公开(公告)号：EP0279476A1

公开(公告)日：1988-08-24

申请号：EP88200124.1

申请日：1988-01-26

申请人： Pillay, Morrimuthoo ,  Menon, Rajgobal Sredharan

发明人： Pillay, Morrimuthoo ,  Menon, Rajgobal Sredharan

IPC分类号： G21K1/10 ,  G01T1/164 ,  G21K3/00

CPC分类号： G21K1/10 ,  G01T1/1648

摘要： An alloy filter (16) in the form of a plate made from a homogeneous alloy comprising 85-95 wt.% cadmium and 5-15 wt.% copper is interposed between a collimator (12) and sodium iodide crystal (18) of a gamma camera. The alloy filter improves image resolution by allowing the passage only of emissions (A,C) which impinge substantially perpendicularly on the collimator, while filtering out others (B,D) which impinge obliquely.

摘要翻译： 由包含85-95重量％镉和5-15重量％铜的均匀合金制成的板形合金过滤器（16）置于准直仪（12）和碘化钠晶体（18）之间， 伽马相机。 合金过滤器通过仅使基本上垂直于准直器照射的排放物（A，C）通过，同时过滤掉倾斜撞击的其他物体（B，D）来提高图像分辨率。