低对比剂剂量导管导向CT血管造影（CCTA）。
Low Contrast Dose Catheter-Directed CT Angiography (CCTA).
作者信息
Formosa Amanda, Santos Denise May, Marcuzzi Daniel, Common Andrew A, Prabhudesai Vikramaditya
机构信息
VIR Division, Department of Medical Imaging, St. Michael's Hospital, University of Toronto, 30 Bond Street, Toronto, ON, M5B 1W8, Canada.
University of Toronto Scarborough, Department of Psychology, 1265 Military Trail, Toronto, ON, M1C 1A4, Canada.
出版信息
Cardiovasc Intervent Radiol. 2016 Apr;39(4):606-10. doi: 10.1007/s00270-015-1232-y. Epub 2015 Oct 30.
PURPOSE
Catheter-directed computed tomography angiography (CCTA) has been shown to reduce the contrast volumes required in conventional CTA, thus minimizing the risk of contrast-induced nephropathy (CIN).
MATERIALS AND METHODS
A retrospective analysis was performed on cases where CCTA was used to assess access vessels prior to transfemoral aortic valve implantation (TAVI, n = 53), abdominal aortic aneurysm assessment for endovascular aneurysm repair (EVAR, n = 11), and peripheral vascular disease (PVD, n = 24).
RESULTS
We show that CCTA can image vasculature with adequate diagnostic detail to allow assessment of lower extremity disease, anatomic suitability for EVAR, as well as potential contraindications to TAVI. Average contrast volumes for pre-TAVI, pre-EVAR, and PVD cases were 7, 11, and 28 mL, respectively.
CONCLUSION
This study validates the use of CCTA in obtaining diagnostic images of the abdominal and pelvic vessels and in imaging lower extremity vasculature.
目的
导管导向计算机断层扫描血管造影（CCTA）已被证明可减少传统CTA所需的对比剂用量，从而将对比剂肾病（CIN）的风险降至最低。
材料与方法
对使用CCTA评估经股动脉主动脉瓣植入术（TAVI，n = 53例）前的入路血管、腹主动脉瘤腔内修复术（EVAR，n = 11例）的腹主动脉瘤评估以及外周血管疾病（PVD，n = 24例）的病例进行回顾性分析。
结果
我们表明，CCTA能够以足够的诊断细节对血管系统进行成像，以评估下肢疾病、EVAR的解剖适应性以及TAVI的潜在禁忌证。TAVI术前、EVAR术前和PVD病例的平均对比剂用量分别为7、11和28 mL。
结论
本研究验证了CCTA在获取腹部和盆腔血管诊断图像以及下肢血管系统成像中的应用。
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