3.0T MRI动态增强扫描对乳腺微钙化病变的鉴别诊断价值

摘要

目的:探讨3.0T MRI动态增强扫描对乳腺微钙化病变的诊断价值.方法:回顾性分析经病理证实的乳腺X线影像报告和数据系统(BI-RADS)3~5级微钙化病变70例,均行乳腺3.0T MRI动态增强扫描.以病理结果作为金标准,计算2种方法的诊断敏感度和特异度,并进行比较.结果:70例中恶性病灶22例,良性48例.MRI对70例微钙化病灶强化特征进行分级:1级10例,均为良性;2级26例,均为良性;3级10例,良性9例,恶性1例;4级12例,良性3例,恶性9例;5级12例,均为恶性.MRI动态增强扫描与X线摄影对微钙化诊断敏感度差异无统计学意义(P>0.05),特异度差异有统计学意义(P<0.01).结论:MRI动态增强扫描对乳腺微钙化患者的临床进一步处理具有一定的指导意义.%Objective:To investigate the diagnostic value of 3.0 T DCE MRI in patients presenting with microcalcifications on mammography. Methods:70 cases with microcalcifications(BI-RADS category 3~5)who underwent mammography and 3.0 T DCE-MRI were retrospcetively analyzed. With histopathological diagnosis as golden standerd,the sensitivity and specificity of the two image methods were calculated and compared with χ2test. Results:Pathologic examination showed 48 benign lesions and 22 malignant lesions in 70 patients. The difference for specificity between the two methods was statistical significant,but not for sensitivity. Conclusions:DCE-MRI can give recommendations for clinical further treatment to patients with microcalcifications.