A study to differentiate normal and hypertensive subjects based on dynamic thermogram features

Abstract

Hypertension also familiarized as high or raised blood pressure. It is a condition where the blood vessels have continuously raised pressure. It is a condition where the systolic pressure is 140 mm/Hg or above and the diastolic pressure is 90 mm/Hg or above. According to the statistics of Directorate General of Health Services, Ministry of Health and Family Welfare, Government of India, the overall prevalence of hypertension in India by 2020 willbe159.46/1000 population. This paper aims to study the potential of Dynamic thermogram in differentiating normal and hypertensive subjects. In this technique the dynamic Infra-red (IR) thermogram of selected body regions like hand (left and right) and neck (left and right) are obtained for about 60secs using IR thermal camera from 50 subjects (normal =3D 25 and age and sex matched hypertensive =3D 25). The average temperature for each and every millisecond in these selected body regions is measured using ResearchIR software. The T-Test value shows a significant difference in almost all the parameters between normal and hypertensive subjects. The percentage difference is high for the rate of temperature change in the neck left region (92.5%).