Spectroscopic and histological study of
CO2 laser interaction with rats tissues were carried out. We
detected for the first time the changes
in optical absorption spectra of rat's tissues with selective CO2
laser optical densities ranging from
20.64 to 34.40W/cm2. The laser exposed tissues show higher
absorbance in hemoglobin than that for
the unexposed tissue. Using the same laser and same optical
densities, the absorption spectra of
fresh blood were measured. Much intense peaks of hemoglobin in
the exposed fresh blood than that for the
corresponding peaks for the tissue were detected. A scheme
based on recent experimental findings is
proposed for explanation of this novel phenomenon. The
histological study shows thermal damage
of blood vessels localized at the dermis layer. At high laser
optical densities a vessel rupture with
hemorrhage were occurred. The results indicate a pronounced
modification of skin absorption
properties by laser irradiation. Such an effect is due to thermally
induced biophysical and biochemical
processes inside the highly heterogeneous tissue structure. A
clinical oximeter can be optimized by
using CO2 laser Photothermal effects This device plays an
important role during COVID-19 pandemic.
Author (s)
Details
Hassan H. Mohammed
Physics Department, College of
Science, University of Basrah, Basrah, Iraq and Iraq University College,
Department of Computer Engineering Technology, Alestiqlal Street, Basrah, Iraq.
Muzahim M. Abdullah
Physics Department, College of
Science, University of Basrah, Basrah, Iraq.
Amjad Al-Asadi
Physics Department, College of
Science, University of Basrah, Basrah, Iraq.
View Book :- https://bp.bookpi.org/index.php/bpi/catalog/book/239
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