4.4 Article

Forehead, Temple and Wrist Temperature Assessment of Ethnic Groups using Infrared Technology

Journal

MEDICAL ENGINEERING & PHYSICS
Volume 102, Issue -, Pages -

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.medengphy.2022.103777

Keywords

Body temperature; screening temperature protocol; COVID-19; non-contact infrared thermometer; Black; Half-Black; and Caucasian skins

Funding

  1. Araucaria Foundation
  2. CNPq
  3. Coordination for Improvement of Higher Education Personnel -Brazil (CAPES) [001, LAETA-UIDB/50022/2020, UIDP/50022/2020]

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Non-contact infrared sensors are widely used for initial screening of body temperature during the COVID-19 pandemic. This study investigated the thermal differences in different anatomical points and found that the temperature at the temple region is higher than other regions, suggesting it should be considered for initial screening.
Non-contact infrared sensors are widely used as a diagnostic tool for elevated body temperature during initial screening for coronaviruses. The aim of this study was to investigate the thermal differences at three anatomical points: temple, forehead, and wrist, in the initial screening for temperature indicative of febrile and non-febrile states in skin pigmentation variations in Black, Half-Black and Caucasian skins, correlated with height and weight variables. Temperatures were obtained by means of an infrared thermometer in 289 volunteers with mean age of 18.30 +/- 0.76, in a controlled environment according to Singapore Standard, SS582 part 1 and 2, normative standard IEC 80601-2-59, with standard technical protocols established by the International Organization for Standardization, ISO / TR 13154. The data were processed in MATLAB (R) R2021a, and data normality verified by Kolmogorov-Smirnov test, non-parametric data paired between temple / forehead / wrist were compared using the Wilcoxon signed-rank test. The results show different median temperatures in these anatomical regions, 37.2 degrees C at the temple, 36.8 degrees C at the forehead and 36.4 degrees C at the wrist. As the temple region presents a temperature higher than the other investigated regions and, therefore, close to the core temperature, it should be considered for the initial screening of SARS-CoV-2 when using non-contact infrared thermometers. Furthermore, no significant changes were found due to variation in skin tone, height, or weight.

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