目的 比较MRI与乳腺X线钼靶在 鉴别诊断乳腺良恶性病灶中的应用价值。 方法 回顾性分析2013年5月-2015年5月 我院收治且经病理诊断确诊为乳腺肿瘤的 78例患者的临床资料，其中良性乳腺肿 瘤34例，恶性44例，所有患者入院后均 已接受乳腺数字化钼靶及MRI检查，分析 MRI及钼靶在乳腺良恶性病灶鉴别诊断中 的应用价值。结果 78例乳腺病变乳腺钼 靶患者检出良性30例，恶性48例，其诊断 良恶性乳腺病变敏感性、特异性及准确性 分别为80.0%、79.2%、79.5%；MRI检出良 性病变34例，恶性病变44例，诊断良恶性 乳腺病变敏感性、特异性及准确性分别为 88.2%、91.7%、89.7%。结论 在乳腺良 恶性病变鉴别诊断中，MRI敏感性、特异 性、准确性均高于钼靶。乳腺钼靶在诊断 乳腺微小钙化灶方面有其优势，但MRI动 态增强扫描可清晰显示乳腺软组织结构、 性状、边缘、血管强化特点及早期强化特 征，提高良恶性病变的检出率。

Objective To compare the application value of MRI and molybdenum target mammography in the differential diagnosis of benign and malignant breast lesions. Methods The clinical data of 78 patients with breast tumors confirmed by pathology treated in our hospital from May 2013 to May 2015 were analyzed retrospectively. Among them, 34 cases were with benign breast tumors and 44 cases with malignant ones. All patients received breast digital molybdenum target mammography and MRI examination after admission. The application value of MRI and molybdenum target mammography in the differential diagnosis of benign and malignant breast lesions was analyzed. Results Among the 78 cases of breast lesions, 30 cases of benign and 48 cases of malignant breast lesions were detected by molybdenum target mammography. The sensitivity, specificity and accuracy of it in the diagnosis of benign and malignant breast lesions were 80.0%, 79.2% and 79.5% respectively; MRI detected 34 cases of benign lesions and 44 cases of malignant lesions. The sensitivity, specificity and accuracy of MRI the diagnosis of benign and malignant breast lesions were 88.2%, 91.7% and 89.7% respectively. Conclusion The sensitivity, specificity and accuracy of MRI are higher than those of molybdenum target in the differential diagnosis of benign and malignant breast lesions. Breast molybdenum target mammography has its advantages in the diagnosis of small calcification but the MRI dynamic enhanced scan can clearly show the structure, character, edge, enhancement features of blood vessel and early enhancement features of breast soft tissues and improve the detection rate of benign and malignant lesions.