Technique for reduction of MRI 3D affine motion artifacts

Reza A. Zoroofi; Kazuhiro Homma; Yoshinobu Sato; Shinichi Tamura; Hiroaki Naito

doi:10.1117/12.387677

6 June 2000 Technique for reduction of MRI 3D affine motion artifacts

Reza A. Zoroofi, Kazuhiro Homma, Yoshinobu Sato, Shinichi Tamura, Hiroaki Naito

Proceedings Volume 3979, Medical Imaging 2000: Image Processing; (2000) https://doi.org/10.1117/12.387677
Event: Medical Imaging 2000, 2000, San Diego, CA, United States

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.

Citation Download Citation

Reza A. Zoroofi, Kazuhiro Homma, Yoshinobu Sato, Shinichi Tamura, and Hiroaki Naito "Technique for reduction of MRI 3D affine motion artifacts", Proc. SPIE 3979, Medical Imaging 2000: Image Processing, (6 June 2000); https://doi.org/10.1117/12.387677

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