Superresolution in MRI: Application to human white matter fiber tract visualization by diffusion tensor imaging

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Abstract
A superresolution algorithm was applied to spatially shifted, single‐shot, diffusion‐weighted brain images to generate a new image with increased spatial resolution. Detailed two‐dimensional white matter fiber tract maps of the human brain resulting from application of the technique are shown. The method provides a new means for improving the resolution in cases where k‐space segmentation is difficult to implement. Diffusion‐weighted imaging and diffusion tensor imaging in vivo stand to benefit in particular because the necessity of obtaining high‐resolution scans is matched by the difficulty in obtaining them. Magn Reson Med 45:29–35, 2001.