颈部CT扫描标志着喉科学一大进展,这是因CT可显示高对比分辨率的喉三维图象,能提供间接或直接喉镜及X线片或干板照片所不能提供的信息,诸如肿物的大小、范围、会厌前间隙和喉旁间隙及甲状软骨、环状软骨受侵等情况。喉镜检查能观察喉部的表面,但对深部了解不够确切,对深部组织是否已被肿物侵犯也只能靠喉功能改变来推断,而CT扫描 The CT scan of the neck marks a major advance in laryngology because CT can display high-resolution three-dimensional images of the larynx and can provide information that indirect or direct laryngoscopy and X-ray or dry-film photographs cannot provide, such as The size, extent of the mass, the pre-epiglottic space, and the parapharyngeal space, as well as the thyroid cartilage and cricoid cartilage invasion. Laryngoscopy can observe the surface of the larynx, but the understanding of the deep part is not definitive, and whether the deep tissue has been invaded by a tumor can only be inferred by a change in laryngeal function. CT scan