Title :
Liquid flow velocity determination by NMR imaging
Author :
Altobelli, S.A. ; Caprihan, A. ; Fukushima, E. ; Majors, P.D.
Author_Institution :
Lovelace Med. Found., Albuquerque, NM, USA
Abstract :
The authors review quantitative liquid flow determination by a subset of nuclear magnetic resonance (NMR) called magnetic resonance imaging (MRI). These imaging techniques yield the velocity distribution of steady flows as well as the spatial distribution of a parameter characterizing turbulence. Three methods considered, with emphasis on the first two, are (1) bolus tracking after frequency encoding, (2) phase behavior of the nuclear spins traveling in a magnetic field gradient, and (3) the snapshot method for tracking slowly moving, chemically distinguishable species
Keywords :
biomedical NMR; biomedical measurement; haemodynamics; velocity measurement; NMR imaging; bolus tracking; chemically distinguishable species; frequency encoding; liquid flow velocity determination; magnetic resonance imaging; nuclear spins phase behaviour; parameter spatial distribution; snapshot method; steady flow velocity distribution; turbulence; Biomedical imaging; Chemicals; Encoding; Fluid flow; Frequency; Magnetic field measurement; Magnetic fields; Magnetic resonance imaging; Nuclear magnetic resonance; Velocity measurement;
Conference_Titel :
Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in
Conference_Location :
Seattle, WA
DOI :
10.1109/IEMBS.1989.95845
