PT - JOURNAL ARTICLE AU - Van Damme, K. J. TI - Method to Calculate Activity of a Source from Counting Rates in Single and Coincidence Photopeaks DP - 1977 Oct 01 TA - Journal of Nuclear Medicine PG - 1043--1044 VI - 18 IP - 10 4099 - http://jnm.snmjournals.org/content/18/10/1043.2.short 4100 - http://jnm.snmjournals.org/content/18/10/1043.2.full SO - J Nucl Med1977 Oct 01; 18