Laser Hair Removal Study Exam Questions and Correct Answers
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Module
Laser Hair Removal
Institution
Laser Hair Removal
Laser Hair Removal Study Exam Questions and Correct Answers
What is phagocytosis? - Answer- Physiological process by which the body absorbs and eliminates the destroyed target
What is selective photothermolysis? - Answer- Laser light of a specific target containing the adequate chromophore w...
Laser Hair Removal Study Exam
Questions and Correct Answers
What is phagocytosis? - Answer- Physiological process by which the body absorbs and
eliminates the destroyed target
What is selective photothermolysis? - Answer- Laser light of a specific target containing
the adequate chromophore withe damaging the surrounding tissue.
What is thermal relaxation time? - Answer- Time it takes for the tissue to cool down and
dissipate to surrounding skin
What are the 4 basic laser parameters? - Answer- Wavelength, pulse duration, spot
size, and fluence
What is the pulse duration? - Answer- Duration of each laser pulse
What is the pulse duration of a 755nm laser? - Answer- 3ms
What is the pulse duration of a 1064nm laser? - Answer- Varies from 3ms to 20ms
What do long pulses target? - Answer- Thick hair
What do short pulses target? - Answer- Fine hair
What is the significance of a larger spot size? - Answer- The energy is delivered and
absorbed at a deeper level
What is the significance of a smaller spot size? - Answer- Has more energy but is
scattered
What spot size has more energy? - Answer- Small spot size
What is fluence? - Answer- Rate of energy delivered to area
What is photothermal? - Answer- Light energy transformed and dissipated as heat
What is photoacoustic? - Answer- Energy delivered so fast a shock wave is created
What is a q-switched laser? - Answer- Tattoo removal laser
What type of laser is a tattoo removal laser? - Answer- Q-switched, photoacoustic
, What is photochemical? - Answer- Light energy that starts a chemical reaction
What is photoablation? - Answer- Heats so quickly and thoroughly the tissue is ablated
What are the laser tissue interactions? - Answer- Photoacoustic, photothermal,
photoablative, photochemical
What type of laser do we use? - Answer- Photothermal
What are the 4 basic components to a laser? - Answer- Optical cavity, laser medium,
power source, delivery system
What type of crystals in the laser medium are in a Nd:Yag laser? - Answer- Garnet
What is the substance of our lasers that produces the laser beam? - Answer- Solid
What determines the wavelength of the laser? - Answer- Lasing medium
What is the dynamic cooling device? - Answer- Cryogen spray that sprays out just prior
to the laser being fired
What power source do our lasers use? - Answer- A 220 electric line
Are our optical fibers smooth or reflective - Answer- Smooth
What is the delivery system that our lasers use? - Answer- Optical fibers
What does ANSI stand for? - Answer- American national standards institute
What is the normal DCD set at? - Answer- 40/40
What safety measurements need to be in every room? - Answer- Laser danger sign, all
doors need to be closed, eyewear must be worn, window must be protected with an
opaque covering
What class of lasers do we use? - Answer- Class 4
What is optical density? - Answer- Measure of how much the laser radiation is reduced
as it passes through the protective eyewear
What do our lasers damage? - Answer- The retina
What does OSHA require? - Answer- Lock keys away from lasers at the end of the night
What type of mask should be worn? - Answer- Laser plume mask
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