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Rapid average-flow velocity measurement by NMR

✍ Scribed by S. A. Altobelli; A. Caprihan; J. G. Davis; Eiichi Fukushima

Book ID
102526618
Publisher
John Wiley and Sons
Year
1986
Tongue
English
Weight
260 KB
Volume
3
Category
Article
ISSN
0740-3194

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✦ Synopsis

We describe an NMR method to make a quick determination of average fluid velocity by monitoring the change in phase of the magnetization during a transient signal. We give an example utilizing the second Cam-Purcell-Meiboom-Gill echo in which we measured the velocity of water up to 54 cm/s where each velocity was determined by data taken Over 2.5 ms.

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## Abstract A MR method is presented for measuring pulse wave velocity (PWV) and its application to assessing stiffness in the human thoracic aorta. This one‐dimensional (1D) flow displacement method applies a single RF comb excitation to the vessel, followed by an oscillating frequency encoding gr