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    • 33. 发明授权
    • Method and device for the iterative reconstruction of cardiac images
    • 心脏图像重复重建的方法和装置
    • US07596204B2
    • 2009-09-29
    • US11908415
    • 2006-03-09
    • Andy ZieglerMichael GrassThomas Koehler
    • Andy ZieglerMichael GrassThomas Koehler
    • A61B6/00
    • G06T11/006A61B6/027G06T2211/424
    • The invention relates to a method and a device for the iterative reconstruction of cross-sectional images of the heart (7) of a patient based on projections (P1, . . . P5) from different directions which are for example generated with a helical cone-beam CT scanner. A cardiac weight function (f) quantifies how near the projections (P1, . . . ) are to a given observation phase (To) of the heart cycle based on simultaneously recorded electrocardiographic signals (ECG). The whole set of projections (P1, . . . ) is divided into subsets (S1, . . . ) which each contain only projections corresponding to a similar cardiac weight (f), and an iterative reconstruction algorithm like ART uses in one update or iteration step all projections of such a subset (S1, . . . ) simultaneously.
    • 本发明涉及一种用于基于来自不同方向的投影(P1,...,P5)迭代重建患者心脏(7)的横截面图像的方法和装置,其例如用螺旋锥体 光束CT扫描仪。 心脏重量函数(f)基于同时记录的心电图信号(ECG)量化投影(P1,...)附近的心脏周期的给定观察阶段(To)附近。 整个投影组(P1 ...)分为子集(S1,...),每个子集只包含与相似的心脏重量(f)相对应的投影,像ART这样的迭代重建算法在一个更新或 迭代步骤同时对所述子集(S1,...)进行所有投影。