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Laser Bio Physics TEST SAA Flashcards | StudBud
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Laser Bio Physics TEST SAA
Laser Bio Physics TEST SAA
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Questions
30
Answers
1
1064 ND YAG penetrates the ______and has the _____melanin absorption
Shallowest ,least
Shallowest,most
Deepest,most
Deepest ,least
2
In Lasers that the wavelength targets water, a shorter pulse duration is
The same
Hotter
More safe
Less safe
3
UVA,UVB and UVC rays are an example of what type of light
Invisible
Ultraviolet
Visible
None of above
4
Your pulse duration must be equal to or ________ than the targets TRT to effectively destroy it
Less than
None of the above
More than
Half
5
The larger a spot size is the deeper it penetrates
True
False
6
In the Fitzpatrick scale skin types range from I to
9
6
3
8
7
There is higher absorption of melanin in _____wavelengths
More colorful
Longer
Stronger
Shorter
8
Proper epidermal cooling can prevent a ______
Burn
Blister
Scar
All of the above
9
As spot size decreases Fluence must_______
Stay the same
Decrease
Increases
All of the above
10
A true laser beam is an example of stimulated emission of radiation
False
True
11
Thermal relaxation time is the time it takes for effected tissue to _______
Cool
Heat up
Tighten
Burn
12
A Laser beam is coherent, collimated and
All of the above
Divergent
Red
Monochromatic
13
In laser that the wavelength targets oxyhemoglobin, melanin, or ink a longer pulse duration is
More safe
Less safe
Hotter
Doesn’t matter
14
Who found the theory of stimulated emission
Charles towns
George bush
Albert Einstein
None of the above
15
Name the 4 laser tissue interactions
Absorption/Scatter
Transmission
All of the above
Reflection
16
Visible light is an example of spontaneous emission of radiation
True
False
17
Selective photothermolysis is the theory of applying light and heat to target without affecting any of the surrounding
Nails
Freckles
Tissue
Hair
18
IPL is not anTRUE laser
False
True
19
Visible light is between 400 and 700NM
False
True
20
The 3 primary methods of energizing an active medium are
Optical
Direct current
All of the above
Radio frequency
21
Pulse width is a measurement of _______
Light
Energy
Watts
Time
22
Lasers often named after its
None of the above
Gas
Medium
Creator
23
Fluence is expressed in _______
Hertz
Joules
Watts
Energy
24
Wavelength dictates
Energy
Both A and D - Depth / Chromophore
Chromophore absorption
Depth
25
Hertz is the number of pulses delivered per _____ onto the skin
Minute
None of the above
Second
Hour
26
Atoms are negatively charged electrons revolving around a______ charged nucleus
All of the above
Equally
Positively
Negatively
27
What chromophores are absorbed by laser light
Water
Oxyhemoglobin
All of the above
Melanin and ink
28
A Wave length is a measurement of ______
Height
Color
Time
Light
29
Larger spot sizes deliver _______ and require _____ energy
Shallow ,less
Shallow, more
Deeper , more
Deeper, less
30
100 microns is equivalent to 1 sheet of computer paper
True
False