## Abstract Velocity spectra can be derived from velocity‐encoded nuclear magnetic resonance (NMR) images. Velocity spectra are histograms showing the amounts of fluid flowing at different velocities in the sensitive volume of the measurement. Velocity spectra may prove to be useful in characterizi
Nuclear magnetic resonance velocity spectra of steady flow
✍ Scribed by Richard E. Wendt III; Wolfgang R. Nitz; Paul H. Murphy
- Publisher
- John Wiley and Sons
- Year
- 1990
- Tongue
- English
- Weight
- 683 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0740-3194
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✦ Synopsis
Abstract
Nuclear magnetic resonance (NMR) velocity spectra are a compact way to represent the flow information in a velocity‐resolved image set. Fully developed steady flow in long tubes gives NMR velocity spectra with average velocities which correlate well with the values derived from the flow rate. The ratio of average velocity to peak velocity correlates well with the Reynolds number. Tubes with compressed cross sections have velocity spectra similar to those of circular tubes. Tubes with irregular walls have velocity spectra in the entrance region that are markedly different from those from smooth‐walled tubes. © 1990 Academic Press, Inc.
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