Fig. 3
From: Variability in lutetium-177 SPECT quantification between different state-of-the-art SPECT/CT systems
Recovery coefficient as a function of sphere diameter for all systems separately (a–e) and for all systems combined (f), for data reconstructed with a vendor-specific algorithm. Median and range of three repetitive measurements per system. a Discovery NM/CT 670 Pro. b Symbia Intevo Bold with xSPECT Quant. c Symbia Intevo Bold with Broad Quantification. d Symbia T16 system 1. e Symbia T16 system 2. f Mean and standard deviation. All data were fitted with a 3-parameter logistic function (dashed line: 95% CI), for the combined data (f) also the 95% prediction interval is indicated (dashed area)