Premium
Absolute quantitation of radioactivity using the buildup factor
Author(s) -
Wu Raymond K.,
Siegel Jeffry A.
Publication year - 1984
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.595486
Subject(s) - collimator , imaging phantom , window (computing) , dosimetry , optics , nuclear medicine , physics , computer science , medicine , operating system
A quantitation scheme for absolute activity measurements with the gamma camera is presented. The technique relies on the use of a set of derived buildup factors to correct for the effects of scatter. Only anterior and posterior view count rates of the region of interest are required for quantitation. The buildup factors are reported for various depths for two different source sizes using the parallel‐hole collimator with a specific window setting. Phantom studies have shown that the method provides less than 5% error for activity determinations at all investigated depths.