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✔ Correction of motion artifacts in MRI caused by rotations at constant angular velocity

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Signal Processing, Vol. 70, No. 2. (30 October 1998), pp. 103-114, doi:10.1016/s0165-1684(98)00116-9
by Chaminda Weerasinghe, Hong Yan
posted to no-tag by stsaft ✚ on 2007-12-22 02:11:21 **
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Abstract

Rotational motion artifacts are notably prevalent in magnetic resonance (MR) images, such as of head and brain. Even a slight rotation during the data acquisition can have a significantly adverse effect on the quality and the diagnostic value of the image. This paper presents a post-processing technique for reducing the effects of rotation at a constant angular velocity. The rotation is constrained to be within the imaging plane. The correction algorithm is based on the separable nature of the 2D Fourier ...
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