Diagnostic Performance of Diffusion-Weighted MRI in the Diagnosis of Ovarian Torsion: Comparison of Torsed and Nonaffected Ovaries

Abstract

Introduction The aim of this study was to evaluate the role of diffusion-weighted magnetic resonance imaging (MRI) in the diagnosis of ovarian torsion. Methods We retrospectively identified 84 patients with surgically confirmed ovarian torsion. Seventeen patients with unclear ultrasound findings underwent MRI examination with two different magnetic resonance (MR) systems. Results In ovarian torsion, the mean apparent diffusion coefficient (ADC) value of the torsed ovary was significantly lower than that of the nonaffected ovary in both MR systems (n = 17; 0.898 ± 0.539 vs. 1.615 ± 0.469 × 10− 3 mm2/s; P < .001). Conclusions ADC comparisons were useful for detecting ovarian torsion. © 2016 Elsevier Inc.