Reformattable MAVRIC-SL Using Robust Principal Component Analysis and Variable Density Complementary Poisson Disc Sampling

MAVRIC-SL resolves metal-induced artifacts at the cost of additional scan time. A reconstruction using Robust Principal Component Analysis (RPCA) has been shown to considerably reduce scan times with minimal loss in image quality. We apply this scan time reduction to acquire isotropic MAVRIC-SL data that can be reformatted to all three planes, combining multiple high-resolution scans into a single, short, isotropic scan. We show retrospectively undersampled isotropic MAVRIC-SL RPCA reconstructions reformatted to three planes for the case of a hip phantom, and a volunteer with a titanium hip replacement. The RPCA reconstruction offers good image quality in multiple planes at clinically feasible scan times, with shorter scan times than separate high-resolution acquisitions.