دورية أكاديمية
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 E; Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA., Barker AJ; Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA., Dolan RS; Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA., Carr JC; Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA., van Ooij P; Department of Radiology, Academic Medical Center, Amsterdam, the Netherlands., Ahmadian R; Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA., Powell A; Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA., Collins JD; Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA., Geiger J; Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA.; Department of Diagnostic and Interventional Radiology, University Hospital of Würzburg, Würzburg, Germany., Markl M; Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA.; Department of Biomedical Engineering, McCormick School of Engineering, Northwestern University, Chicago, Illinois, USA. |
| المصدر: | Magnetic resonance in medicine [Magn Reson Med] 2018 Jan; Vol. 79 (1), pp. 195-207. Date of Electronic Publication: 2017 Mar 07. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Wiley Country of Publication: United States NLM ID: 8505245 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1522-2594 (Electronic) Linking ISSN: 07403194 NLM ISO Abbreviation: Magn Reson Med Subsets: MEDLINE |
| أسماء مطبوعة: | Publication: 1999- : New York, NY : Wiley Original Publication: San Diego : Academic Press, |
| مواضيع طبية MeSH: | Aorta/*diagnostic imaging , Magnetic Resonance Imaging/*methods, Adult ; Aged ; Algorithms ; Aorta/pathology ; Aortic Coarctation/diagnostic imaging ; Aortic Coarctation/surgery ; Artifacts ; Calibration ; Female ; Healthy Volunteers ; Hemodynamics ; Humans ; Image Enhancement/methods ; Imaging, Three-Dimensional/methods ; Male ; Middle Aged ; Reproducibility of Results ; Time Factors ; Ventricular Function, Left |
| مستخلص: | 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 k 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. (© 2017 International Society for Magnetic Resonance in Medicine.) |
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| معلومات مُعتمدة: | K25 HL119608 United States HL NHLBI NIH HHS; R01 HL115828 United States HL NHLBI NIH HHS; R01 HL133504 United States HL NHLBI NIH HHS |
| فهرسة مساهمة: | Keywords: 4D flow magnetic resonance imaging; aortic hemodynamics; k-space sampling; k-t acceleration; navigator gating; short scan time |
| تواريخ الأحداث: | Date Created: 20170308 Date Completed: 20180730 Latest Revision: 20200311 |
| رمز التحديث: | 20221213 |
| مُعرف محوري في PubMed: | PMC5589472 |
| DOI: | 10.1002/mrm.26661 |
| PMID: | 28266062 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 1522-2594 |
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| DOI: | 10.1002/mrm.26661 |