Low Contrast Dose Catheter-Directed CT Angiography (CCTA)

• DOI: 10.1007/s00270-015-1232-y
• Publication Date: 2015-10-29T23:25:03Z
• Authors: Amanda Formosa; Denise May Santos; Daniel Marcuzzi; Andrew A. Common; Vikramaditya Prab...
• Keywords: Aged, 80 and over; Heart Valve Prosthesis Implantation; Male; Peripheral Vascular Diseases; Computed Tomography Angiography; Endovascular Procedures; Heart Valve Diseases; Contrast Media; Catheterization; Pelvis; 03 medical and health sciences; 0302 clinical medicine; Cardiovascular Diseases; Abdomen; Blood Vessels; Humans; Female; Kidney Diseases; Aged; Aortic Aneurysm, Abdominal; Retrospective Studies

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).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).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.This study validates the use of CCTA in obtaining diagnostic images of the abdominal and pelvic vessels and in imaging lower extremity vasculature.