目的 比较正电子发射断层显像 (PET/CT)与核磁共振(MRI)诊断乳腺癌的 效果。方法 对2016年1月至2017年1月我 院接诊的62例疑似乳腺癌患者进行PET/ CT与MRI检查，比较PRT/CT与MRI诊断乳 腺癌及乳腺癌腋窝淋巴结转移的灵敏度 (Se)、特异度(Sp)、准确率(Ac)、阳性预 测值(+PV)和阴性预测值(-PV)。结果 本 组62例疑似乳腺癌患者经手术和病理检查 确诊为乳腺癌50例和乳腺良性病变12例， 50例乳腺癌患者中18例存在腋窝淋巴结转 移；PRT/CT诊断乳腺癌Sp、Ac均明显高于 MRI，差异有统计学意义(P＜0.05)；Se、 +PV、-PV均略高于MRI，但差异无统计学 意义(P＞0.05)；PRT/CT与MRI诊断乳腺癌 腋窝淋巴结转移Se和-PV均达100.00%， PRT/CT诊断腋窝淋巴结转移Sp、Ac、 +PV与MRI相似，差异无统计学意义(P＞ 0.05)。结论 PET/CT诊断乳腺癌特异度和 准确率更高，值得临床推荐。

Objective To compare the diagnostic value of PET/CT and MRI in the diagnosis of breast cancer. Methods A total of 62 cases of patients with suspected breast cancer were examined by PET/CT and MRI, the Se, Sp, Ac, +PV, -PV were compared. Results A total of 62 cases of suspected breast cancer were diagnosed as breast cancer in 50 cases and benign breast lesions in 12 cases by operation and pathological examination, with 50 cases of breast cancer in 18 patients with axillary lymph node metastasis. The Sp, Ac by PRT/CT were higher than MRI(P＜0.05). There had no significant difference on the Se, +PV, -PV(P＞0.05). The Se, -PV research on 100.00%, with similarity of Sp, Ac, +PV for the two methods(P＞0.05). Conclusion The specificity and accuracy of PET/CT in diagnosis of breast cancer is higher, which is worthy of clinical recommendation.