Effect of carotid artery stenting on the external carotid artery

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Only a small region of the arterial lumen can be evaluated at any one time. Discrete pulsed Doppler sample volume must be moved serially throughout the.

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Presentation transcript:

Effect of carotid artery stenting on the external carotid artery Andrea Willfort-Ehringer, MD, Ramazanali Ahmadi, MD, Diego Gruber, Michael E Gschwandtner, MD, Angelika Haumer, Gottfried Heinz, MD, Wilfried Lang, MD, Herbert Ehringer, MD Journal of Vascular Surgery Volume 38, Issue 5, Pages 1039-1044 (November 2003) DOI: 10.1016/S0741-5214(03)00550-0

Fig 1 Color-coded duplex scan of a carotid bifurcation 1 year after stent implantation shows a typical high-grade stenosis at the orifice of the external carotid artery (ECA), underlined by the fast Fourier transform curve and by typical changes of color flow at the orifice. Blue areas, narrowing; green areas, flow turbulence. White arrows, stent; green arrows, orifice of ECA (stenosis) and fast Fourier transform flow curve. Scale of flow velocity is given in meters per second. Space between stent and perfused red lumen represents neointima with some hyperplasia. Journal of Vascular Surgery 2003 38, 1039-1044DOI: (10.1016/S0741-5214(03)00550-0)

Fig 2 A, Box plots (median; 25th, 75th percentiles) show development of median flow ratio over follow-up of 24 months of the ipsilateral external carotid artery (unbroken line) compared with the contralateral external carotid artery (dashed line). B, Box plots (median; 25th, 75th percentiles) show development of median flow ratio over follow-up of 24 months of the ipsilateral external carotid artery (unbroken line) compared with the ipsilateral stented internal carotid artery (dashed line). Journal of Vascular Surgery 2003 38, 1039-1044DOI: (10.1016/S0741-5214(03)00550-0)