发明授权
- 专利标题： Radiation emitting device with moveable aperture plate
- 专利标题（中）： 具有可移动光圈板的辐射发射装置
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申请号： US723000申请日： 1991-06-28
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公开(公告)号： US5148032A公开(公告)日： 1992-09-15
- 发明人: Fancisco Hernandez
- 申请人： Fancisco Hernandez
- 申请人地址： CA Concord
- 专利权人： Siemens Medical Laboratories, Inc.
- 当前专利权人： Siemens Medical Laboratories, Inc.
- 当前专利权人地址： CA Concord
- 主分类号： A61N5/10
- IPC分类号： A61N5/10 ; G21K1/04 ; H05G1/36
摘要：
In a radiation emitting device, particularly in a radiation therapy device, isodose curves are adjusted both by a moveable plate that is controlled during irradiation and by varying the dose rate of the radiation beam during irradiation. By superimposing the effects of moving the plate and varying the dose rate of the radiation beam, it is possible to vary the isodose curve in the object of irradiation, so that a wide range of variation in the possible isodose curves is obtained. If the plate is moved at a constant speed, e.g. various wedge-shaped isodose curves can be easily achieved.
公开/授权文献
- US5977004A Powder of titanium compounds 公开/授权日：1999-11-02
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