背景抑制弥散加权成像技术在卵巢实性肿瘤诊断中的应用价值

Role of diffusion-weighted imaging in the diagnosis of the solid ovarian lesions

目的探讨背景抑制弥散加权成像(DWI)在妇科实性肿瘤诊断中的应用价值。方法对2009年12月至2012年12月在我院就诊,经超声检查证实为实性病灶或实性成分为主的卵巢肿瘤46例(30例恶性肿瘤,16例良性肿瘤)行常规核磁共振成像(MRI)及DWIBS检查,评估肿瘤实质部分DWI图(b=800s/mm2)的信号强度及表观弥散系数值(ADC值)。结果 46例患者中,恶性肿瘤常表现为DWI高信号,恶性病变的平均ADC值为(0.763±0.140)×10-3 mm2/s,良性病变的平均ADC值为(0.781±0.310)×10-3 mm2/s,两者间比较无显著性差异。DWI图上,恶性肿瘤的信号强度为(0.891±0.247)mm2/s,良性肿瘤(0.358±0.823)mm2/s,两者间比较有显著性差异。结论 DWI有助于对卵巢实性肿瘤的诊断和鉴别诊断。

Objective To investigate the diagnostic value of diffusion weighted imaging with background sup- pression（DWIBS）in uterus cervical carcinoma. Methods DWI was performed in 46 patients with pathologically proven solid ovarium lesions（30 malignant and 16 benign neoplasms）. The areas of the highest signal intensity on DWI（b= 800 s/mm2）and the lowest ADC values within the lesions were evaluated. Results On DWI, high signal intensity was observed more often in malignant lesions than in benign lesions. The difference between the two groups was significant. There was no significant difference between the ADC values of the malignant and benign le- sions in the ovarian lesions. Conclusion DWI may help to diagnose and differentiate solid ovarian lesions.