Concordance of FDG PET/CT metabolic tumour volume versus DW-MRI functional tumour volume with T2-weighted anatomical tumour volume in cervical cancer

Table 3 Means of the ATV, FTV_{(semi-automated)}, FTV_(manual) and MTV₂₀ to MTV₈₀

	Mean (cm³)	Paired difference with mean ATV (cm³)	(%)	p value
ATV	55.5
FTV_(manual)	44.3	11.2	20.1%	0.001
FTV_{(semi-automated)}	30.5	25.1	45.1%	<0.001
PET MTV₂₀	83.3	−27.8	−50.0%	<0.001
PET MTV₂₅	69.2	−13.7	−24.7%	0.001
PET MTV ₃₀	58.4	−2.9	−5.2%	0.301
PET MTV₃₅	49.0	6.5	11.8%	0.026
PET MTV₄₀	41.4	14.1	25.3%	0.001
PET MTV₄₅	34.9	20.6	37.1%	<0.001
PET MTV₅₀	29.3	26.2	47.2%	<0.001
PET MTV₅₅	24.3	31.2	56.2%	<0.001
PET MTV₆₀	19.4	36.1	65.0%	<0.001
PET MTV₆₅	15.0	40.5	73.0%	<0.001
PET MTV₇₀	11.0	44.5	80.2%	<0.001
PET MTV₇₅	7.3	48.2	86.9%	<0.001
PET MTV₈₀	4.4	51.1	92.1%	<0.001

The differences of their means with ATV. The paired difference of mean between ATV and MTV₃₀ was not statistically significant and was the closest to ATV compared with all other FTVs and MTVs (BOLD)

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