A subspace‐based coil combination method for phased‐array magnetic resonance imaging
Abstract
Coil‐by‐coil reconstruction methods are followed by coil combination to obtain a single image representing a spin density map. Typical coil combination methods, such as square‐root sum‐of‐squares and adaptive coil combining, yield images that exhibit spatially varying modulation of image intensity. Existing practice is to first combine coils according to a signal‐to‐noise criterion, then postprocess to correct intensity inhomogeneity. If inhomogeneity is severe, however, intensity correction methods can yield poor results. The purpose of this article is to present an alternative optimality criterion for coil combination; the resulting procedure yields reduced intensity inhomogeneity while preserving contrast.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Mar 13, 2015
- Source ID
- 10.1002/mrm.25664
Entities
People
- Derya Gol Gungor
- Lee C Potter
Organizations
- Defense Advanced Research Projects Agency
- National Heart, Lung, and Blood Institute
- Ohio State University