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Turbine flow sensor for volume‐flow rate verification in MR
Author(s) -
Frayne Richard,
Holdsworth David W.,
Smith Robert F.,
Kasrai Reza,
Larsen Jan P. T.,
Rutt Brian K.
Publication year - 1994
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.1910320318
Subject(s) - flow measurement , volumetric flow rate , flow (mathematics) , magnetic flow meter , volume (thermodynamics) , mass flow meter , calibration , linearity , ultrasonic flow meter , mechanics , acoustics , physics , thermodynamics , quantum mechanics
A turbine flow sensor for MR flow experiments has been evalusted using reference volume‐flow rate measurements obtained using an electromagnetic (EM) flow meter measurements and simultaneous phase contrast (PC) MR acquisitions. After calibration, the device was found to have accuracy (compared with the EM flow meter), linearity, and precision of better than ±1%, ±3.5%, 3.5%, respectively, in constant flow mode (0 to 30 ml s −1 ). The frequency response of the flow sensor was flat (within ±10%) up to 13.9 Hz. Volume‐flow rate measurements on constant and simulated physiologic flow waveforms were in close agreement with both the electromagnetic (EM) flow meter and the gated MR PC estimates.