喉平片及体层可以明确肿瘤的大致位置，大小和范围，但难以确定喉周间隙，会厌前间隙及喉软骨是否受侵，对较小病变几乎难以显示。喉镜检查也不能确定喉周侵犯程度。而ＣＴ扫描可以达到这一目的，满足临床要求。笔者对５６例喉癌的ＣＴ表现进行分析，报告如下。１材料和方法１ Laryngeal plain film and the body can be clear about the approximate location of the tumor, size and range, but difficult to determine the laryngeal space, epiglottic space and laryngeal cartilage invasion, the lesion is almost difficult to show. Laryngoscopy can not determine the degree of invasion of the throat. The CT scan can achieve this goal, to meet clinical requirements. The author of 56 cases of laryngeal CT performance analysis, the report is as follows. 1 Materials and methods 1