肾CT血管造影中的造影剂注射及图像采集参数：放射科医生需要了解的内容
Contrast medium administration and image acquisition parameters in renal CT angiography: what radiologists need to know.
作者信息
Saade Charbel, Deeb Ibrahim Alsheikh, Mohamad Maha, Al-Mohiy Hussain, El-Merhi Fadi
机构信息
Department of Radiology, American University of Beirut, Beirut, Lebanon.
出版信息
Diagn Interv Radiol. 2016 Mar-Apr;22(2):116-24. doi: 10.5152/dir.2015.15219.
Abstract
Over the last decade, exponential advances in computed tomography (CT) technology have resulted in improved spatial and temporal resolution. Faster image acquisition enabled renal CT angiography to become a viable and effective noninvasive alternative in diagnosing renal vascular pathologies. However, with these advances, new challenges in contrast media administration have emerged. Poor synchronization between scanner and contrast media administration have reduced the consistency in image quality with poor spatial and contrast resolution. Comprehensive understanding of contrast media dynamics is essential in the design and implementation of contrast administration and image acquisition protocols. This review includes an overview of the parameters affecting renal artery opacification and current protocol strategies to achieve optimal image quality during renal CT angiography with iodinated contrast media, with current safety issues highlighted.
摘要
在过去十年中，计算机断层扫描（CT）技术呈指数级进步，带来了空间和时间分辨率的提升。更快的图像采集使得肾脏CT血管造影成为诊断肾血管病变可行且有效的非侵入性替代方法。然而，随着这些进展，对比剂给药方面出现了新的挑战。扫描仪与对比剂给药之间的同步不佳降低了图像质量的一致性，导致空间和对比分辨率较差。全面了解对比剂动力学对于对比剂给药和图像采集方案的设计与实施至关重要。本综述概述了影响肾动脉强化的参数以及在使用碘化对比剂进行肾脏CT血管造影时实现最佳图像质量的当前方案策略，并突出了当前的安全问题。
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