Skin blood flow changes during local arm heating: comparison between the laser-Doppler and frequency-corrected thermal clearance measurement

Rein Raamat; Boris Kudimov

doi:10.1117/12.517037

8 August 2003 Skin blood flow changes during local arm heating: comparison between the laser-Doppler and frequency-corrected thermal clearance measurement

Rein Raamat, Boris Kudimov

Author Affiliations +

Proceedings Volume 5123, Advanced Optical Devices, Technologies, and Medical Applications; (2003) https://doi.org/10.1117/12.517037
Event: 2003 Chapter books, 2003, Bellingham, WA, United States

Abstract

We compared two different techniques for non-invasive registration of fingertip skin blood flow changes in 5 healthy volunteers during local arm heating in the water bath from 21°C to 42°C. The laser-Doppler flowmetry (LDF) probe was attached to the pulp of the index finger, while the thermal clearance (TC) probe was fixed to the pulp of the middle finger. Computer simulation method, provided by the MATLAB package, was introduced to speed up the frequency response of the TC probe. By correlation analysis we evaluated the similarity of LDF and TC recordings. The median correlation coefficient for the relationship LDF versus TC equaled 0.74, the range being from 0.63 to 0.82. After an introduction of the computer-based frequency correction, the correlation increased till 0.88 with the range from 0.82 to 0.91. The corresponding improvement in r² ("goodness to fit") was 41%.

Citation Download Citation

Rein Raamat and Boris Kudimov "Skin blood flow changes during local arm heating: comparison between the laser-Doppler and frequency-corrected thermal clearance measurement", Proc. SPIE 5123, Advanced Optical Devices, Technologies, and Medical Applications, (8 August 2003); https://doi.org/10.1117/12.517037

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