Table 3 MRI findings of ovary torsion, correct diagnosis number (%) and diagnostic performances of DWI
MRI findings | Patient number | HIa | NHIb | ||
Torsed side | Right | 17 (58.6%) | 13 (76.4%) | 4 (23.5%) | |
Left | 12 (41.4%) | 7 (58.3%) | 5 (41.6%) | ||
Twisted pedicle sign | 20 (68.9%) | 12 (%60) | 8 (40%) | ||
Fallopian tube thickening | 28 (96.5%) | 18 (64.2) | 10 (35.7%) | ||
Uterine deviation | 14 (48.2%) | 9 (64.2%) | 5 (35.7%) | ||
Periferally deplased follicles | 18 (62.1%) | 8 (44.4%) | 10 (55.5%) | ||
Free peritoneal fluid | 27 (93.1%) | 19 (70.3%) | 8 (29.6%) | ||
Hemoperitoneum | 11 (37.9%) | 11 (100%) | – | ||
Diagnosis | Patient number | cMRIc | cMRI and DWId | P Value | |
Ovarian torsion | 29 | 27 (93.1%) | 28 (96.5%) | 0.069 | |
Haemorrhagic infarction | 15 | 9 (60.0%) | 14 (93.3%) | <0.001 | |
Hemoperitoneum | 13 | 8 (61.5%) | 11 (84.6%) | <0.001 | |
DWI performances | Ovarian torsion (total) | HI | NHI | ||
AUCe | 0.975 | 0.886 | 1.000 | ||
Cutoff level ADCf | 2.23 | 1.27 | 2.14 | ||
Sensitivity (%) | 96.5 | 93.3 | 100.0 | ||
Specificity (%) | 100.0 | 85.7 | 100.0 | ||
PPVg (%) | 100.0 | 87.5 | 100.0 | ||
NPVh (%) | 96.7 | 92.3 | 100.0 | ||
Accuracy (%) | 96.5 | 89.6 | 100.0 | ||