患者女,22岁,无明显诱因出现说话不清3天,未治疗,遂于本院就诊,行头部MRI平扫、增强及磁共振波谱(MRS)扫描。左侧额叶可见团片状长T1信号(图1),稍混杂T_2信号(图2、3),T_2WI局部放大示短T_2信号(图3白箭),FLAIR序列呈稍高信号(图4),周围可见片状长T_2水肿信号,DWI高b值(1000 s/mm~2)可见环状或片状扩散受限呈高信号(图5),ADC图呈低信号。静注钆喷酸葡胺注射 Female, 22 years old, without apparent incentive to speak for 3 days without treatment, then treated in our hospital, head MRI scan, enhanced and magnetic resonance spectroscopy (MRS) scan. The left frontal lobe showed long patchy T1 signal (Figure 1), slightly mixed T2 signal (Figure 2, 3), T_2WI local amplification of short T2 signal (Figure 3 white arrow), FLAIR sequence was slightly higher signal (Figure 4 ), There was flaky T 2 edema signal around it. The high b value of DWI (1000 s / mm ~ 2) showed that the annular or platelet diffusion was restricted to high signal (Figure 5). ADC showed low signal. Intravenous injection of gadopentetate dimeglumine injection