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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