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Nuclear magnetic resonance velocity spectra of steady flow
Author(s) -
Wendt Richard E.,
Nitz Wolfgang R.,
Murphy Paul H.
Publication year - 1990
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/mrm.1910150110
Subject(s) - spectral line , flow velocity , nuclear magnetic resonance , reynolds number , flow (mathematics) , physics , volumetric flow rate , nmr spectra database , mechanics , chemistry , turbulence , astronomy
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.