电子计算机体层扫描(简称CT)是一种能鉴别软组织的密度差异,能显示人体横断层图象,特别由于这种检查的无损伤性、低放射量、迅速、安全、可以重复、无痛苦,对肾功能无依赖性,准确性很高的组织形态的检查方法;对深部包块的鉴别诊断,肿瘤的分期,肿瘤治疗前后的观察,远期疗效的随访等,都有很高的实用和参考价值。 Computed tomography (CT) is a technique that can identify differences in the density of soft tissue and can display cross-sectional images of the human body, particularly because of the non-invasive, low-level, rapid, safe, repeatable, and painless nature of this examination. , The examination method of histological morphology without dependency on renal function, high accuracy; Differential diagnosis of deep masses, staging of tumors, observation before and after treatment of tumors, follow-up of long-term therapeutic effects, etc., are highly practical And reference value.