Table 4.

Correlation of MTVs at all SUVmax thresholds were significantly correlated with T2W anatomical volume and with DW-MRI functional volume (p < 0.05)

	Pearson’s product-moment correlation (r)	p value
ATV	1.000
FTV(manual)	0.963	<0.001
FTV(semi-automated)	0.956	<0.001
PET MTV20	0.955	<0.001
PET MTV25	0.962	<0.001
PET MTV30	0.968	<0.001
PET MTV35	0.975	<0.001
PET MTV40	0.968	<0.001
PET MTV45	0.948	<0.001
PET MTV50	0.921	<0.001
PET MTV55	0.877	<0.001
PET MTV60	0.830	<0.001
PET MTV65	0.803	<0.001
PET MTV70	0.777	<0.001
PET MTV75	0.777	<0.001
PET MTV80	0.781	<0.001

Pearson correlation coefficient (r) larger than 0.9 are highlighted in bold. ATV: anatomical tumour volume; FTV: functional tumour volume; MTV: metabolic tumour volume