AJP - Heart Journal of Neurophysiology
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Am J Physiol Heart Circ Physiol 245: H1061-H1065, 1983;
0363-6135/83 $5.00
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AJP - Heart and Circulatory Physiology, Vol 245, Issue 6 1061-H1065, Copyright © 1983 by American Physiological Society

ARTICLES

Computer registration of radioactive indicator-dilution curves

A. P. Shepherd, M. A. Perry, G. M. Alexander, D. N. Granger, G. L. Riedel, P. R. Kvietys and C. P. Franke

A system is described for recording indicator-dilution curves produced by gamma radiation-emitting tracers. The system consists of a flow-through cuvette in a well counter, appropriate commercially available gamma radiation-detecting equipment, an Apple II computer, and a two-channel pulse-counting interface of our own design. With the counting interface and the software described here, an investigator can simultaneously record two indicator-dilution curves produced by gamma emitters. Instead of having to wait hours or days for results, the investigator can watch the data being recorded and display the results in graphic form almost immediately after each injection.




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