方法：9例志愿者行主动脉弓同层动态增强扫描，利用获得的主动脉弓时间-密度曲线（TDC），寻求触发技术的理论阈值。
Methods:Dynamic CT scan was performed in 9 volunteers, measuring the CT value of the same plane of aortic arch and the theoretical threshold was obtained by the time density curve(TDC).
混合瘤时间密度曲线呈缓升缓降型；
Time density dynamic perfusion curve of the tumor is slow rising and slow descending.
结论结核瘤动态增强CT扫描在强化值、时间一密度曲线及强化形态均有一定特征，可与周围型肺癌及炎性肿块相鉴别。
Conclusion: Tuberculoma can be differentiated from peripheral pulmonary carcinoma or inflammatory mass by the characteristic of maximum enhanced ct value, enhanced pattern and time-attenuation curves.
资料与方法对经手术、病理证实的孤立性肺结节病患者40例，行前瞻性螺旋CT动态增强扫描，分析最大强化值及时间密度曲线。
Materials and Methods 40 patients of pulmonary nodules proved pathologically were performed with dynamic enhanced CT to analyze peak net nodule enhancement and time-attenuation curves.
对实验组支架植入前后造影结果进行分析，拟合动脉瘤内时间-密度曲线。
The results of angiography before and after the stent implantation were compared and analyzed in experimental group, and then a time-density curve inside the aneurysm was fitted.
依据时间-密度曲线，确诊血管性病变如动脉瘤、血管瘤或血管畸形，并将它们与颅内肿瘤鉴别。
Vascular disorders such as aneurysm, angioma or arteriovenous malformation can be detected and differentiated from intracranial tumors or granuloma based on typical time-density curves;
依据时间-密度曲线，确诊血管性病变如动脉瘤、血管瘤或血管畸形，并将它们与颅内肿瘤鉴别。
Vascular disorders such as aneurysm, angioma or arteriovenous malformation can be detected and differentiated from intracranial tumors or granuloma based on typical time-density curves;
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