MOTION ARTIFACT SUPPRESSION - A REVIEW OF POST-PROCESSING TECHNIQUES

被引：34

作者：

HEDLEY, M

YAN, H

机构：

[1] University of Sydney, Department of Electrical Engineering

来源：

MAGNETIC RESONANCE IMAGING | 1992年 / 10卷 / 04期

关键词：

MOTION ARTIFACTS; POSTPROCESSING ALGORITHM; MOTION MODEL; PARAMETER ESTIMATION;

D O I：

10.1016/0730-725X(92)90014-Q

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

Patient motion during data acquisition in magnetic resonance imaging causes artifacts in the reconstructed image, which for two-dimensional Fourier transform imaging techniques appear as blurring and ghost repetitions of the moving structures. While the problem with intra-view effects has been effectively addressed using gradient moment nulling techniques, there is no corresponding technique for inter-view effects with equal effectiveness and general applicability. A number of techniques have been proposed for correcting the inter-view effects, and these may be divided into those that minimise the corruption of the data, and those that post-process the data to restore the image. The techniques in the former category are briefly reviewed, then those in the latter category are examined in detail. These are analysed in terms of motion model, model parameter estimation, and data correction.

引用

页码：627 / 635

页数：9

共 54 条

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