Fig. 5From: Tumor dosimetry using 177Lu: influence of background activity, measurement method and reconstruction algorithmContrast and recovery coefficients for all spheres in all phantoms for the QSPECT reconstruction (a, b), the fQSPECT reconstruction (c, d) and the Bayesian reconstruction (e, f). The dashed lines indicate the theoretical contrast values calculated from the sphere-to-background ratios and Eq. (1). The solid lines represent the fit of Eq. (2)Back to article page