An overview of differences between the tested AC strategies in three different regions. Outliers were not displayed in the box plots for clarity (ranges are provided in the text). In both the tumour (a) and the lung VOI (b), we found a highly significant SUV increase in EI-AC and a highly significant SUV decrease in EE-AC. In a few samples, where motion was limited, the findings were opposite but within the uncertainty range as illustrated in the muscle data. The average difference in the lungs with the 3D-AC method is the smallest but has the largest spread. In the muscle tissue (c), we found no clear attenuation differences.