T2 magnetic resonance imaging combined with diffusion-weighted imaging for colon cancer lymph nodes

Table 1 Qualitative diagnosis of the disease

Diagnostic method		Gold standard (n)		Sensitivity (%)	Specificity (%)	Accuracy (%)	Positive predictive value (%)	Negative predictive value (%)
		Malignant	Benign
Magnetic resonance T2WI	Malignant	64	10	84.21	77.27	81.67	86.49	73.91
	Benign	12	34	86.84	75.00	82.50	85.71	76.74
Diffusion-Weighted Imaging	Malignant	66	11
	Benign	10	33	97.37	97.73	97.50	98.67	95.56
Combined	Malignant	74	1
	Benign	2	43
χ2 value				7.824	9.927	17.098	9.042	8.477
P value				0.020	0.007	< 0.001	0.011	0.014

T2WI: T2-weighted imaging.