RADIOACTIVE ISOTOPES IN THE STUDY OF PERIPHERAL VASCULAR DISEASE
- 1 June 1949
- journal article
- research article
- Published by American Medical Association (AMA) in Archives of internal medicine (1908)
- Vol. 83 (6) , 620-631
- https://doi.org/10.1001/archinte.1949.00220350030003
Abstract
EVALUATION of the peripheral circulation can be accomplished with the use of radioactive isotopes.1Determination of a circulatory index depends on the rate of deposition of radioactive phosphorus (P32as a phosphate ion, in either phosphoric acid [H3PO4] or sodium phosphate [Na2HPO4]) in the tissues of an extremity; the index is then derived from a semilogarithmic plotting of the minute by minute increase in radioactivity in a selected site in the extremity (usually the sole of the foot). For statistical purposes, the reciprocal of the rate of deposition is used to calculate this index, according to the equations where C20is the theoretic number of counts at the end of twenty minutes and C2is the theoretic number of counts at the end of two minutes. In a series of normal persons, the mean rate of deposition of radioactive phosphorus in the tissues was actually less than inThis publication has 0 references indexed in Scilit: