多排螺旋CT对恶性孤立性肺结节特征的影像学研究

Imaging characteristics of malignant solitary pulmonary nodule in multirow spiral CT

目的:探讨多排螺旋CT对恶性孤立性肺结节(SPN)的早期诊断价值,确定有价值的评价指标。方法:收集30例SPN患者进行了多排螺旋CT靶平扫及动态增强扫描,图像后处理,分析SPN自身形态,血管、支气管关系,TDC形态及强化幅度,研究其与经手术病理证实的恶性SPN的关系。结果:利用支气管重建技术和血管重建技术可以成功显示其与SPN关系,恶性SPN强化程度多≥20,TDC类型以I型占大多数。结论:多排螺旋CT平扫及动态增强扫描,结合图像后处理方法,能清晰显示SPN自身形态及支气管、血管关系以及强化程度,TDC类型对恶性SPN早期诊断具有重要的价值。

Objective：To investigate the clinical value of multirow spiral CT in the early diagnosis of malignant solitary pulmonary nodule（SPN） and determine the valuable diagnostic indexes.Methods： A total of 30 patients with SPN were examined by multirow spiral CT scan and dynamic enhanced scan.After image post-processing,SPN form,vascular bronchial relations,TDC form,strengthen amplitude were collected and analyzed,and their relationship with malignant SPN comfirmed by pathological observation were investigated.Results： The relationship between SPN and bronchial and blood vessels was clearly shown using bronchial reconstruction and vascular remodeling.The majority of malignant SPN scored higher than 20,and belonged to type I in TDC.Conclusion： Multirow spiral CT scan and dynamic enhanced scan combined with image post-processing can clearly display SPN and it＇s relationship with bronchial and blood vessels.The reinforcement degree and TDC type are very important parameters in the early diagnosis of malignant SPN.