目的探讨MRI扫描对卵巢纤维瘤 的诊断价值。方法 回顾性分析15例经病 理证实的卵巢纤维瘤患者的临床资料和 MRI检查资料。结果 15例均为单发病灶， 边缘清楚、光滑，呈类圆形8例、卵圆形 6例、分叶状1例，病灶平均(6.9±2.5) cm，11例直径≥6cm，4例＜6cm；11例为 实性肿块，其中4例信号均匀，T1WI呈等 信号，T2WI呈略低信号；7例直径较大的 肿瘤平扫信号不均，以稍长T1、短T2信号 为主，内部可见散在的斑片状长T1WI、长 TWI2水肿信号区；4例为囊实性肿块，囊 壁及内部实性部分T1WI呈等信号，T2WI呈 略低信号，囊壁较厚且不均匀，内壁较光 滑，无壁结节，囊性部分呈长T1WI、长 T2WI水样信号。增强扫描实性肿块、囊实 性肿块的实性部分及囊壁呈均匀的轻度或 中度延迟强化，信号强度缓慢上升、持续 强化，强化程度弱于子宫肌层，囊性部分 无强化。结论 卵巢纤维瘤影像学表现有 一定的特征性，MRI扫描可清晰显示病变 特点，在卵巢纤维瘤术前诊断中具有重要价值。

Objective To investigate the value of MRI in the diagnosis of ovarian fibroma. Methods The clinical data and MRI findings of 15 patients with ovarian fibroma confirmed by histopathology were analyzed retrospectively. Results All 15 cases had single lesion with well defined smooth margins. Lesions of 8 cases were round, 6 cases were orbicular-ovate, and 1 case was lobulated. Lesions were (6.9±2.5) cm on average. The diameter of 11 cases≥6cm, and 4 cases<6cm; Lesions of 11 cases were solid, of which 4 cases were homogeneous signal (equisignal on T1WI and slightly low signal on T2WI); 7 cases with larger diameter showed unhomogeneous (slightly high signal on T1WI and high signal on T2WI signal, and patchy long signal on T1WI and long edema signal on T2WI inside); 4 cases showed cystic-solid mixed masses (cystic wall and solid part showed equisignalon T1WI and slightly low signal on T2WI), and the wall of cyst was thick and uneven, but the inner wall was smooth without mural nodules; the cystic part showed low signal on T1WI and high signal on T2WI. The solid masses, the solid part and cystic wall of solid-solid masses showed homogeneous mild or moderate delayed enhancement, and the signal intensity increased slowly. The degree of enhancement was weaker than that of the myometrium. The cystic part showed unenhancement. Conclusions The imaging manifestations of ovarian fibroma show certain characteristics. MRI can show lesions' characteristics clearly, and it has important value in preoperative diagnosis of ovarian fibroma.