Fig. 6From: Tumor dosimetry using 177Lu: influence of background activity, measurement method and reconstruction algorithmMean to actual concentration in the spherical VOIs vs. sphere diameter for the QSPECT reconstruction (a), the fQSPECT reconstruction (b) and the Bayesian reconstruction (c). Solid, open and open symbols with a dot represent ø10, ø15 and ø20 VOIs, respectively. They have been displaced horizontally for clarity. The dashed lines indicate a ratio of unityBack to article page