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Non-Contact Infrared Thermometers and Thermal Scanners for Human Body Temperature Monitoring: A Systematic Review
Yuanzhe Zhao1, Jeroen H M Bergmann1
1Department of Engineering Science, University of Oxford, Parks Road, Oxford OX1 3PJ, UK.
Sensors (Basel, Switzerland)
|September 9, 2023
Summary
Non-contact infrared thermometers (NCITs) and infrared thermography (IRT) offer convenient body temperature measurement. While generally accurate, NCITs show slightly better performance than IRT, with accuracy influenced by various factors.
Area of Science:
- Biomedical Engineering
- Medical Physics
Background:
- Non-contact infrared thermometers (NCITs) and infrared thermography (IRT) are increasingly used for non-invasive human body temperature measurement.
- Despite widespread use, concerns persist regarding their accuracy across diverse conditions.
Approach:
- This systematic review critically evaluated the performance of NCITs and IRT in body temperature monitoring.
- Synthesized evidence from 32 studies encompassing 72 unique settings, from controlled environments to clinical applications.
Key Points:
- Both NCITs and IRT correlate positively with contact-based thermometers.
- NCITs demonstrated slightly superior accuracy, with 29/50 settings achieving ±0.3 °C accuracy compared to 4/22 for IRT.
- Performance is influenced by measurement site, sensor type, reference tool, physiology, and environment.
Conclusions:
- NCITs and IRT can provide accurate body temperature measurements under specific conditions.
- Further research is needed to understand influential factors and establish standardized usage guidelines for infrared thermometry.
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