发明名称 |
X-ray examination apparatus with a brightness control system |
摘要 |
An X-ray examination apparatus includes an X-ray source with a brightness control signal input, an X-ray image device for providing an X-ray image of an object to be imaged, X-ray absorption means between the X-ray source and the X-ray image device, a brightness control system coupled to the X-ray image device and the brightness control signal input in order to derive a brightness control signal from the X-ray image, and a detection means which is coupled between the X-ray image device and the brightness control signal input in order to exclude a degree of detected absorption from said brightness control signal caused by the absorption means present in the X-ray image. Direct radiation and absorption means (such as filters) in the detected absorption range in a histogram of pixels of the X-ray image are automatically excluded from the brightness control which is thus improved.
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申请公布号 |
US6333965(B1) |
申请公布日期 |
2001.12.25 |
申请号 |
US20000539910 |
申请日期 |
2000.03.30 |
申请人 |
U. S. PHILIPS CORPORATION |
发明人 |
VAN BERKEL ARNOLDUS P. L. |
分类号 |
G21K3/00;A61B6/00;G01T1/00;G21K5/00;G21K5/02;H05G1/36;H05G1/64;(IPC1-7):H05G1/64 |
主分类号 |
G21K3/00 |
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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