Two motion-detection algorithms for projection-reconstruction magnetic resonance imaging: theory and experimental verification

被引：5
|
作者：
Van de Walle, R [1 ]
Lemahieu, I [1 ]
Achten, E [1 ]
机构：
[1] State Univ Ghent, Dept Elect & Informat Syst, B-9000 Ghent, Belgium
来源：
COMPUTERIZED MEDICAL IMAGING AND GRAPHICS | 1998年 / 22卷 / 02期
关键词：
medical imaging; radiology; magnetic resonance imaging; artifacts; motion; motion detection;
D O I：
10.1016/S0895-6111(98)00013-5
中图分类号：
R318 [生物医学工程];
学科分类号：
0831 ;
摘要：
In this paper, projection-reconstruction (PR) magnetic resonance (MR) imaging is considered. We present two new quantitative techniques that allow to check when motion was present during a PR MF: experiment. No a priori information about the motion is required since only the measured MR signals are used in the calculations. Moreover, the proposed methods can be implemented on a standard personal computer or workstation. It is experimentally shown that both methods are able to detect motion intervals with an accuracy of one repetition time. (C) 1998 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：115 / 121
页数：7
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