k-t accelerated aortic 4D flow MRI in under two minutes: Feasibility and impact of resolution, k-space sampling patterns, and respiratory navigator gating on hemodynamic measurements
| العنوان: | k-t accelerated aortic 4D flow MRI in under two minutes: Feasibility and impact of resolution, k-space sampling patterns, and respiratory navigator gating on hemodynamic measurements |
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| المؤلفون: | Bollache, Emilie, Barker, Alex J, Dolan, Ryan Scott, Carr, James C, van Ooij, Pim, Ahmadian, Rouzbeh, Powell, Alex, Collins, Jeremy D, Geiger, Julia, Markl, Michael |
| المساهمون: | Northwestern University Feinberg School of Medicine, Academic Medical Center - Academisch Medisch Centrum [Amsterdam] (AMC), University of Amsterdam [Amsterdam] (UvA), University Hospital of Würzburg, University of Zurich, Markl, Michael, Other departments |
| المصدر: | Magnetic Resonance in Medicine Magnetic Resonance in Medicine, Wiley, 2018, 79 (1), pp.195-207. ⟨10.1002/mrm.26661⟩ Magnetic resonance in medicine, 79(1), 195-207. John Wiley and Sons Inc. |
| بيانات النشر: | HAL CCSD, 2018. |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | Adult, Male, Time Factors, [SDV]Life Sciences [q-bio], k-t acceleration, 610 Medicine & health, Aortic Coarctation, Ventricular Function, Left, Article, aortic hemodynamics, short scan time, Imaging, Three-Dimensional, 2741 Radiology, Nuclear Medicine and Imaging, Humans, 4D flow magnetic resonance imaging, Aorta, Aged, Hemodynamics, Reproducibility of Results, Middle Aged, navigator gating, Image Enhancement, Magnetic Resonance Imaging, Healthy Volunteers, k-space sampling, 10036 Medical Clinic, Calibration, Female, Artifacts, Algorithms, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology |
| الوصف: | International audience; Purpose: To assess the performance of highly accelerated free-breathing aortic four-dimensional (4D) flow MRI acquired in under 2 minutes compared to conventional respiratory gated 4D flow.Methods: Eight k-t accelerated nongated 4D flow MRI (parallel MRI with extended and averaged generalized autocalibrating partially parallel acquisition kernels [PEAK GRAPPA], R = 5, TRes = 67.2 ms) using four ky -kz Cartesian sampling patterns (linear, center-out, out-center-out, random) and two spatial resolutions (SRes1 = 3.5 × 2.3 × 2.6 mm3 , SRes2 = 4.5 × 2.3 × 2.6 mm3 ) were compared in vitro (aortic coarctation flow phantom) and in 10 healthy volunteers, to conventional 4D flow (16 mm-navigator acceptance window; R = 2; TRes = 39.2 ms; SRes = 3.2 × 2.3 × 2.4 mm3 ). The best k-t accelerated approach was further assessed in 10 patients with aortic disease.Results: The k-t accelerated in vitro aortic peak flow (Qmax), net flow (Qnet), and peak velocity (Vmax) were lower than conventional 4D flow indices by ≤4.7%, ≤ 11%, and ≤22%, respectively. In vivo k-t accelerated acquisitions were significantly shorter but showed a trend to lower image quality compared to conventional 4D flow. Hemodynamic indices for linear and out-center-out k-space samplings were in agreement with conventional 4D flow (Qmax ≤ 13%, Qnet ≤ 13%, Vmax ≤ 17%, P > 0.05).Conclusion: Aortic 4D flow MRI in under 2 minutes is feasible with moderate underestimation of flow indices. Differences in k-space sampling patterns suggest an opportunity to mitigate image artifacts by an optimal trade-off between scan time, acceleration, and k-space sampling. Magn Reson Med 79:195-207, 2018. © 2018 International Society for Magnetic Resonance in Medicine. |
| اللغة: | English |
| تدمد: | 0740-3194 1522-2594 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=pmid_dedup__::57acbd7ac00bfa299f1efd7de7b6040d https://hal.sorbonne-universite.fr/hal-02733602 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.pmid.dedup....57acbd7ac00bfa299f1efd7de7b6040d |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 07403194 15222594 |
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