公开(公告)号：US5454019A

公开(公告)日：1995-09-26

申请号：US851930

申请日：1992-03-16

申请人： Shinichi Migita ,  Osamu Miyazaki ,  Testuo Nakazawa

发明人： Shinichi Migita ,  Osamu Miyazaki ,  Testuo Nakazawa

IPC分类号： A61B6/03 ,  G01N23/04 ,  G06T11/00 ,  G01N23/083

CPC分类号： A61B6/032 ,  G01N23/046 ,  G06T11/005 ,  G01N2223/419 ,  G01N2223/612 ,  Y10S378/901

摘要： A computed tomography system includes an image reconstruction data generator for generating image reconstruction data for a desired slice plane of an object in accordance with measuring projection data, the image reconstruction data being obtained from measuring projection data obtained at each of a plurality of rotation positions of a radiation source, and an image reconstructor for obtaining tomographic image data of the object for the desired slice plane in accordance with the image reconstruction data. The image reconstruction data generator has the capability of grouping the measuring projection data into a plurality of groups respectively corresponding to a plurality of desired slice planes of the object, the desired slice planes being spaced apart from each other by a distance corresponding to one rotation position of the radiation source, with each of the groups corresponding to a continuous rotation range of 360.degree. of the radiation source, and successively using the measuring projection data of each group for the image reconstruction data.

摘要翻译： 计算机断层摄影系统包括图像重建数据发生器，用于根据测量投影数据产生对象的期望切片平面的图像重建数据，所述图像重建数据是从测量在多个旋转位置 辐射源，以及图像重建器，用于根据图像重建数据获得用于期望切片平面的物体的断层图像数据。 图像重建数据生成器具有将测量投影数据分组成分别对应于对象的多个期望切片平面的多个组的能力，期望的切片平面彼此间隔一个相当于一个旋转位置的距离 的辐射源，其中每个组对应于辐射源的360°的连续旋转范围，并且连续地使用每组的测量投影数据作为图像重建数据。