公开(公告)号：US07502440B2

公开(公告)日：2009-03-10

申请号：US11396450

申请日：2006-04-04

申请人： Nobutoku Motomura ,  Akiyosi Kinda

发明人： Nobutoku Motomura ,  Akiyosi Kinda

IPC分类号： A61B6/03

CPC分类号： A61B6/032 ,  A61B6/5235 ,  G06T11/005 ,  G06T2211/432 ,  Y10S378/901

摘要： A radiodiagnostic apparatus includes a data collection unit, a primary correction unit, a body contour detection unit, a secondary correction unit, and a reconstruction unit. The primary correction unit calculates a plurality of primary extrapolation expression candidates for correcting second projection data so as to obtain third projection data candidates formed from the second projection data and a plurality of primary extrapolation expression candidates and for obtaining third projection data from the plurality of third projection data candidates.

摘要翻译： 放射诊断装置包括数据采集单元，主要校正单元，身体轮廓检测单元，次要校正单元和重建单元。 主校正单元计算用于校正第二投影数据的多个主外推表达式候选，以便获得由第二投影数据和多个主外插表达式候选形成的第三投影数据候选，并且用于从多个第三投影数据获得第三投影数据 投影数据候选。

公开(公告)号：US20060222145A1

公开(公告)日：2006-10-05

申请号：US11396450

申请日：2006-04-04

申请人： Nobutoku Motomura ,  Akiyosi Kinda

发明人： Nobutoku Motomura ,  Akiyosi Kinda

IPC分类号： H05G1/60 ,  A61B6/00 ,  G01N23/00 ,  G21K1/12

CPC分类号： A61B6/032 ,  A61B6/5235 ,  G06T11/005 ,  G06T2211/432 ,  Y10S378/901

摘要： A radiodiagnostic apparatus includes a data collection unit, a primary correction unit, a body contour detection unit, a secondary correction unit, and a reconstruction unit. The data collection unit collects a first projection data obtained at a projection angle within a projection angle range in which the whole portion of an object is within an effective acquisition field of a detector, and a second projection data obtained at a projection angle within a projection angle range in which a part of a truncated portion is out of the effective acquisition field of the detector, when the effective acquisition field of the detector is defined as a range limited by a collimator. The primary correction unit calculates a plurality of primary extrapolation expression candidates for correcting the second projection data so as to obtain third projection data candidates formed from the second projection data and the plurality of primary extrapolation expression candidates and for obtaining third projection data from the plurality of third projection data candidates. The body contour detection unit detects position information of a body contour in the second projection data. The secondary correction unit acquires a secondary extrapolation expression and for obtaining fourth projection data. The reconstruction unit reconstructs images on a slice-by-slice basis on the basis of the first projection data and the fourth projection data.

摘要翻译： 放射诊断装置包括数据采集单元，主要校正单元，身体轮廓检测单元，次要校正单元和重建单元。 数据收集单元收集以投影角度范围获得的投影角度的第一投影数据，其中物体的整个部分在检测器的有效采集场内，以及在投影中以投影角度获得的第二投影数据 当检测器的有效采集场被定义为由准直仪限制的范围时，截断部分的一部分超出检测器的有效采集场的角度范围。 主校正单元计算用于校正第二投影数据的多个主外插表达式候选，以便获得由第二投影数据和多个主外推表达式候选形成的第三投影数据候选，并且从多个 第三投影数据候选人。 身体轮廓检测单元检测第二投影数据中的身体轮廓的位置信息。 二次校正单元获取第二外推表达式并获得第四投影数据。 重建单元基于第一投影数据和第四投影数据逐个切片地重建图像。