ArticleMagnetic resonance in medicine2025
Highly efficient image navigator based 3D whole-heart cardiac MRA at 0.55T.
Article in Magnetic resonance in medicine, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Real-Time Targeted Slice Reacquisition for Motion-Corrupted Fetal Diffusion MRI.Magnetic resonance in medicine · 2026Article
- Respiratory Motion-Corrected Model-Based 3D Water-Fat MRA of the Thorax at 0.55 T.Magnetic resonance in medicine · 2026Article
- Highly efficient image navigator based 3D whole-heart cardiac MRA at 0.55T.Magnetic resonance in medicine · 2025Article
- High-resolution 3D whole-heart bright- and black-blood imaging with co-registered T2 mapping at 0.55 T.Frontiers in cardiovascular medicine · 2025Article
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Authors and funding
9 authors.
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Abstract
purposeTo develop and evaluate a highly efficient free-breathing and contrast-agent-free three-dimensional (3D) whole-heart Cardiac Magnetic Resonance Angiography (CMRA) sequence at 0.55T.
methodsFree-breathing whole-heart CMRA has been previously proposed at 1.5 and 3T. Direct application of this sequence to 0.55T is not possible due to changes in the magnetic properties of the tissues. To enable free-breathing CMRA at 0.55T, pulse sequence design and acquisition parameters of a previously proposed whole-heart CMRA framework are optimized via Bloch simulations. Image navigators (iNAVs) are used to enable nonrigid respiratory motion-correction and 100% respiratory scan efficiency. Patch-based low-rank denoising is employed to accelerate the scan and account for the reduced signal-to-noise ratio at 0.55T. The proposed approach was evaluated on 11 healthy subjects. Image quality was assessed by a clinical expert (1: poor to 5: excellent) for all intrapericardiac structures. Quantitative evaluation was performed by assessing the vessel sharpness of the proximal right coronary artery (RCA).
resultsOptimization resulted in an imaging flip angle of
conclusionThe proposed approach enables 3D whole-heart CMRA at 0.55T in a 6-min scan (
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