Department of Radiology, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan, ROC.
Clin Imaging. 2012 Sep-Oct;36(5):532-8. doi: 10.1016/j.clinimag.2011.11.018. Epub 2012 Jun 8.
Use diffusion-weighted magnetic resonance imaging (MRI) in differentiating pelvic abscess from pelvic cystic tumor.
Patients with pelvic abscess (n=23) or pelvic cystic tumor (n=15) who underwent diffusion-weighted MRI were reviewed.
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 ± 0.15 × 10(-3) and 2.27 ± 0.45 × 10(-3) mm(2)/s, respectively. Pelvic abscesses had significantly lower ADC values than pelvic cystic tumors (P<.001).
Diffusion-weighted MRI provides a noncontrast method for interpreting pelvic cystic lesions.
利用弥散加权磁共振成像（MRI）区分盆腔脓肿和盆腔囊性肿瘤。
回顾性分析了 23 例盆腔脓肿和 15 例盆腔囊性肿瘤患者的弥散加权 MRI 资料。
盆腔脓肿在弥散加权 MRI 上呈高信号，在表观弥散系数（ADC）图上呈低信号。盆腔脓肿和盆腔肿瘤内液体的平均 ADC 值分别为 0.73±0.15×10(-3)和 2.27±0.45×10(-3)mm(2)/s。盆腔脓肿的 ADC 值明显低于盆腔囊性肿瘤（P<.001）。
弥散加权 MRI 为解释盆腔囊性病变提供了一种无需对比的方法。
