Assessment of single-bolus contrast administration technique using hybrid dual-source ECG-gated thoracic and dual-source non-ECG-gated high-pitch abdominopelvic CT acquisitions for procedural planning before transcatheter aortic valve replacement.
Journal Article (Journal Article)
PURPOSE: This study aimed to assess vascular contrast opacification and homogeneity using single-bolus contrast administration with hybrid thoracic and abdominopelvic computed tomographic angiography in patients with severe aortic valve stenosis. MATERIALS AND METHODS: Combination electrocardiogram-gated thoracic and dual-source, high-pitch abdominopelvic computed tomographic angiography examinations of 50 patients with severe aortic stenosis between December 2013 and March 2014 were reviewed. Contrast administration was individualized to patient-specific physiology. Image analysis of vascular opacification was obtained and interdependencies of vascular contrast and homogeneity of contrast distribution were assessed. RESULTS: The mean volume of contrast administered was 106 ± 11.7 mL. Mean attenuation was 371 ± 90.7 Hounsfield units (HU) in the thoracic aorta and 388 ± 95.9 HU in the abdominal aorta. Homogeneous opacification was obtained throughout with coefficient of variation of 11%. CONCLUSIONS: Procedural planning for transcatheter aortic valve replacement can be achieved using a single-injection bolus contrast protocol in combination with a 2-part multidetector computed tomographic image acquisition technique with optimal opacification of major arterial structures.
Full Text
Duke Authors
- Gaca, Jeffrey Giles
- Harrison, John Kevin
- Kiefer, Todd Lee
- Koweek, Lynne Michelle Hurwitz
- Wang, Andrew
Cited Authors
- Walker, WL; Boll, DT; Bueno, JM; Kiefer, TL; Vavalle, JP; Gaca, JG; Harrison, JK; Hughes, GC; Wang, A; Hurwitz, LM
Published Date
- March 2015
Published In
Volume / Issue
- 39 / 2
Start / End Page
- 207 - 212
PubMed ID
- 25564297
Electronic International Standard Serial Number (EISSN)
- 1532-3145
Digital Object Identifier (DOI)
- 10.1097/RCT.0000000000000194
Language
- eng
Conference Location
- United States