发明名称 |
X-ray examination apparatus and filter suitable for use therein. |
摘要 |
<p>By using an X-ray filter filled with a liquid, having a flexible wall between the X-ray source and the detector in an X-ray examination apparatus, spatial brightness variations in an X-ray image caused by vignetting, can be obviated. The filter thickness is adjustable by the supply and the discharge of a liquid, the filter preserving a quadratic thickness variation from the centre to the edges. <IMAGE></p> |
申请公布号 |
EP0453027(A1) |
申请公布日期 |
1991.10.23 |
申请号 |
EP19910200857 |
申请日期 |
1991.04.12 |
申请人 |
N.V. PHILIPS' GLOEILAMPENFABRIEKEN |
发明人 |
MULDER, JAKOB WIJNAND;SIBBENS, GOEDELE ALEX MARIA |
分类号 |
A61B6/00;A61B6/03;G21K1/10;G21K3/00;H05G1/00 |
主分类号 |
A61B6/00 |
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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