ArticleJournal of magnetic resonance imaging : JMRI2021
Visualization of Human Aortic Valve Dynamics Using Magnetic Resonance Imaging with Sub-Millisecond Temporal Resolution.
Article in Journal of magnetic resonance imaging : JMRI, 2021. 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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The trial behind it
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Who cites it
4 citing papers in PubMed.
- Numerical validation of the applicability of the simplified ventricular model in the analysis of hemolysis in the mitral paravalvular leak.Frontiers in bioengineering and biotechnology · 2025Article
- Image-Based Computational Fluid Dynamics to Compare Two Repair Techniques for Mitral Valve Prolapse.Annals of biomedical engineering · 2024Article
- Gradient-echo-train-based sub-millisecond periodic event encoded dynamic imaging with random (k, t)-space undersampling: k-t get-SPEEDI.Magnetic resonance in medicine · 2022Article
- MRI with sub-millisecond temporal resolution over a reduced field of view.Magnetic resonance in medicine · 2021Article
Corrections and comments
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Authors and funding
7 authors.
Funding
Abstract
backgroundVisualization of aortic valve dynamics is important in diagnosing valvular diseases but is challenging to perform with magnetic resonance imaging (MRI) due to the limited temporal resolution. PURPOSE: To develop an MRI technique with sub-millisecond temporal resolution and demonstrate its application in visualizing rapid aortic valve opening and closing in human subjects in comparison with echocardiography and conventional MRI techniques. STUDY TYPE: Prospective. POPULATION: Twelve healthy subjects. FIELD STRENGTH/SEQUENCE: 3 T; gradient-echo-train-based sub-millisecond periodic event encoded imaging (get-SPEEDI) and balanced steady-state free precession (bSSFP). ASSESSMENT: Images were acquired using get-SPEEDI with a temporal resolution of 0.6 msec. get-SPEEDI was triggered by an electrocardiogram so that each echo in the gradient echo train corresponded to an image at a specific time point, providing a time-resolved characterization of aortic valve dynamics. For comparison, bSSFP was also employed with 12 msec and 24 msec temporal resolutions, respectively. The durations of the aortic valve rapid opening (T STATISTICAL TEST: Parameters were compared between the three sequences, together with the echocardiography results, with a Mann-Whitney U test.
resultsSignificantly shorter T LEVEL OF EVIDENCE: 1 TECHNICAL EFFICACY STAGE: 1.
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Registered trials
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