COMPARATIVE ANALYSIS OF METHODS OF LASER DOPPLER FLOWMETRY AND DOPPLER ULTRASOUND MEASUREMENT OF BLOOD FLOW DURING THE PROCEDURE OF INTERMITTENT PNEUMATIC COMPRESSION

Abstract

The results of the analysis of microcirculation of the blood flow of the toe and Doppler ultrasound measurement of blood flow in the great femoral artery during the intermittent pulsating compression procedure (pressotherapy) are presented. During the procedure of pressotherapy, a professional device "Doctor Life Mark 400" (South Korea) was used. Microcirculation was measured using a portable laser Doppler fluometer "LAZMA PF" (Russia). In the study, an ultrasound device "Edan U50" (China) with a linear sensor model L15-7b with a frequency in the pulsed Doppler mode (PW) of 7.2 MHz was used to obtain a Dopplerogram. The image processing program "ImageJ" was used to analyze the received Dopplerograms. The technique included establishing the correspondence of the intensity on the Dopplerogram to the number of blood cells from which the ultrasound radiation was reflected. This technique allows you to calculate the average speed and volume blood flow over the period of the cardiac cycle, to build the intensity distribution by speed. These parameters were compared at different time intervals, differing in the modes of occlusion and its reset, as well as the beginning and end of the pressotherapy procedure. Arterial resistance was assessed, which was compared with the dynamics of perfusion in the limb of the leg. In studies, both a decrease in the average speed after the ACC procedure and its increase were observed. The dynamics of volumetric blood flow was also multidirectional and corresponded to the nature of perfusion changes measured using a laser Doppler fluometer.

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Mashkov Konstantin
Saratov National Research State University
Russia

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