Objective To study the CT and MRI for the diagnosis of ischemic necrosis of femoral head during early adulthood, provide theoretical basis for clinical detection methods. Methods Choose the patients of 65 cases (101 hips), which come to our hospital for treatment between January 2012 to February 2015, all patients were exam-ined by CT and MRI, analysis of CT and MRI diagnostic accuracy of ischemic necrosis of femoral head, and discusses the advantages and disadvantages of two kinds of detection methods. Results The CT detection rate was 87.1%(88/101),stage Ⅰ and Ⅱ detection rate was 75.5% (34/45), stage Ⅲ and Ⅳ detection rate was 96.4% (54/56); The total detection rate of MRI was 96.0%, the stage Ⅰ and Ⅱ detection rate was 93.3% (42/45), stage Ⅲ and Ⅳ detection rate was 98.2%(55/56), two kinds of detection methods were no obvious difference from the correct rate of diagnosing bone ischemia necrosis, the correct rate of MRI about diagnosing bone ischemia necrosis significantly was higher than that of CT from Ⅰ period and Ⅱ options , the difference was statistically significant between groups, (P<0. 05). Con-clusion MRI for the diagnosis of ischemic necrosis of femoral head is higher than that of CT, especially for Ⅰperiod andⅡoptions are ischemic necrosis of bone detection suitable for clinical use.%目的：探讨CT与MRI对成人早期股骨头缺血坏死诊断中的价值，为临床选择检测方法提供理论依据。方法选取2012年1月至2015年2月间来我院接受治疗的股骨头缺血坏死患者65例（101髋）的临床资料，所有患者均接受CT及MRI检查，分析CT与MRI对股骨头缺血坏死诊断的准确性，并探讨2种检测方法的优缺点。结果 CT总检出率为87．1％（88/101），其中Ⅰ期与Ⅱ期检出率为75．5％（34/45），Ⅲ期与Ⅳ期检出率为96．4％（54/56）；MRI总检出率为96．0％，其中Ⅰ期与Ⅱ期检出率为93．3％（42/45），Ⅲ期与Ⅳ期检出率为98．2％（55/56），2种检测方法中CT与MRI对Ⅲ期与Ⅳ期股骨头缺血坏死诊断的准确率无明显差异，MRI对Ⅰ期与Ⅱ期股骨头缺血坏死诊断的准确率明显高于CT，组间差异比较具有统计学意义（P＜0．05）。结论 MRI对股骨头缺血坏死诊断的准确率高于CT，特别是对于Ⅰ期与Ⅱ期股骨头缺血坏死的检测，因此适合临床推广使用。
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