Fig. 2From: On the use of solid 133Ba sources as surrogate for liquid 131I in SPECT/CT calibration: a European multi-centre evaluationa 133Ba-cylinder combined average pseudo-ICFs, b 131I cylinder pseudo-ICFs and ICF from the uniformly filled Jaszczak phantom measurement. Note that both data sets are shown in the same y-axis scale. A plot of the individual 133Ba cylinder pseudo-ICFs for the CEA and CMI sources and a table with the numerical values can be found in Additional file 1Back to article page