Works for the division of cardiovascular imaging at the Medical University of South Carolina in Charleston and the department of diagnostic and interventional radiology at the University Hospital Frankfurt in Germany.
Work for the division of cardiovascular imaging at the Medical University of South Carolina.
Radiol Technol. 2021 Jan;92(3):232-239.
To evaluate a new contrast media (CM) injection system in patients undergoing coronary computed tomography angiography (CCTA).
Seventy-one consecutive patients (33 men and 38 women, mean age 59.0 ± 14.5 years) who underwent CCTA between February and April 2019 using the CT injection system MEDRAD Stellant FLEX (Bayer) were included retrospectively in this single-center study. Quantitative and qualitative image quality parameters were assessed, and the injection system's usability and operational efficiency were evaluated. Results were compared with a matched control group.
All examinations were rated as diagnostic. Usability and operational efficiency of the new injector were rated higher than that of the standard injector system, and no significant differences were found for quantitative and qualitative image quality parameters compared with the control group ( ≥ .05).
Software-based injection facilitates individualized CM application while maintaining high image quality standards in CCTA. Diagnostic accuracy analysis was not performed, but as image quality analysis showed no significant differences, no discrepancies regarding this issue are expected.
This study demonstrates that the MEDRAD Stellant FLEX CT injection system allows for consistent high-quality CCTA scanning with increased usability and operational efficiency.
评估一种新的冠状动脉计算机断层扫描血管造影（CCTA）用造影剂注射系统。
本回顾性单中心研究纳入了 71 例 2019 年 2 月至 4 月期间使用 MEDRAD Stellant FLEX（拜耳）CT 注射系统进行 CCTA 的连续患者（33 名男性和 38 名女性，平均年龄 59.0±14.5 岁）。评估了定量和定性的图像质量参数，并对注射系统的可用性和操作效率进行了评估。结果与匹配的对照组进行了比较。
所有检查均被评为诊断性。与标准注射器系统相比，新注射器的可用性和操作效率更高，与对照组相比，定量和定性图像质量参数无显著差异（≥0.05）。
基于软件的注射方法可在维持 CCTA 高图像质量标准的同时实现个体化造影剂应用。未进行诊断准确性分析，但由于图像质量分析未显示出显著差异，预计不会存在该方面的差异。
本研究表明，MEDRAD Stellant FLEX CT 注射系统可实现一致的高质量 CCTA 扫描，同时提高了可用性和操作效率。
