Fig. 3From: An investigation of the relation between tumor-to-liver ratio (TLR) and tumor-to-blood standard uptake ratio (SUR) in oncological FDG PET a Correlation between the SURtc/TLR ratio and SURtc. b Corresponding frequency distribution. c Correlation between the SURtc/TLRtc ratio and SURtc. d Corresponding frequency distribution. Black lines represent the least squares straight line fits to the data. Red lines depict the 95 % CIBack to article page