Fig. 5
From: A method to assess image quality for Low-dose PET: analysis of SNR, CNR, bias and image noise
Example of SUV and CNR vs. counts (patient as in Fig. 4): (a) SUVmean in the normal lung (blue), liver (green) and TB lesion (red) at the different count level. b SUVmax in the normal lung (blue), liver (green) and TB lesion (red) at the different count level. c CNR in the lesion at the different count level. The variation over the realizations is demonstrated as the error bar