心电门控多层螺旋CT血管造影评价年龄相关的颈动脉弹性

摘要

目的通过多层螺旋CT血管造影评价年龄相关的颈动脉弹性。资料与方法对34例心血管健康人群进行多时相心电门控多层螺旋CT血管造影，测量不同时相颈内动脉、颈动脉球和颈总动脉的横截面，结合不同时相颈动脉横截面积以及脉压计算颈内动脉、颈动脉球部和颈总动脉的弹性。结果颈内动脉、颈动脉球部和颈总动脉的弹性与年龄之间均呈显著线性负相关（r=－0.73、－0.74、－0.64, P<0.01）。结论作为一种新的方法，心电门控多层螺旋CT血管造影可以可靠地定量评价颈动脉弹性。在心血管健康人群，随着年龄增加颈动脉弹性降低。%Purpose To evaluate the correlation between carotid elasticity and age using electrocardiogram (ECG)-gated multi-detector CT angiography (MDCTA).Materials and Methods ECG-gated multiple phases MDCTA was performed on 34 vascular health subjects. Cross-section of the internal carotid artery (ICA), carotid bulb (CB) and common carotid artery (CCA) were measured at different phases. Carotid elasticity at ICA (EICA), CB (ECB) and CCA (ECCA) was calculated based on the carotid cross-sectional area changes and pulse pressure (PP).Results The EICA, ECB and ECCA showed significantly negative linear correlation with age (r=-0.73,-0.74 and-0.64,P<0.01). Conclusion The ECG-gated MDCTA is a novel method to evaluate carotid elasticity quantitatively and reliably. Carotid elasticity decreases with aging in vascular health population.