Differentiation between pelvic abscesses and pelvic tumors with diffusion-weighted MR imaging: a preliminary study

作者：Chou Chen Pin; Chiou Shih Hwa; Levenson Robin B; Huang Jer Shyung; Yang Tsung Lung; Yu Chia Cheng; Chiang An Jen; Pan Huay Ben^*

来源：Clinical Imaging, 2012, 36(5): 532-538.

DOI：10.1016/j.clinimag.2011.11.018

• Pelvic abscess
• Pelvic cystic malignancy
• Apparent diffusion coefficient
• MRI
• Diffusion-weighted MRI

Purpose: Use diffusion-weighted magnetic resonance imaging (MRI) in differentiating pelvic abscess from pelvic cystic tumor. Materials and methods: Patients with pelvic abscess (n=23) or pelvic cystic tumor (n=15) who underwent diffusion-weighted MRI were reviewed. Results: Pelvic abscesses showed hyperintensity on diffusion-weighted MRI and hypointensity on apparent diffusion coefficient (ADC) map. The mean ADC values of fluid in pelvic abscess and pelvic tumors were 0.73 +/- 0.15x10(-3) and 2.27 +/- 0.45x10(-3) mm(2)/s, respectively. Pelvic abscesses had significantly lower ADC values than pelvic cystic tumors (P%26lt;.001). Conclusion: Diffusion-weighted MRI provides a noncontrast method for interpreting pelvic cystic lesions.

• 出版日期2012-10