Journal
ANNALS OF BIOMEDICAL ENGINEERING
Volume 46, Issue 7, Pages 960-971Publisher
SPRINGER
DOI: 10.1007/s10439-018-2018-6
Keywords
Infrared thermography; Adsorption/desorption heat; Breathing sorption indicator; Mammals; Humans; Animals
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Funding
- Russian Foundation for Basic Research [18-08-00956]
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A search for robust noninvasive methods permitting to discern the respiration subtle peculiarities in mammals is a topical issue. A novel approach called sorption-enhanced infrared thermography (SEIRT), helping to solve this problem, is described. Its benefits spring from the integration of the infrared thermography (IRT) and chemical physics (phase transition heat release/absorption) within a single method. The SEIRT opportunities were verified in the investigation of 42 humans, 49 rats and 4 minipigs whose breathing waveforms were revealed to the last detail. It is shown that the SEIRT-obtained breathing-conditioned temperature response may exceed 10 A degrees C (!) even in small animals (rats) and that the SEIRT sensitivity is 4.5-250 times higher than that of the matched IRT-based techniques. The new method is validated by a comparison with that based on thorax breathing movement (TBM). It is shown that the SEIRT-determined breaths have a close correlation with those determined via TBM (r = + 1.000, p ae0.05); this is also true for breathing intervals (r = + 0.9772, p ae0.05). SEIRT opens up the way to a high-resolution noncontact quantitative evaluation of respiration rate and breathing waveforms in both humans and animals. It may become a cutting-edge technique in diagnostic medicine and biomedical research.
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