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  Aortic pulse wave velocities using real-time phase-contrast MRI.

Joseph, A. A., Fasshauer, M., Merboldt, K. D., & Frahm, J. (2015). Aortic pulse wave velocities using real-time phase-contrast MRI. The Open Medical Imaging Journal, 9, 9-14. doi:10.2174/1874347101509010009.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0026-CE41-E Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-10FC-C
Genre: Journal Article

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 Creators:
Joseph, A. A.1, Author              
Fasshauer, M., Author
Merboldt, K. D.1, Author              
Frahm, J.1, Author              
Affiliations:
1Biomedical NMR Research GmbH, MPI for biophysical chemistry, Max Planck Society, ou_578634              

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Free keywords: Real-time MRI; Phase-contrast MRI; Pulse wave velocity; Blood flow
 Abstract: Purpose: To evaluate aortic pulse wave velocities obtained by real-time phase-contrast (PC) MRI in comparison to cine PC MRI. Methods: Real-time PC MRI of eight healthy volunteers employed highly undersampled radial FLASH sequences and phase-sensitive image reconstructions by regularized nonlinear inversion (NLINV) at 40 ms temporal resolution and 1.3 mm in-plane resolution. Pulse wave velocities were analyzed for combinations of 2, 3 and 4 locations of aortic flow using time-to-upslope and cross-correlation methods. Results: For the time-to-upslope analysis mean pulse wave velocities ranged from 3.5 to 3.9 m s-1 for real-time PC MRI and from 3.5 to 3.8 m s-1 for cine PC MRI. A cross-correlation analysis of the same data resulted in 2.9 to 3.3 m s-1 and 3.3 to 3.7 m s-1, respectively. Conclusion: Real-time PC MRI determined aortic pulse wave velocities from single cardiac cycles in close correspondence to values obtained by cine PC MRI.

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Language(s): eng - English
 Dates: 2015-06-26
 Publication Status: Published online
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 Rev. Method: Peer
 Identifiers: DOI: 10.2174/1874347101509010009
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Title: The Open Medical Imaging Journal
Source Genre: Journal
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Pages: - Volume / Issue: 9 Sequence Number: - Start / End Page: 9 - 14 Identifier: -