孤独症谱系障碍(autism spectrum disorder,ASD)被公认为是一种脑发育异常疾病,主要表现有语言功能缺失、社会交往能力下降、重复刻板的动作与兴趣爱好等。当前对ASD的诊断主要基于这三方面的行为,并没有一种公认可的生物学标记物可提供更科学可靠的标准。脑电图、磁共振成像和正电子断层成像等影像学手段能有效揭示孤 Autism spectrum disorder (autism spectrum disorder, ASD) is recognized as a brain dysplasia, the main manifestations of the lack of language function, social skills decline, repeated rigid movements and hobbies. The current diagnosis of ASD is based on these three aspects of behavior, and there is no universally accepted biomarker to provide more scientific and reliable standards. Electroencephalography, magnetic resonance imaging and positron emission tomography and other imaging methods can effectively reveal the solitary