A new method for the determination of aortic pulse wave velocity using cross-correlation on 2D PCMR velocity data
✍ Scribed by Samuel W. Fielden; Brandon K. Fornwalt; Michael Jerosch-Herold; Robert L. Eisner; Arthur E. Stillman; John N. Oshinski
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- English
- Weight
- 424 KB
- Volume
- 27
- Category
- Article
- ISSN
- 1053-1807
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✦ Synopsis
Abstract
Purpose
To evaluate the reproducibility of a new multisite axial pulse wave velocity (PWV) measurement technique that makes use of 2D PCMR data and cross‐correlation analysis.
Materials and Methods
PWV was estimated with MRI in 13 healthy volunteers by a transit‐time technique (TT), a multisite technique utilizing 1D PCMR data in the descending aorta (FOOT), and a new multisite axial technique that uses 2D PCMR data over the ascending, transverse, and descending sections of the aorta (2D‐XC).
Results
No significant difference was observed between PWV measurements values measured by the three techniques. However, 2D‐XC displayed significantly better intertest reproducibility than either the TT or FOOT methodologies. Average percent difference between scans: TT: 15.8% ± 13.4%, FOOT: 21.3% ± 16.9%, 2D‐XC: 7.72% ± 4.73%. P = 0.02 for both 2D‐XC/TT comparison and 2D‐XC/FOOT comparison.
Conclusion
2D‐XC is a more reproducible method than either the established TT or FOOT methods to estimate the aortic PWV. J. Magn. Reson. Imaging 2008;27:1382–1387. © 2008 Wiley‐Liss, Inc.