发明名称 |
X-ray examination apparatus comprising a filter |
摘要 |
An X-ray examination apparatus (1), including an X-ray source (2) and an X-ray detector (5), is provided with an X-ray filter (6) which is arranged between the X-ray source and the X-ray detector. The X-ray filter (6) includes a plurality of filter elements (7) whose X-ray absorptivity can be adjusted by adjustment of a quantity of X-ray absorbing liquid (14) within the individual filter elements; a first end of individual filter elements communicates with the X-ray absorbing liquid whereas a second end communicates with an X-ray transparent liquid (12). The X-ray filter is preferably provided with a pressure control system for independent control of the liquid pressure in individual row ducts (11) and individual column ducts (13). Individual filter elements are preferably provided with a piston for separating the X-ray absorbing liquid from the X-ray transparent liquid.
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申请公布号 |
US6188749(B1) |
申请公布日期 |
2001.02.13 |
申请号 |
US19990236239 |
申请日期 |
1999.01.22 |
申请人 |
U.S. PHILIPS CORPORATION |
发明人 |
SCHILLER CHRISTOPH;DE SAMBER MARK A.;FOKKINK LAMBERTUS G. J. |
分类号 |
G21K3/00;G21K1/10;(IPC1-7):G21K3/00 |
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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