Keywords: Vascular, Cardiovascular
Motivation: MRI at 0.55T with an 80cm bore has allowed improved access to CMR for patients. The application of robust native whole-thorax MRA at low-field remains limited especially due to the challenge of respiratory motion.
Goal(s): To develop a large field-of-view, whole-thorax, self-gated and breathing-motion corrected native MRA with a predictable scan time and efficient data usage at 0.55T.
Approach: An optimized sampling pattern is used with T2-prep, dual-echo Dixon and non-rigid motion correction is developed.
Results: The approach was successfully applied in-vivo and shows successful mitigation of motion artefacts and blurring and good separation of water and fat in the entire thoracic region.
Impact: Proof of the viability of self-gated MOCO MRA at 0.55T.
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