Keywords: Low-Field MRI, Low-Field MRI, Heart, Cardiovascular, Pulse sequence design
Motivation: CMR has not seen widespread adoption beyond large urban academic centers. The reasons for this limited uptake include the cost and time-intensive nature of CMR. 5D Free-Running CMR using self-navigation (5D CMR) implemented on a low-field clinical scanner may help bridge this gap.
Goal(s): Investigate the feasibility of cardiac function measurements using 5D CMR on a 0.55T system.
Approach: 5D CMR data were collected in 10 adult subjects and compared to results from reference 2D cines. Right- and left-ventricular ejection fraction and left atrial volume were ascertained.
Results: 5D CMR allowed for time-efficient and concordant measurements when compared to the 2D reference method.
Impact: 5D Free-Running whole-heart CMR without the need for ECG, breath-holding, navigators, or complex scan plane planning enables a highly simplified and time-efficient assessment of myocardial function on a 0.55T clinical system in under 8 min.
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