Real-time technique for conversion of skin temperature into skin blood flow: human skin as a low-pass filter for thermal waves. Issue 12 (10th September 2019)

• Record Type: Journal Article
• Authors: Sagaidachnyi, Andrey; Fomin, Andrey; Usanov, Dmitry; Skripal, Anatoly
• Is Part Of: Computer methods in biomechanics and biomedical engineering. Volume 22:Issue 12(2019)
• Page Start: 1009
• Page End: 1019
• Publication Date: 2019-09-10
• Subjects: Skin temperature -- hemodynamics -- filtering -- low-pass filter -- blood flow imaging -- post-occlusive reactive hyperaemia; Biomechanics -- Data processing -- Periodicals; Biomedical engineering -- Periodicals; Biomechanics -- Periodicals; Biomedical Engineering -- methods -- Periodicals; Computing Methodologies -- Periodicals; 612.7
• DOI: 10.1080/10255842.2019.1615058
• Languages: English
• ISSNs: 1025-5842

Abstract

Abstract: Monitoring of skin blood flow oscillations related with mechanical activity of vessels is a very useful modality during diagnosis of peripheral hemodynamic disorders. In this study, we developed a new model and technique for real-time conversion of skin temperature into skin blood flow oscillations, and vice versa. The technique is based on the analogy between the thermal properties of the human skin and electrical properties of the special low-pass filter. Analytical and approximated impulse response functions for the low- and high-pass filters are presented. The general algorithm for the reversible conversion of temperature into blood flow is described. The proposed technique was verified using simulated or experimental data of cold stress, deep inspiratory gasp, and post-occlusive reactive hyperaemia tests. The implementation of the described technique will enable to turn a temperature sensor into a blood flow sensor.