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1. 发明授权

US06829325B2 X-ray CT apparatus and processing method therefor 失效
标题翻译： X射线CT装置及其处理方法
公开(公告)号：US06829325B2
公开(公告)日：2004-12-07
申请号：US10319354
申请日：2002-12-13
申请人： Koichi Shida , Naoyuki Kawachi
发明人： Koichi Shida , Naoyuki Kawachi
IPC分类号： A61B603
CPC分类号： G06T11/005 , A61B6/032 , Y10S378/901
摘要： With the object of improving image quality while keeping short the time taken to reconstruct the first X-ray tomogram at the time of start of scanning in its real-time display mode, an X-ray CT apparatus having a rotary unit for causing an X-ray source and an X-ray detector for detecting X-rays from the X-ray source to rotate integrally around a subject, is provided with a full data reconstructing device for reconstructing tomograms on the basis of penetrating X-ray data of each view detected during a full turn around the subject, a segment data reconstructing device for reconstructing tomograms on the basis of penetrating X-ray data of each view detected during a turn by (180+&agr;) degrees, and a change-over device for counting the tomograms reconstructed after the start of scanning, and changing over between the full data reconstructing device and segment data reconstructing device according to the count.
摘要翻译：为了在实时显示模式下扫描开始时保持缩短重构第一X射线断层图像所花费的时间的目的，提供一种具有旋转单元的X射线CT装置，其用于使X 射线源和用于检测来自X射线源的X射线以及围绕被摄体整体旋转的X射线检测器，设置有用于根据每个视图的穿透X射线数据重建断层图像的完整数据重建装置在整个旋转周期期间检测到的段数据重建装置，用于基于在转弯（180±α）度期间检测到的每个视图的穿透X射线数据来重建断层图像，以及用于计数扫描开始后重建的断层图像，并根据计数在全数据重建装置和段数据重建装置之间切换。

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