目的:探讨CT和MRI对卵巢无性细胞瘤的诊断价值。方法:回顾性分析12例经病理证实的卵巢无性细胞瘤的CT及MRI资料,总结其CT、MRI表现。结果:(1)8例的MRI检查结果示:6例实性肿块,2例囊实性肿块;肿块的实性成为的T1WI呈等或稍低信号,T2WI呈等或稍高信号。(2)7例的CT检查结果示:6例为实性肿块,1例囊实性;动脉期5例呈不均匀轻度强化,2例中度强化,静脉期均持续强化。结论:卵巢无性细胞瘤以实性为主,动脉期呈不均匀轻度至中度强化,静脉期均持续强化,术前可综合CT和MRI平扫结果,为手术方案制定提供依据。 Objective: To investigate the value of CT and MRI in the diagnosis of ovarian dysgerminoma. Methods: The CT and MRI data of 12 cases of pathologically confirmed ovarian dysgerminoma were retrospectively analyzed. Their CT and MRI findings were summarized. Results: (1) 8 cases of MRI examination showed: 6 cases of solid mass, 2 cases of cystic mass; T1WI solid tumors become equal or slightly lower signal, T2WI was equal or slightly higher signal. (2) The results of CT examination in 7 cases showed that 6 cases were solid mass and 1 case was cystic solid. In the arterial phase, 5 cases showed uneven mild enhancement and 2 cases moderate enhancement. The venous phase continued to strengthen. CONCLUSIONS: Ovarian dysgerminoma is characterized by solidity, uneven arterial phase with mild to moderate enhancement, continuous enhancement in venous phase, comprehensive CT and MRI scan before operation, which provides the basis for the development of surgical plans.