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- Title
Projection reconstruction MR imaging using FOCUSS.
- Authors
Ye, Jong Chul; Tak, Sungho; Han, Yeji; Park, Hyun Wook
- Abstract
The focal underdetermined system solver (FOCUSS) was originally designed to obtain sparse solutions by successively solving quadratic optimization problems. This article adapts FOCUSS for a projection reconstruction MR imaging problem to obtain high resolution reconstructions from angular under-sampled radial k-space data. We show that FOCUSS is effective for projection reconstruction MRI, since medical images are usually sparse in some sense and the center region of the undersampled radial k-space samples still provides a low resolution, yet meaningful, image essential for the convergence of FOCUSS. The new algorithm is successfully applied for synthetic data as well as in vivo brain imaging obtained by under-sampled radial spin echo sequence. Magn Reson Med 57:764-775, 2007. © 2007 Wiley-Liss, Inc.
- Publication
Magnetic Resonance in Medicine, 2007, Vol 57, Issue 4, p764
- ISSN
0740-3194
- Publication type
Article
- DOI
10.1002/mrm.21202