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目的：探讨颅内黑色素瘤ＣＴ、ＭＲ影像特征及其诊断。材料和方法：７例颅内黑色素瘤患者中男４例，女３例，年龄１０～５９岁。５例皮肤有黑色素瘤，２例有颅内黑色素瘤切除史。２例行ＣＴ加ＭＲＩ，４例单行ＭＲ，１例仅行ＣＴ检查。结果：３例ＣＴ平扫均为高密度影，形态不规则。增强扫描肿瘤明显增强。６例ＭＲＩＴ１ＷＩ肿瘤均表现为高信号，其中５例Ｔ２ＷＩ低信号，１例低高信号。Ｔ１ＷＩ增强扫描６例不规则增强。结论：颅内黑色素性黑色素瘤ＭＲＩ具有特征性表现，而非黑色素性黑色素瘤不具特征性，ＭＲＩ显示黑色素瘤累及脑实质及浸润脑膜的范围和定性诊断优于ＣＴ。
Objective: To investigate the features and diagnosis of intracranial melanoma CT and MR imaging. Materials and Methods: There were 4 males and 3 females in 7 cases of intracranial melanoma, aged from 10 to 59 years old. 5 cases of skin melanoma, 2 cases of intracranial melanoma resection history. 2 cases of CT plus MRI, 4 cases of single-line MR, 1 case only CT examination. Results: Three cases of CT scan are high density, irregular shape. Enhanced scan of the tumor was significantly enhanced. 6 cases of MRIT1WI tumors showed high signal, of which 5 cases of T2WI low signal, 1 case of low signal. T1WI enhanced scan irregular enhancement in 6 cases. CONCLUSION: MRI of intracranial melanoma has a characteristic appearance, but non-melanoma is characteristic of non-melanoma. MRI shows that meningiomas involve in the range of brain parenchyma and infiltration of meninges better than CT.