Author/Authors :
Noda Yoshifumi نويسنده Department of Radiology, Gifu University Hospital, Gifu University, Gifu, Japan , Goshima Satoshi نويسنده Department of Radiology, Gifu University Hospital, Gifu University, Gifu, Japan , Kawada Hiroshi نويسنده Department of Radiology, Gifu University Hospital, Gifu University, Gifu, Japan , Kawai Nobuyuki نويسنده Department of Radiology, Gifu University Hospital, Gifu University, Gifu, Japan , Koyasu Hiromi نويسنده Department of Radiology, Gifu University Hospital, Gifu University, Gifu, Japan , Matsuo Masayuki نويسنده Department of Radiology, Gifu University Hospital, Gifu University, Gifu, Japan
Abstract :
[Background]Magnetic resonance (MR) imaging, have become more frequently used in the diagnosis of ovarian torsion, particularly in subacute cases.[Objectives]To assess the characteristic findings and diagnostic performance of preoperative MR imaging for ovarian torsion.[Patients and Methods]Twenty-three patients (age range, 10 - 58 years; mean age, 28.4 ± 12.5 years) with suspected ovarian torsion underwent preoperative MR imaging. Fifteen patients exhibited ovarian torsion, whereas the remaining eight did not. Two radiologists evaluated the MR imaging data in relation to six previously-described characteristics associated with ovarian torsion, and the sensitivity, specificity, and accuracy of this approach was determined.[Results]Ovarian enlargement (maximum ovarian diameter > 4.0 cm) and a twisted pedicle were significantly more common findings in patients with ovarian torsion compared with those without (regarding ovarian enlargement, P = 0.032 for both readers and considering twisted pedicle, P = 0.0094 for first reader and P = 0.0013 for second reader). The respective sensitivity, specificity, and accuracy of a twisted pedicle for the diagnosis of ovarian torsion were 73%, 88%, and 78%, respectively for reader 1 and 73%, 100%, and 83%, respectively for reader 2.[Conclusion]Identifying a twisted pedicle in a patient is therefore, suggestive of ovarian torsion.
