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1. 发明申请

US20060146984A1 Method for determining at least one scaling factor for measured values of a computed tomography unit 审中-公开
标题翻译：用于确定计算机断层摄影单元的测量值的至少一个缩放因子的方法
公开(公告)号：US20060146984A1
公开(公告)日：2006-07-06
申请号：US11313732
申请日：2005-12-22
申请人： Herbert Bruder , Johannes Ebersberser , Rainer Raupach
发明人： Herbert Bruder , Johannes Ebersberser , Rainer Raupach
IPC分类号： A61B6/00 , G01N23/00 , G21K1/12 , H05G1/60
CPC分类号： A61B6/032 , A61B6/4014 , A61B6/583
摘要： A method is disclosed for determining at least one scaling factor for measured values obtained with the aid of a computed tomography unit. The computed tomography unit includes at least two recording systems that can rotate about a common rotation axis. Each of the systems includes an X-ray source and a detector having detector elements for detecting X-radiation emanating from the X-ray source. To reduce artifacts when use is made of measured values of the two recording systems in the reconstruction of an image, a scaling factor is determined for the measured values of the first or of the second recording system on the basis of measured values that originate from projections recorded from an object with the aid of the two recording systems. Each of the two recording systems is used to record at least one projection at at least substantially the same projection angle, whose measured values are compared with one another.
摘要翻译：公开了一种用于确定借助于计算机断层摄影单元获得的测量值的至少一个缩放因子的方法。计算机断层摄影单元包括可绕公共旋转轴线旋转的至少两个记录系统。每个系统包括X射线源和具有用于检测从X射线源发出的X射线的检测器元件的检测器。为了在图像重构中使用两个记录系统的测量值来减少伪像，基于来自投影的测量值来确定第一或第二记录系统的测量值的缩放因子借助于两个记录系统从物体记录。两个记录系统中的每一个用于以至少基本上相同的投影角度记录至少一个投影，其测量值彼此进行比较。

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