Fig. 3From: Optimisation of CT protocols in PET-CT across different scanner models using different automatic exposure control methods and iterative reconstruction algorithmsExample matched patient images. a Patient (BMI 23.8) scanned with the GE reference protocol; CTDIvol = 2.75 mGy, liver ROI standard deviation = 19.7. b Patient (BMI 23.8) scanned on the Siemens scanner; CTDIvol = 2.06 mGy, liver ROI standard deviation = 23.8. The red circles show the regions of interest used for the noise quantificationBack to article page