目的 探讨MRI在艾滋病继发弓形虫脑病诊断中的应用价值。方法 回顾性分析经临床治疗确诊的6例艾滋病继发弓形 虫脑病患者的影像资料，并结合文献复习。结果 6例患者病灶均为多发，病变侵犯基底节区4例，额颞顶枕叶皮髓 质交界2例，侵犯丘脑1例，侵犯小脑半球1例；T1加权像呈低信号，T2加权像呈高信号，信号不均匀；增强扫描， 多种强化形式并存。结论 艾滋病继发弓形虫脑病的MRI表现具有特征性，对其诊断有较高的应用价值。

Objective To investigate the diagnosis value of MRI on ADIS complicated by brain toxoplasma infection .Materials and Methods The MRI imaging date of 6 patients with clinical proved ADIS complicated by brain toxoplasma infection were analyzed retrospectively. Results 6 patients had multiple lesions, 4 patients had lesion on violating basal ganglia, 4 patients had lesion violating frontotemporoparietal occipital lobe cortical and medullary junction and 1 patients had lesion violating cerebellar hemisphere ,1 patient had lesion violating thalamus. 16 patients with MRI examinations showed hypointensity signal on T1WI and hyperintensity singnal on T2WI. Enhanced scan showed that 6 patients had multiple lesion forms. Conclusions ADIS complicated by brain toxoplasma infection has characteristic MR imaging findings, which has an important role in diagnosis of ADIS complicated by brain toxoplasma infection.