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目的探讨MSCT (多层螺旋CT)超薄层扫描和后处理技术在异位阑尾炎诊断中的临床价值。方法18例异位阑尾炎患者行MSCT，并经计算机后处理工作站行多平面重组(Multiplanar reconstruction,MPR)、曲面重组(Curved planar reformation,CPR)，回顾性分析其类型，对异位阑尾炎CT表现进行分析、总结，并与手术及病理结果对照。结果18例患者中高位肝下阑尾5例，低位阑尾7例，盲肠后腹膜外阑尾(腰部阑尾)2例，左下腹位阑尾4例。结论 MSCT超薄层扫描及后处理技术可以多方位显示异位阑尾解剖关系及病变周边情况，提高对异位阑尾炎术前诊断准确率。“,”Objective To evaluate the clinical value of Multi-slice spiral CT (MSCT) in the diagnosis of Heterotopia Appendicitis. Methods 18 patients with Heterotopia Appendicitis underwent preoperative contrast-enhanced MSCT.Images were transfer ed to the workstation and then processed with multiplanar reconstruction (MPR),curved planar reformation (CPR).CT manifestations were analysed and compared with surgical and pathological findings. Results 18 patients with Heterotopia Appendicitis , 5 have under liver high Appendix ,and 7 have low Appendix, 2 for waist Appendix, and 4 for the bot om left of abdomen Appendix. Conclusion MSCT and MPR/CPR can provide an advantage of showing the appendix multi-directional y that can improve the diagnosis accuracy of Heterotopia Appendicitis .