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PubMed · 1392256

Computer-controlled flow simulator for MR flow studies.

R Frayne·D W Holdsworth·L M Gowman·D W Rickey·M Drangova·A Fenster·B K Rutt
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Abstract

A novel computer-controlled flow simulator for use in magnetic resonance (MR) flow experiments was evaluated. The accuracy in constant-flow mode was better than 1%. The accuracy in pulsatile-flow mode was found to be dependent on the interconnecting tubing. The short-term and long-term reproducibilities of pulsatile waveforms were less than or equal to 0.4 mL/sec (1 standard deviation). Increased response times due to the lengths of tubing required in MR flow experiments were surmounted by using a modified tubing configuration and precompensated waveforms. Piston reversal was found not to cause major difficulties in MR flow experiments.

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Blood CirculationBlood VesselsHumansMagnetic Resonance ImagingModels, CardiovascularModels, StructuralRheologyJournal ArticleResearch Support, Non-U.S. Gov't

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R Frayne, D W Holdsworth, L M Gowman, D W Rickey, M Drangova, A Fenster, B K Rutt. Computer-controlled flow simulator for MR flow studies.. https://doi.org/10.1002/jmri.1880020522

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