本文通过总结螺旋CT灌注成像的原理和技术要求,评价其在肺部肿瘤影像诊断中所提供的肿瘤微循环状况、血流动力学变化及其它参数,从而显示CT灌注成像不但能显示肿瘤形态学方面的改变,还能了解其功能、代谢变化的信息,因而在肺部肿瘤的影像诊断与鉴别诊断、生物学行为和严重度评价等方面具有重要作用,拥有较好的临床应用前景。 This article summarizes the principle and technical requirements of spiral CT perfusion imaging to evaluate the tumor microcirculation status, hemodynamic changes and other parameters provided in the imaging diagnosis of lung tumors, which shows that CT perfusion imaging can not only display tumor morphology It also has important functions in the imaging diagnosis and differential diagnosis of lung tumors, biological behavior and severity evaluation, and has a good clinical application prospects.