Co-57 ﬂood sources are used for quality control of gamma camera systems.
ERS ﬂood sources are available in rectangular and circular geometry. The replacement period of Co-57 ﬂood sources is typically 2 (two) years depending on the source activity.
Quality control tests of Co-57 ﬂood sources are performed with a gamma camera system by taking count measurements. Each gamma camera scan contains differential and integral non-uniformity parameters according to IEEE/ANSI N 42.27 standard.