Journal «Angiology and Vascular Surgery» • 

2011 • VOLUME 17 • №3

Present-day approach to comprehensive ultrasonographic study of patients with pathological deformity of the internal carotid artery

Timina I.E., Burtseva E.A, Losik I.A.
Department of Ultrasonographic Diagnosis State Federal Facility «A.V. Vishnevsky Institute of Surgery» under the Russian Federation Ministry of Public Health and Social Development, Moscow, Russia

The authors report herein the findings of a comprehensive ultrasonographic study comprising a total of fifty-eight patients diagnosed with a pathological deformity of the internal carotid artery (PD ICA). A special emphasis was placed on investigating the structural and functional properties of the arterial wall, with the assessment of elastic properties of the common carotid artery (CCA) and the values of the flow-dependent dilation (FDD) of the brachial artery, also evaluating the anatomical shape of the pathological deformity concerned, analyzing the blood flow linear velocity all along the length of the ICA, with the calculation of the velocity gradient, accompanied and followed by studying spectral characteristics of the blood strec, n, also assessing the functional state of the arteries of the circle of Willis. The overwhelming majority of the examined patients appeared to demonstrate a statistically significant decrease in the FDD index, distensibility coefficient and the compliance coefficient, accompanied and followed by an elevation of the rigidity index, as compared with the control group (p<0.05). We determined certain correlation between the appearance of the signs of blood flow turbulence and the values of the velocity gradient depending on the shape of the deformity. To this was added the analysis of the state of the value of the cerebral circulatory reserve depending upon the clinical manifestations of the disease.

KEY WORDS: duplex scanning, pathological deformity of the internal carotid artery, flow-dependent vasodilation of the brachial artery, compliance coefficient, distensibility coefficient, rigidity index, kinking, cerebral circulatory reserve.

P. 57

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