发明授权
US5822393A Method for adaptively modulating the power level of an x-ray tube of a
computer tomography (CT) system
失效
用于自适应地调制计算机断层摄影（CT）系统的X射线管的功率水平的方法
- 专利标题： Method for adaptively modulating the power level of an x-ray tube of a computer tomography (CT) system
- 专利标题（中）： 用于自适应地调制计算机断层摄影（CT）系统的X射线管的功率水平的方法
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申请号： US831411申请日： 1997-04-01
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公开(公告)号： US5822393A公开(公告)日： 1998-10-13
- 发明人: Stefan Popescu
- 申请人： Stefan Popescu
- 申请人地址： DEX Munich
- 专利权人： Siemens Aktiengesellschaft
- 当前专利权人： Siemens Aktiengesellschaft
- 当前专利权人地址： DEX Munich
- 主分类号： A61B6/03
- IPC分类号： A61B6/03 ; H05G1/20
摘要：
In a method for adaptively modulating the power level of an x-ray tube of a computer tomography (CT) system for reducing an x-ray dose of an x-ray beam radiating through a patient and reaching detector means of said CT system during the acquisition of projections of body slices of the patient, the value of the maximum attenuation level per projection is established out of the patient projection data acquired for the respective projection and stored in a memory. The value of the maximum attenuation level for the next projection is predicted based on at least one of the stored values of the maximum attenuation levels and the respective power level of the x-ray tube for the next projection is established. Finally the respective power level of the x-ray tube for the next projection is accordingly adjusted.