Subject-specific motion correction factors for magnetic resonance coronary angiography

被引：3

作者：

Keegan, J ^{[1
]}

Gatehouse, P ^{[1
]}

Yang, GZ ^{[1
]}

Firmin, D ^{[1
]}

机构：

[1] Royal Brompton & Harefield NHS Trust, London, England

来源：

INTERNATIONAL WORKSHOP ON MEDICAL IMAGING AND AUGMENTED REALITY, PROCEEDINGS | 2001年

关键词：

D O I：

10.1109/MIAR.2001.930266

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

The success of slice-followed magnetic resonance coronary angiography is dependent on how accurately the motion of the arteries can be determined as a function of respiratory position. We have measured the correction factors relating the motion of the heart to that of the diaphragm in 3 orthogonal directions with both breath-holding and free-breathing techniques, showing large variations in all three factors between subjects. We have also shown that there are large variations in the factors calculated from breath-holding and free-breathing studies within the same patient, with breath-holding factors generally being higher. This has important consequences for the quality of slice-followed acquisitions as the majority ave acquired during free-breathing, with the correction factor implemented either being assumed to be fixed for all patients or having been determined through breath-holding acquisitions.

引用

页码：67 / 71

页数：5

共 17 条

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2-7

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