Accelerated Sub-Mm Whole-Heart Coronary MRI: Compressed Sensing Vs. Parallel Imaging

Mehmet Akakaya¹, Tamer A. Basha¹, Raymond H. Chan¹, Warren J. Manning¹, Reza Nezafat¹

Despite significant advances over the past decade, coronary MRI still faces major challenges, including lengthy acquisition time, low signal-to-noise-ratio (SNR), and limited spatial resolution. Recently, it was shown that higher spatial resolution in sub-mm range may improve the detection of stenosis in targeted coronary MRI. However, higher spatial resolution also results in lower SNR and increased acquisition time, hindering its practicality. In this study, we sought to investigate whether an advanced compressed sensing technique can be applied to 6-fold accelerated sub-mm whole-heart coronary MRI, and compared it to parallel imaging, the state-of-the-art accelerated imaging technique in coronary MRI.