Prospective Analysis of ¹⁸F-FDG PET/CT Predictive Value in Patients with Low Rectal Cancer Treated with Neoadjuvant Chemoradiotherapy and Conservative Surgery

Table 6

¹⁸F-FDG PET/CT cut-off values for TRG and (y)pTNM response criteria.

Variables	nCRT response criteria	Cut-off	Sensitivity (%)	Specificity (%)
SUVmax2	TRG	>6.5	66.7	73.9
	(y)pTNM	>4.3	79.5	66.7
SUVmean2	TRG	>2.0	78.8	60.9
	(y)pTNM	>2.0	72.7	75
RImax	TRG	≤78.3	93.9	34.8
	(y)pTNM	≤65.1	68.2	75
RImean	TRG	≤74	84.9	52.2
	(y)pTNM	≤74	79.5	66.7

Cut-off values individuated by ROC curve analysis.