The ratio of every right and left ROI radioactivity to the average one of double cerebellum was counted. The abnormal rate of brain imaging was 98.2%. The areas of hypoperfusion were temporal,parietal,occipital.

• 计算机进行图像重建后，取各功能感兴趣区（ROI），作左右ROI与两侧小脑平均放射性强度比值，结果表明患者脑断层显像异常率98.；2%25，主要灌注低下区为颞叶、顶叶、枕叶。