Coronary Blood Flow Measured by I 131 lodo-antipyrine

Abstract
The use of I131 antipyrine for determining coronary blood flow in intact dogs is described. The correlation with the simultaneous nitrous oxide method was 0.91 ωm 0.22. Partition coefficient and tissue equilibration were directly determined (1.04 ω 0.13). The method as applied requires only two minutes of sampling and is adaptable to direct writing methods.