Accession Number : AD0697388

Title :   MODIFIED METHOD FOR DETERMINING 51CR RED CELL VOLUME.

Descriptive Note : Final rept. Apr-Jun 69,

Corporate Author : SCHOOL OF AEROSPACE MEDICINE BROOKS AFB TEX

Personal Author(s) : Logsdon,Donald F. , Jr. ; Green,James F. ; Harper,John W.

Report Date : OCT 1969

Pagination or Media Count : 12

Abstract : A method is described for reducing the radiation dose by a factor of 10 or greater. Curves are presented which allow selection of a minimal exposure dose or sample size, at counting rates of 2,000 or 400 c.p.m. Twenty-eight days was the minimum time-interval, between repeated chromium-51 red cell volume determinations with a constant microcurie dose of 51Cr, which gives reproducible results. (Author)

Descriptors :   (*RADIATION DOSAGE, REDUCTION), (*TRACER STUDIES, RADIATION DOSAGE), PERMISSIBLE DOSAGE, EXPOSURE(PHYSIOLOGY), RADIOACTIVE ISOTOPES, CHROMIUM, ERYTHROCYTES, VOLUME, MEASUREMENT

Subject Categories : Radiobiology

Distribution Statement : APPROVED FOR PUBLIC RELEASE