Study of thermal relaxation processes in life tissues by blood pulsation imaging technique


2019

Белавенцева А. В., Кульчин Ю. Н., Ромашко Р. В., Lyakhova L.P., Kamshilin A.A. and Mamontov O.V.

Статьи в журналах

Proceedings of SPIE

USA. Bellingham: SPIE - The International Society for Optical Engineering

Vol. 11024

-

0,238

0277-786X

Belaventseva A.V., Romashko R.V., Kulchin Yu.N., Lyakhova L.P., Kamshilin A.A. and Mamontov O.V. Study of thermal relaxation processes in life tissues by blood pulsation imaging technique //Proceedings of SPIE. - 2019. - Vol. 11024.

Laser Doppler Flowmetry and Laser Speckle Contrast Imaging are applied usually for assessment of parameters of the cutaneous blood flow during thermoregulation. Alternatively, this work explores the feasibility of blood pulsation imaging under incoherent green illumination for measuring the response of human body on local thermal impact. The proposed technique allows assessment of the cutaneous blood flow changes during thermoregulation simultaneously in different areas of the body. The experiment was conducted in two stages. The first stage is the introduction of tissue into a stressful state (cooling) and observation of its thermoregulation to the normal state. At the second stage, the tissue was heated up from the external heat source. It is found that, the blood pulsation increase in the preliminary cooled tissue is higher by 30-60%in comparison with that one obtained when the tissue was heated. It is shown that, the rate of blood pulsation amplitude increase of pre-cooled tissue is individual characteristic of a subject, while it is less depended on the subject's personal characteristics in the case of tissue heating.