Keywords: Vascular, Cardiovascular, low-field, congenital heart disease
Motivation: Low-field MRI is promising to enhance equity in medical care and accessibility for obese, claustrophobic patients and patients with implanted electronic devices. The investigation of the performance of 3D whole-heart imaging at low-field is still limited.
Goal(s): To implement and evaluate a free-breathing image-navigator based framework for 3D whole-heart imaging with isotropic resolution at 0.55T.
Approach: A 3D whole-heart free-breathing framework including image-based navigation, respiratory motion-correction reconstruction and patch-based denoising was implemented at 0.55T. The diagnostic performance of 3D whole-heart imaging was evaluated versus its counterpart at 1.5T.
Results: 3D whole-heart imaging at 0.55T offers good image and diagnostic quality, comparable to 1.5T.
Impact: This study demonstrates that high-quality 3D whole-heart imaging can be achieved at 0.55T showing comparable image and diagnostic quality to the current clinical standard in both healthy subjects and clinical patients, paving the pathway for affordable and accessible MRI.
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