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Volume 22, Issue 9, Pages 1138-1146 (September 2015)
Low-Volume Contrast Medium Protocol for Comprehensive Cardiac and Aortoiliac CT Assessment in the Context of Transcatheter Aortic Valve Replacement Lucas L. Geyer, MD, Carlo Nicola De Cecco, MD, U. Joseph Schoepf, MD, Justin R. Silverman, BA, Aleksander W. Krazinski, BA, Fabian Bamberg, MD, MPH, Daniel H. Steinberg, MD Academic Radiology Volume 22, Issue 9, Pages (September 2015) DOI: /j.acra Copyright © 2015 AUR Terms and Conditions
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Figure 1 Computed tomography (CT) topogram (“scout”) for study planning displaying both acquisition fields. The yellow box reflects the cardiac CTA study in caudocranial direction from the bottom of the heart to the tracheal bifurcation. The black box reflects the immediately following high-pitch CTA study of the aortoiliac access route in craniocaudal direction comprising the image acquisition field from the lung apices to the groins. (Color version of figure is available online.) Academic Radiology , DOI: ( /j.acra ) Copyright © 2015 AUR Terms and Conditions
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Figure 2 Retrospectively ECG-gated cardiac computed tomography for the assessment of the aortic root complex using a reduced contrast medium volume of 60 mL. Three-dimensional volume rendering (a). Preprocedural measurements for prosthesis sizing with assessment of the annulus area (b) and the distance between the annulus and both coronary arteries (c,d). (Color version of figure is available online.) Academic Radiology , DOI: ( /j.acra ) Copyright © 2015 AUR Terms and Conditions
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Figure 3 High-pitch dual-source computed tomography angiography of the aortoiliac access route for transcatheter aortic valve replacement planning using a reduced contrast medium volume of 60 mL. Three-dimensional visualization of the aortoiliac vasculature using coronal multiplanar reformation with vascular volume rendering overlay (a) and curved planar reformations (b). The mean attenuation between 293 HU and 326 HU in the external iliac arteries (c,d) allows for the safe assessment of the aortoiliac anatomy. (Color version of figure is available online.) Academic Radiology , DOI: ( /j.acra ) Copyright © 2015 AUR Terms and Conditions
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