Retrospective Study
Copyright ©The Author(s) 2018.
World J Gastroenterol. Feb 28, 2018; 24(8): 929-940
Published online Feb 28, 2018. doi: 10.3748/wjg.v24.i8.929
Table 2 Diagnostic value of intravoxel incoherent motion diffusion-weighted imaging and conventional diffusion-weighted imaging parameters in differentiating the low-grade group (G1) from the high-grade groups (G2 and G3)
ParameterObserverAUC (95%CI)Optimal cutoff valueYouden indexSensitivity (%)Specificity (%)Accuracy (%)
ADCR10.843 (0.718, 0.968)1.2850.61978.6(11/14)83.3(40/48)82.3(51/62)
R20.852 (0.730, 0.974)1.2750.64985.7(12/14)79.2(38/48)80.6(50/62)
DR10.909 (0.834, 0.985)0.9620.74192.9(13/14)81.3(39/48)83.9(52/62)
R20.911 (0.832, 0.990)0.9770.80492.9(13/14)87.5(42/48)88.7(55/62)
D*R10.632 (0.489, 0.776)17.750.37885.7(12/14)52.1(25/48)59.7(37/62)
R20.636 (0.495, 0.777)17.900.37885.7(12/14)52.1(25/48)59.7(37/62)
fR10.523 (0.348, 0.698)0.2160.18278.6(11/14)39.6(19/48)48.4(30/62)
R20.518 (0.332, 0.704)0.2460.17371.4(10/14)45.8(22/48)51.6(32/62)