;G01N23/04;G06T11/00;H05G1/46;H05G1/60;(IPC1-7):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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