Robust autocalibrated loraks for epi ghost correction.

We present a new structured low-rank matrix recovery ghost correction method that we call Robust Autocalibrated LORAKS (RAC-LORAKS). RAC-LORAKS incorporates constraints from autocalibration data to avoid ill-posedness, but allows adaptation of these constraints to gain robustness against possible autocalibration imperfections. RAC-LORAKS is tested in two challenging scenarios: highly-undersampled multi-channel EPI of the brain, and cardiac EPI with a double-oblique slice orientation. Results show that RAC-LORAKS can provide substantial improvements over existing ghost correction methods, and potentially enables new imaging applications that were previously confounded by ghost artifacts.
PMID: 30984344 [PubMed]

Source: Proceedings - International Symposium on Biomedical Imaging - April 17, 2019 Category: Radiology Tags: Proc IEEE Int Symp Biomed Imaging Source Type: research