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Table 4 Indicators of MRI T stage, thickness, maximum area and volume for differentiating T1a-T1b from T2 stage GC lesions

From: Differentiating T1a–T1b from T2 in gastric cancer lesions with three different measurement approaches based on contrast-enhanced T1W imaging at 3.0 T

 

MRI T stage

Thickness (mm)

Maximum area (mm2)

Volume (mm3)

AUC

0.807 (0.713,0.881)

0.926 (0.853,0.969)*

0.902 (0.823,0.954)*

0.897 (0.818,0.950)*

Optimal cut off

NA

4.725

132.625

1343.850

Sensitivity

0.846 (33/39)

0.872 (34/39)

0.846 (33/39)

0.821 (32/39)

Specificity

0.768 (43/56)

0.929 (52/56)

0.839 (47/56)

0.857 (48/56)

Accuracy

0.800 (76/95)

0.905 (86/95)

0.842 (80/95)

0.842 (80/95)

PPV(%)

0.717 (33/46)

0.895 (34/38)

0.786 (33/42)

0.800 (32/40)

NPV(%)

0.878 (43/49)

0.912 (52/57)

0.887(47/53)

0.873 (48/55)

PLR

3.645

12.205

5.265

5.744

NLR

0.200

0.138

0.183

0.209

P value*

NA

0.004

0.034

0.041

  1. *Compared to MRI T stage, respectively by the Delong test