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Proceedings Paper

Technique for reduction of MRI 3D affine motion artifacts
Author(s): Reza A. Zoroofi; Kazuhiro Homma; Yoshinobu Sato; Shinichi Tamura; Hiroaki Naito
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Paper Abstract

Patient motion plays a major role in the degradation of image quality provided with magnetic resonance imaging (MRI). This effect is called motion artifact. In this work, we address the problem of MRI artifact arising from a 3-D affine motion. We show that the effect of such a motion is imposing phase error, amplitude distortion, and non uniform sampling to the Fourier domain (k-space) of the acquired MR data. Based on the previous works, a reconstruction algorithm is proposed to reduce the corresponding MRI artifact. In order to investigate the problem and proposed solution, the Poisson and Gaussian probability density functions (PDF) are used to randomly generate the location, amplitude, and number of a subject displacements during data acquisition. Then, the effect of 3-D affine motion parameters on creating MRI artifact and also the performance of the employed technique to suppress the resultant artifact are reported in the paper.

Paper Details

Date Published: 6 June 2000
PDF: 10 pages
Proc. SPIE 3979, Medical Imaging 2000: Image Processing, (6 June 2000); doi: 10.1117/12.387677
Show Author Affiliations
Reza A. Zoroofi, Osaka Univ. (Iran)
Kazuhiro Homma, Ministry of International Trade and Industry (Japan)
Yoshinobu Sato, Osaka Univ. (Japan)
Shinichi Tamura, Osaka Univ. (Japan)
Hiroaki Naito, Osaka Univ. School of Allied Health Sciences (Japan)


Published in SPIE Proceedings Vol. 3979:
Medical Imaging 2000: Image Processing
Kenneth M. Hanson, Editor(s)

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