EJNMMI Research

Table 1 Mean, median, minimum and maximum values of maximum tumour diameter as obtained with different methods

From: Assessment of tumour size in PET/CT lung cancer studies: PET- and CT-based methods compared to pathology

Method	Maximum diameter (mm)
Method	Mean	Median	Min	Max	p-value ^a
Pathology	40.0	35.0	15.0	70.0	-
CT	48.1	38.8	17.3	137.0	0.002
PET
VOI⁵⁰	39.4^b	35.6	15.5	333.6	0.984
VOI⁷⁰	30.9	24.1	11.3	71.4	<0.001
VOI^A41	41.3^b	37.0	15.5	330.6	0.623
VOI^A50	37.2	30.3	12.5	92.0	0.104
VOI^A70	26.6	22.5	10.6	62.3	<0.001
VOI^Schaefer	41.7^b	38.3	15.5	333.6	0.568
VOI^RTL	37.9	33.8	10.6	92.8	0.113
Grad^WT1	50.0^b	48.8	32.5	83.2	0.003
Grad^WT2	36.2	32.3	19.5	79.0	0.156
SUV^2.5	44.3^b	54.8	12.5	643.4	0.009

^aSignificance of the difference between tumour delineation method and pathology.
^bWithout outliers (2 for VOI⁵⁰, VOI^A41, VOI^Schaefer and Grad^WT1, 5 for SUV^2.5).

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