Cross-modality PET/CT and contrast-enhanced CT imaging for pancreatic cancer

Table 2 Performances of contrast-enhanced computed tomography, positron emission tomography/computed tomography, and positron emission tomography/contrast-enhanced computed tomography fusion images in diagnosing malignant pancreatic tumors

	SEN	SPE	PPV	NPV	ACC	Kappa
CECT	82.0%	65.0%	85.4%	59.1%	77.1%	0.456
PET/CT	92.0%	65.0%	86.8%	76.5%	84.2%	0.597
PET/CECT	96.0%	90.0%	96.0%	90.0%	94.3%	0.860
PET/CT vs CECT	χ2 = 2.210	χ2 = 0.000	χ2 = 0.04	χ2 = 1.303	χ2 = 1.147
	P = 0.137	P = 1.000	P = 1.303	P = 0.254	P = 0.284
PET/CECT vs PET/CT	χ2 = 0.709	χ2 = 3.584	χ2 = 2.735	χ2 = 1.238	χ2 = 3.659
	P = 0.400	P = 0.058	P = 0.098	P = 0.266	P = 0.056
PET/CECT vs CECT	χ2 = 5.005	χ2 = 3.584	χ2 = 3.289	χ2 = 5.177	χ2 = 8.400
	P = 0.025	P = 0.580	P = 0.070	P = 0.023*	P = 0.004

PET/CECT: PET/CECT fusion imagine; SEN: Sensibility; SPE: Specificity; PPV: Positive predictive value; NPV: Negative predictive value; ACC: Accuracy.