LASER TEST QUESTIONS AND ANSWERS
1.The term "LASER" is an acronym for
Answer light amplification by stimulated emission of radiation
2.The very first therapeutic laser (of any class) received 510k market clear-
ance from the United States Food and Drug Administration (FDA) in .And
the first class 4 therapy laser gained FDA clearance in .
Answer 2002, 2003
3.In the late 1960's he made the observation that the hair of shaved mice
grew back more rapidly after exposure to low power laser light. As a result
he is known as the 'Father of Laser Therapy'. Who is he?
Answer Dr. Endre Mester
4.In 2015 a world-wide panel of experts designated the term to
describe the therapeutic use of light.
Answer photobiomodulation, or PBM
5.Surgical lasers cut tissue; and are used for performing surgery, removal
of 'lumps and bumps', and other ablative laser procedures. What is the
mecha- nism of action for surgical lasers?
Answer Photothermal
the laser light has a very high power density and causes excessive
heating of water molecules, which vaporizes the water, "explodes" the
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, cells, and thus cuts the tissue.
6.Therapeutic lasers help to enhance tissue healing, and are used for pain
management, wound and injury healing, and other uses. What is the mecha-
nism of action for therapeutic lasers?
Answer Both A and C are correct (Photochemical and
Photobiostimulative)
7.Wavelength measures the distance between two corresponding points on
adjacent light waves, for example from one peak to the next, or from one
trough to the next. Which is the proper unit for measuring wavelength?
Answer nanometers (nm)
8.t or f- Compared to healthy cells, compromised or unhealthy cells in
tissues that are injured or damaged are more 'reduced'. This means that
damaged cells will more readily absorb oxygen; and therefore damaged
tissues will respond more readily to laser therapy.
Answer true
9.t or f- The "electromagnetic spectrum" is used to describe the entire
range of radiation - including gamma rays, x-rays, ultraviolet, visible light,
infrared, microwaves, and radio waves. Therefore, it is appropriate to refer to
all of these as "electromagnetic radiation".
Answer true
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1.The term "LASER" is an acronym for
Answer light amplification by stimulated emission of radiation
2.The very first therapeutic laser (of any class) received 510k market clear-
ance from the United States Food and Drug Administration (FDA) in .And
the first class 4 therapy laser gained FDA clearance in .
Answer 2002, 2003
3.In the late 1960's he made the observation that the hair of shaved mice
grew back more rapidly after exposure to low power laser light. As a result
he is known as the 'Father of Laser Therapy'. Who is he?
Answer Dr. Endre Mester
4.In 2015 a world-wide panel of experts designated the term to
describe the therapeutic use of light.
Answer photobiomodulation, or PBM
5.Surgical lasers cut tissue; and are used for performing surgery, removal
of 'lumps and bumps', and other ablative laser procedures. What is the
mecha- nism of action for surgical lasers?
Answer Photothermal
the laser light has a very high power density and causes excessive
heating of water molecules, which vaporizes the water, "explodes" the
1/
11
, cells, and thus cuts the tissue.
6.Therapeutic lasers help to enhance tissue healing, and are used for pain
management, wound and injury healing, and other uses. What is the mecha-
nism of action for therapeutic lasers?
Answer Both A and C are correct (Photochemical and
Photobiostimulative)
7.Wavelength measures the distance between two corresponding points on
adjacent light waves, for example from one peak to the next, or from one
trough to the next. Which is the proper unit for measuring wavelength?
Answer nanometers (nm)
8.t or f- Compared to healthy cells, compromised or unhealthy cells in
tissues that are injured or damaged are more 'reduced'. This means that
damaged cells will more readily absorb oxygen; and therefore damaged
tissues will respond more readily to laser therapy.
Answer true
9.t or f- The "electromagnetic spectrum" is used to describe the entire
range of radiation - including gamma rays, x-rays, ultraviolet, visible light,
infrared, microwaves, and radio waves. Therefore, it is appropriate to refer to
all of these as "electromagnetic radiation".
Answer true
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11
