Quantitative Measurements of Blood Flow Parameters in Normal Internal Carotid Arteries with Color Doppler Ultrasonography and Vascular Stenosis Index of Stenotic Vessels

Abstract

OBJECTIVES
The aim of this study was to determine the values of peak systolic
velocity (PSV), end-diastolic velocity (EDV), resistive index (RI),
pulsatility index (PI), and blood flow in normal internal carotid arteries
(ICA) together with the percentage of stenosis (for diameter and area),
and vascular stenosis index (VSI) in stenotic ICA.
MATERIALS AND METHODS
Fifteen male and 16 female adult patients aged between 50-71 with
atherosclerotic plaques with different thicknesses in the internal carotid
arteries, and together with 20 normal adult males and 20 females aged
between 25 and 45 years were included in this work.
The values of PSV, EDV, RI, PI, and blood flow volume of normal ICA
were measured. Stenosis percentages and VSI values were obtained
in the narrowed vessels due to atherosclerotic plaques. All parameters
were shown as mean ± SD.
For the statistical analysis, Statistical Package for Social Sciences
Version 15.0 (SPSS Inc., Chicago, IL, USA) software was used.
RESULTS
We have shown the data together in Table 2,3 without discriminating
between gender and right left side. The normal lumen diameter of the
ICA, the diameter of the stenotic lumen, the percentage of stenosis for
diameter, normal lumen area, stenotic lumen area, the percentage of
stenosis for the area, and VSI values were shown in Table 3.
CONCLUSION
We believe that this data can be useful in evaluating cerebral hemodynamics in healthy and sick people because we cannot find any study on
VSI in ICA stenosis in the literature.