比较非增强MRI(TIRM结合DWI)与超声检查在诊断乳腺病变中的临床应用价值

Comparison of non-contrast MRI and ultrasound in differentiating diagnosis of breast lesions

目的比较非增强MRI(TIRM结合DWI)与超声检查在诊断乳腺病变中的临床应用价值,为临床提供较好的一种无创的检查方法。方法选取105个乳腺病灶的常规超声及MRI检查资料,以病理结果为金标准,比较两种影像学检查方法的诊断效能。结果病理结果显示乳腺恶性病变82个,良性病变23个,MRI和超声检查两种诊断方法的敏感性、特异性、阳性预测值、阴性预测值分别为92.68%、82.61%、95.00%、76.00%;81.71%、73.91%、91.78%、53.13%。二者比较敏感性的差异具有统计学意义(P<0.05)。结论非增强MRI(TIRM结合DWI)作为MRI简易诊断手段,其诊断敏感性优于超声检查,适用于体检及不适合增强扫描的患者,有较好的临床应用价值。

Objective To compare the clinical application value ofnon-contrast MRI(Turbo Inversion Recovery Magnitude,TIRM)combined withdiffusion-weighted magnetic resonance imaging,DWI)with ultrasonography in diagnosis of breast lesions so as to provide a reliable diagnostic method for patients.Methods In our study,the ultrasonic and MRI data of a total of 105 lesions were included.Taking the pathologic findings as the golden standard,the diagnostic sensitivity,specificity,positive predictive value and negative predictive value of the two methods were calculated.Results Histopathologic diagnosis revealed 82 malignant and 23 benign lesions.The diagnostic sensitivity,specificity,positive predictive value,and negative predictive value by TIRM-DWI versus ultrasonography were 92.68%vs 81.71%,82.61%vs73.91%,95.00%vs 91.78%,and 76.00%vs 53.13%,correspondingly.The sensitivity of MRI was significantly different from that of ultrasonography.Conclusion As a simple diagnostic method of MRI,non-enhanced MRI(TIRM combined with DWI)has better diagnostic sensitivity than ultrasound,is suitable for physical examination,and patients who are not suitable for enhanced scanning,which has good clinical application value.