| Zugriffsnummer | 44642 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | Bilateral multiband 4D flow MRI of the carotid arteries at 7T |
| Autor(in); Institution |
Schmitter, Sebastian; 8.1, Biomedizinische Magnetresonanz, PTB-Berlin
Adriany, G.; Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN, USA
Waks, M.; Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN, USA
Moeller, S.; Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN, USA
Aristova, M.; McCormick School of Engineering, Northwestern University, Evanston, USA
Vali, A.; Feinberg School of Medicine, Northwestern University, Chicago, USA
Auerbach, E.; Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN, USA
Van de Moortele, P.; Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN, USA
Ugurbil, K.; Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN, USA
Schnell, S.; Feinberg School of Medicine, Northwestern University, Chicago, USA
|
| Quelle/Jahr | Magnetic Resonance in Medicine: 84 (2020), 4, 1947 - 1960 |
| ISSN | 0740-3194 (PRINT) ; 1522-2594 (ONLINE) |
| DOI | |
| Verlag | New York, NY: Willey |
| Freie Schlagworte | 4D flow MRI ; 7 Tesla ; carotid artery ; multiband ; SMS |
| Zusammenfassung | Purpose: Simultaneous multislab (SMSb) 4D flow MRI was developed and implemented at 7T for accelerated acquisition of the 3D blood velocity vector field in both carotid bifurcations. Methods: SMSb was applied to 4D flow to acquire blood velocities in both carotid bifurcations in sagittal orientation using a local transmit/receive coil at 7T. urn:x-wiley:07403194:media:mrm28256:mrm28256-math-0001 transmit efficiency was optimized by urn:x-wiley:07403194:media:mrm28256:mrm28256-math-0002 shimming. SMSb 4D flow was obtained in 8 healthy subjects in single‐band (SB) and multiband (MB) fashion. Additionally, MB data were retrospectively undersampled to simulate GRAPPA R = 2 (MB2_GRAPPA2), and both SB datasets were added to form an artificial MB dataset (SumSB). The band separation performance was quantified by signal leakage. Peak velocity and total flow values were calculated and compared to SB via intraclass correlation analysis (ICC). Results: Clean slab separation was achieved yielding a mean signal leakage of 13% above the mean SB noise level. Mean total flow for MB2, SumSB, and MB_GRAPPA2 deviated less than 9% from the SB values. Peak velocities averaged over all vessels and subjects were 0.48 ± 0.11 m/s for SB, 0.47 ± 0.12 m/s for SumSB, 0.50 ± 0.13 m/s for MB2, and 0.53 ± 0.13 m/s for MB2_GRAPPA2. ICC revealed excellent absolute agreement and consistency of total flow for all methods compared to SB2. Peak velocity showed good to excellent agreement and consistency for SumSB and MB2 and MB2_GRAPPA2 method showed poor to excellent agreement and good to excellent consistency. Conclusion: Simultaneous multislab 4D Flow MRI allows accurate quantification of total flow and peak velocity while reducing scan times. |
| Kostenfreier Zugang | Open Access Hybrid |
| Rechteinformation | CC BY 4.0 ; Creative Commons Attribution 4.0 License |
| Themenbereich der Metrologie | Metrologie in der Medizin |
| Förderinformationen (1) |
Förderername: American Heart Association (AHA)
Förderer ID: 0000 0001 2169 3924 Förderer ID Typ: ISNI Förderungsnummer: Grant/Award Number: 16SDG30420005 |
| Förderinformationen (2) |
Förderername: National Institutes of Health (NIH)
Förderer ID: 0000 0001 1942 0345 Förderer ID Typ: ISNI Förderungsnummer: Grant/Award Number: 1R21 NS106696-01, P41 EB027061, R01 EB006835, R01 EB007327, R21 EB009138 and S10 RR26783; |
Zitierung
Schmitter, S., Adriany, G., Waks, M., Moeller, S., Aristova, M., Vali, A., Auerbach, E., Van de Moortele, P., Ugurbil, K., & Schnell, S. (2020). Bilateral multiband 4D flow MRI of the carotid arteries at 7T. Magnetic Resonance in Medicine, 84(4), 1947–1960. https://doi.org/10.1002/mrm.28256