肺结核瘤的磁共振诊断价值研究

Value of MRI in diagnosis of pulmonary tumors

目的探讨肺结核瘤的磁共振诊断价值。方法对病理证实的10例肺结核瘤行磁共振成像(MRI)平扫、磁共振扩散加权成像(DWI)和动态增强扫描的影像特点进行分析,并测量分析病变的表观弥散系数值(ADC)值。结果肺部结核瘤全部病例T1WI显示低信号,T2WI显示8例为周边高信号,中央区低信号;2例为高信号。DWI图像显示均为高信号或稍高信号,平均ADC值为(1.60±0.18)s/mm2。动态增强扫描动脉期全部病例边缘环状强化,中央区无强化或轻度强化。时间-强度曲线6例表现为缓慢爬升型,4例表现为缓慢下降型。结论磁共振平扫、DWI及ADC值结合磁共振动态增强扫描在肺部结核瘤诊断中具有重要价值,具有一定的特征性。

Objective To evaluate the diagnostic value of MRI of tuberculosis tumor. Methods Ten patients with pathologically confirmed pulmonary tuberculosis tumor MRI scan, and dynamic contrast-enhanced imaging features DWI scans were analyzed and measured analysis of the lesion ADC value. Results All cases of pulmonary tuberculosis tumor showed low signal T1 WI, T2 WI showed eight cases for the surrounding high signal, low signal the central area, two cases of high signal. DWI image showed high signal or were slightly higher signal, mean ADC value of（1.60±0.18）s/mm2. Dynamic contrast-enhanced scans all cases the edge ring enhancement in the arterial phase,the central area without enhancement or mild enhancement. Time-intensity curve 6 cases showed slow climb type, four cases showed a slow decline type. Conclusion MRI scan, DWI and ADC value combines dynamic contrast enhanced MRI of great value in the diagnosis of pulmonary tuberculosis, tumors, have certain characteristics.