多层螺旋CT的动态增强扫描对胸部孤立性结节的诊断价值  

The Diagnostic value of dynamic enhanced multi-slice spiral CT in solitary pulmonary nodules

作　　者：陈瑜凤[1] 夏淦林[1] 冯峰[1] 施冬辉[1] 

机构地区：[1]南通市肿瘤医院CT室,江苏南通226361

出　　处：《南京医科大学学报（自然科学版）》2008年第10期1328-1331,共4页Journal of Nanjing Medical University(Natural Sciences)

摘　　要：目的:研究多层螺旋CT(MSCT)动态增强扫描对胸部孤立性结节(SPN)的定性价值。方法:对40例胸部结节(其中恶性结节25例,炎性结节8例,良性结节7例)先平扫确定结节范围。以5ml/s和3ml/s两种速率分别在结节中心层面行CT动态增强扫描,记录SPN增强前后的CT值、强化峰值(PH)和峰值时间(PT),结果:恶性结节以中等强化为主,净增值80%(20/25)在20～60Hu之间,20%(5/25)>60Hu或<20Hu。增强峰值和峰值时间分别为(31.31±10.62)Hu、45s。时间-密度曲线(T-DC)呈缓慢升高型;炎性结节呈重度强化为主,净增值均>40Hu。增强峰值(49.25±12.44)Hu,峰值时间为80s和140s。曲线中出现上升后下降又上升的特点。结论:多层螺旋CT动态增强扫描反映胸部结节血流的动力学特性,可无创性评价和诊断SPN。Objective：To evaluate the clinical value of dynamic enhanced multi-slice spiral computed tomography（MSCT） in solitary pulmonary nodules （SPN）. Methods：40 SPN （25 malignant nodules, 8 inflammatory nodules, and 7 benign nodules） were scanned firstly to determine the nodules range and then scanned through the center of them after contrast media were performed with 5 ml/s or 3 ml/s. The pre-and post-contrast density, peak height after enhanced （PH） and peak time （PT） of SPN were recorded. Results： Moderate enhancement appeared mostly in lung carcinoma and the increased CT density varied from 20 to 60 Hu in 20/25 cases （80%）. Peak height of lung cancer was （31.31±10.62）Hu, peak time was 45 s, and the time-density curve represent slowly uptrend. Marked enhancement appeared mostly in inflammatory nodules, and the increased CT density was morn than 40 Hu. Peak height of inflammatory nodules was （49.25 ± 12.44）Hu, and peak time was 80 and 140 s. The curve＇s trend of enhancement was wavy. Conclusion： Dynamic contrast enhanced CT can reflect the hemodynamic characteristic of SPN and be used non-invasively in the evaluation of solitary pulmonary nodules.

关 键 词：孤立性肺结节 动态对比增强 CT 

分 类 号：R816.4[医药卫生—放射医学]