RT Journal Article SR Electronic T1 Measurement of Flow through Branched Systems Using External Radiation Detectors JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 525 OP 531 VO 10 IS 8 A1 Thompson, Stephen W. YR 1969 UL http://jnm.snmjournals.org/content/10/8/525.abstract AB