目的探讨MSCT多平面重建对急 性阑尾炎的诊断价值。方法 回顾性分析 50例临床诊断急性阑尾炎患者的临床资 料、薄层CT图像及多平面重建图像，全 部病例均手术及病理证实。结果 CT确 诊急性阑尾炎38例，主要表现阑尾增粗 （>6mm）,管壁增厚（>2mm），阑尾周围 炎、脓肿，腔内外积气、粪石等；误诊或 漏诊12例，包括5例急性阑尾炎和其他急 腹症病变。结论 急性阑尾炎是临床上常 见、不可忽视的急腹症之一，MSCT多平面 重建图像能更好显示阑尾位置及其病变情 况，对鉴别其他急腹症、术前定位、决定 手术方式有重要意义。

Objective To investigate the value of multislice spiral CT (MSCT) in the diagnosis of acute appendicitis with multi-planar reformation technique. Methods Retrospectively analyzed the data of 50 acute appendicitis patients who were diagnosed with clinical data, thin layer CT images and multi-planar reformation images, and confirmed with operation and pathology. Results 38 of 50 cases were definitely diagnosed of acute appendicitis with CT imag es. The main performance in CT of these patients were as follow: enlarged appendix(>6mm), thickened wall (>2mm), periappendicitis, abscess, appendiceal pneumatosis and fecalith (inside or outside). 12 of 50 cases were missed or misdiagnosed, including 5 of acute appendicitis and the rest of other acute abdominal disease. Conclusion Acute appendicitis is one of the common acute abdomen diseases and should take into account. MSCT with multi-planar reformation can have a better location and display of the appendix, which will h elp to differentiate the other acute abdomen diseases, identify the preoperative location and determine the option of operation method.