Innovative Journal Innovative Journal of Medical and Health Science 2589-9341 1 1 2020 7 27 QUANTITATIVE MEASUREMENTS OF BLOOD FLOW PARAMETERS IN NORMAL INTERNAL CAROTID ARTERIES WITH COLOR DOPPLER ULTRASONOGRAPHY AND VASCULAR STENOSIS INDEX OF STENOTIC VESSELS 1 Mete Özdikici Journal Article https://doi.org/10.15520/jmrhs.v6i7.220 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.