Spiral PILS Coronary Artery Imaging
Hu P, Meyer C
University of Virginia
The goal of this study is to apply the partially parallel imaging with localized sensitivities (PILS) technique to spiral coronary artery imaging. We use spiral trajectories that are under-sampled between interleaves and a Fermi mask is applied to each coil image generated by gridding to suppress aliasing artifacts. The resulting coil images are combined using square-root of sum-of-squares to reconstruct the final image. Spiral coronary images are acquired and aliasing-free bright blood and black blood images are successfully reconstructed using spiral PILS. As a high SNR parallel imaging method, PILS is a valuable tool in breath-held coronary artery imaging.