Table 2. Interobserver variability in assigning ¹⁸F-FDG-avid lesions to an anatomical territory using ¹⁸F-FDG PET alone and ¹⁸F-FDG PET/CT.

	Confidence score for anatomical localisation of lesions	No. of FDG-avid lesions with each score/total no. of FDG-avid lesions
		18F-FDG PET alone	18F-FDG PET/CT
Observer 1	1	6/21	2/21
	2	5/21	1/21
	3	10/21	18/21
Observer 2	1	2/21	0/21
	2	4/21	4/21
	3	15/21	17/21
Observer 3	1	1/21	0/21
	2	3/21	2/21
	3	17/21	19/21

¹⁸F-FDG PET=2-[fluorine-18]fluoro-2-deoxy-D-glucose; CT=computed tomography.