Fluorocarbon-23 measure of cat cerebral blood flow by nuclear magnetic resonance

James R. Ewing, Craig A. Branch, Susan C. Fagan, J. A. Helpern, Robert T. Simkins, Shazad M. Butt, K. M. Welch

Research output: Contribution to journalArticlepeer-review

23 Scopus citations


We employed fluorocarbon-23 (trifluoromethane) as a nuclear magnetic resonance gaseous indicator of cerebral blood flow in seven cats. Pulsed inhalation of this indicator and switching between two coils allowed the acquisition of both an arterial input and a cerebral response function, making possible multicompartmental curve fits to cerebral uptake and clearance data. The brain: blood partition coefficient for trifluoromethane was 0.9 for both gray and white matter. Fast-compartment blood flows were normal and showed appropriate CO2 reactivity. Slow-compartment blood flows did not demonstrate CO2 reactivity, probably because cranial as well as white-matter blood flows were lumped together in the slow compartment Although cerebral blood flow was stable during administration of 60% trifluoromethane, the compound did prove to be a mild cardiac sensitizer to epinephrine in five cats.

Original languageEnglish (US)
Pages (from-to)100-106
Number of pages7
Issue number1
StatePublished - Jan 1990
Externally publishedYes


  • Cats
  • Cerebral blood flow
  • Nuclear magnetic resonance

ASJC Scopus subject areas

  • Clinical Neurology
  • Cardiology and Cardiovascular Medicine
  • Advanced and Specialized Nursing


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