发明名称 |
Improved slit radiography. |
摘要 |
<p>in radiography apparatus a moving slit collimator is disposed between an X-ray source and a patient undergoing examination. Radiation is detected with an X-ray image intensifier and television pickup chain. The field of view of the television pickup is limited to that area of the output screen of the X-ray image intensifier which corresponds to the image produced by direct radiation which passes through the moving slit. The view of the television pickup may be limited by a second slit, disposed between the X-ray image intensifier and television pickup which moves in synchronism with the first slit. Alternately, the view of a television pickup may be limited by synchronizing scan signals for the pickup of the with the motion of the slit collimator.</p> |
申请公布号 |
EP0083465(A1) |
申请公布日期 |
1983.07.13 |
申请号 |
EP19820201672 |
申请日期 |
1982.12.29 |
申请人 |
NORTH AMERICAN PHILIPS CORPORATION |
发明人 |
BONAR, DAVID CHARLES |
分类号 |
G01N23/04;A61B6/00;G21K1/02;H04N7/18;H05G1/64;(IPC1-7):05G1/64;21K1/02;04N5/32 |
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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