Image-space automatic motion correction for MRI images

Armando Manduca; David S. Lake; Natalia Khaylova; Richard L. Ehman

doi:10.1117/12.532952

12 May 2004 Image-space automatic motion correction for MRI images

Armando Manduca, David S. Lake, Natalia Khaylova, Richard L. Ehman

Author Affiliations +

Proceedings Volume 5370, Medical Imaging 2004: Image Processing; (2004) https://doi.org/10.1117/12.532952
Event: Medical Imaging 2004, 2004, San Diego, California, United States

Abstract

Automatic retrospective motion correction algorithms based on iterative optimization of an image quality measure have been demonstrated in a variety of MRI acquisitions. These algorithms are computationally intensive and may require several minutes per image or more. One computational bottleneck is the need for an inverse FFT at each iteration to reconstruct and evaluate the image. We describe a method for performing the iterative search primarily in image space, greatly reducing the number of FFTs required. This can significantly increase the computational speed, particularly when the evaluation is performed only on a sub-region of the image.

Citation Download Citation

Armando Manduca, David S. Lake, Natalia Khaylova, and Richard L. Ehman "Image-space automatic motion correction for MRI images", Proc. SPIE 5370, Medical Imaging 2004: Image Processing, (12 May 2004); https://doi.org/10.1117/12.532952

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