Ferumoxytol-Enhanced 5D ROCK-MUSIC with Low-rank Tensor Reconstruction: Initial Feasibility in Pediatric Congenital Heart Disease

ROCK-MUSIC is a 4D whole heart MRI pulse sequence that has shown promise for fast imaging in pediatric congenital heart disease (CHD) without dependence on the ventilator respiratory gating signal. Recent research in cardiac multitasking with low rank tensor (LRT) reconstruction allows for decomposition of cardiorespiratory motion. In this preliminary work, we showed that LRT reconstruction can be applied to the ROCK-MUSIC acquisition to enable higher temporal resolution with cardiorespiratory resolved imaging. When compared to L1-ESPIRiT, the LRT approach is able to achieve comparable image quality.