General and efficient super-resolution method for multi- slice MRI

Authors:
D. H. J. Poot;V. Van Meir;J. Sijbers
Affiliations:
BIGR, Erasmus Medical Center, Rotterdam and Visionlab, University of Antwerp, Antwerp;Visionlab, University of Antwerp, Antwerp;Visionlab, University of Antwerp, Antwerp
Venue:
MICCAI'10 Proceedings of the 13th international conference on Medical image computing and computer-assisted intervention: Part I
Year:
2010

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Abstract

In this paper, a method is developed that reconstructs a high resolution image from an arbitrary set of multi-slice 3D MR images with a high in-plane resolution and a low through-plane resolution. Such images are often recorded to increase the efficiency of the acquisition. With a model of the acquisition of MR images, which is improved compared to previous super-resolution methods for MR images, a large system with linear equations is obtained. With the conjugated gradient method and this linear system, a high resolution image is reconstructed from MR images of an object. Also, a new and efficient method to apply an affine transformation to multi-dimensional images is presented. This method is used to efficiently reconstruction the high resolution image from multislice MR images with arbitrary orientations of the slices.