An efficient super-resolution approach for obtaining isotropic 3-D imaging using 2-D multi-slice MRI

An approach for obtaining both a high-resolution and high-contrast 3D MRI image volume, desirable for image-guided minimally invasive brain surgery, is proposed. Current MRI imaging techniques, especially in situations where contrast requirements dictate use of T2- weighed sequences with long repetition times, do not deliver sufficient resolution in the cross-slice direction. As SRR techniques can be very attractive for obtaining isotropic 3D MRI images from the anisotropic 2D multi-slice volumes, we adopt in this work a MAP super-resolution method with modified regularization parameters. Experiment results demonstrate that resolution enhancement and better edge definition are obtained. (C) 2013 Production and hosting by Elsevier B.V. on behalf of Faculty of Computers and Information, Cairo University.