Pellerito J S, Taylor K J
Clin Diagn Ultrasound. 1992;27:97-112.
The impact of DCI on the evaluation of peripheral vascular disease is considerable. In essence, it is noninvasive angiography without the limitations of that modality. However, the pressure gradient can only be inferred, and pull-through pressure gradients are still the most accurate estimation of adequacy of flow. Nonetheless, segmental blood pressures and the peak velocities measured by duplex Doppler provide a noninvasive alternative for estimating pressure gradients. DCI imaging has greatly improved the perception of focal abnormalities and allows rapid appreciation of global hemodynamics. As further technical refinements improve resolution and sensitivity, color Doppler may eventually supplant angiography as the primary imaging modality in peripheral arterial diagnosis, reserving arteriography for interventional procedures.
动态对比增强成像（DCI）对外周血管疾病评估的影响颇为可观。实质上，它是一种无创血管造影术，且不存在该检查方式的局限性。然而，压力梯度只能通过推断得出，而回抽压力梯度仍是血流充足性的最准确评估指标。尽管如此，节段性血压以及经双功多普勒测量的峰值流速为估计压力梯度提供了一种无创替代方法。DCI成像极大地提升了对局灶性异常的认知，并能快速了解整体血流动力学情况。随着技术的进一步完善提高了分辨率和敏感性，彩色多普勒最终可能会取代血管造影术，成为外周动脉诊断的主要成像方式，而将动脉造影术保留用于介入操作。
