DWI-MR与增强CT在老年中央型肺癌合并肺不张组织中的显影效果

发布时间：2018-07-15 12:04

【摘要】：目的探讨磁共振弥散加权成像(DWI-MR)与增强CT在老年中央型肺癌合并肺不张组织中的显影效果。方法收集53例中央型肺癌合并肺不张患者的临床资料,分析DWI-MR与增强CT下肺癌及肺不张组织影像学特点。结果增强CT、T1WI、T2WI、DWI、T2WI+DWI下分别有23例、11例、28例、42例、48例中央型肺癌与肺不张组织可鉴别,T2WI+DWI鉴别能力最高,其次为DWI,高于增强CT鉴别能力,T2WI+DWI鉴别能力高于DWI(P0.05);DWI图像信号强度比(SIR)及噪声比(CNR)均高于T2WI图像(P0.05);DWI图像下肺癌组织(ADC)值低于肺不张组织,信号强度高于肺不张组织(P0.05)。结论 DWI-MR对老年中央型肺癌合并肺不张患者两种组织的显影效果明显优于增强CT,可通过图像边界、信号强度及ADC值等对两种组织进行鉴别,DWI-MR联合T2WI可进一步提高老年中央型肺癌与肺不张组织的鉴别能力。
[Abstract]:Objective to evaluate the effect of diffusion-weighted magnetic resonance imaging (DWI-MR) and enhanced CT in elderly patients with central lung cancer complicated with atelectasis. Methods the clinical data of 53 patients with central lung cancer complicated with atelectasis were collected and the imaging features of lung cancer and atelectasis under DWI-Mr and enhanced CT were analyzed. Results on T2WI, there were 23 cases of T2WI with T2WI and 42 cases with central lung cancer and 48 cases with central lung cancer and atelectasis. The ability of differentiating from central lung cancer and atelectasis on DWI was the highest. The second was DWI. The differential ability of DWI on T2WI was higher than that on DWI (P0.05). The signal intensity ratio (Sir) and noise ratio (CNR) of DWI were higher than those on T2WI (P0.05). The ADC value of lung cancer was lower than that of atelectasis on DWI (P0.05), and the signal intensity was higher than that of atelectasis (P0.05). Conclusion DWI-MR is superior to enhanced CT in the development of two kinds of tissues in elderly patients with central lung cancer complicated with atelectasis. DWI-MR combined with T2WI can further improve the ability of differentiating central lung cancer from atelectasis.
【作者单位】：锦州医科大学附属第三医院放射科;锦州医科大学附属第三医院呼吸科;锦州医科大学附属第三医院肿瘤科;
【基金】：辽宁省自然科学基金(联合基金)资助项目(No.2013022004)
【分类号】：R445.2;R730.44;R734.2

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