Diagnostic and Interventional Radiology
Abdominal Imaging - Review

Contrast medium administration and image acquisition parameters in renal CT angiography: what radiologists need to know

1.

Department of Radiology, American University of Beirut, Beirut, Lebanon

2.

Department of Radiology, King Khalid University, Abha, Saudi Arabia

Diagn Interv Radiol 2016; 22: 116-124
DOI: 10.5152/dir.2015.15219
Read: 804 Downloads: 214 Published: 03 September 2019

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.

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