Laser Hair Removal Test (in class exam)CORRECT 100%
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Module
Laser Hair Removal
Institution
Laser Hair Removal
What is the definition of the acronym LASER? - ANSWER Light Amplification by Stimulated Emission of Radiation
Name the specific wavelengths for laser hair removal. - ANSWER Ruby- 694 nm
Alex- 755 nm
Diode-800-810 nm
NDYAG- 1064 nm
Laser Hair Removal Test (in class exam)CORRECT
100%
What is the definition of the acronym LASER? - ANSWER Light Amplification by Stimulated Emission of
Radiation
Name the specific wavelengths for laser hair removal. - ANSWER Ruby- 694 nm
Alex- 755 nm
Diode-800-810 nm
NDYAG- 1064 nm
What determines the depth of penetration? - ANSWER Dependent on wavelength & spot size (width of
laser beam)
What are the four basic parameters of laser? - ANSWER wavelength, pulse width, spot size, fluence
How is wavelength measured? - ANSWER by the distance between two peaks and measured in
nanometers (nm)
(from peak to peak or trough to trough)
What percentage does TRT (Thermal Relaxation Time) have to accomplish? - ANSWER 50% (time
necessary for a target tissue to cool down by 50% through transfer of heat to surrounding tissue via
thermal diffusion)
What are the 4 types of epidermal cooling used? - ANSWER contact cooling(most efficient), cryogen
spray (applied before and/or after), air cooling (-34° C) , Gel (clear)
What is the concept (Theory) of Selective Photothermolysis? - ANSWER Selective destruction of the
target without thermal injury to the surrounding tissue.
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