Modalities Laser
The term LASER is an acronym. What do the letters stand for?
Light Amplification Stimulated Emission of Radiation
Light Augmentation by the Simulated Emission of Radiation Light Amplification by the
Simultaneous Emission of Rays Light Augmentation by the Scattered Emission of
Radiation - answer Light Amplification Stimulated Emission of Radiation
The very first therapeutic laser (of any class) received 510k market clearance from the
United States Food and Drug Administration (FDA) in___________.
2002
1964
1975
1985 - answer2002
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?
Dr. Endre Mester
Theodore Maiman
Albert Einstein
Jay Turner - answerDr. Endre Mester
In 2005 the members of the North American Association for Laser Therapy (NAALT)
finally accepted the term ____________ to describe the therapeutic use of light.
photobiomodulation, or PBM
photobiostimulation
phototherapy, or PT
low-level laser therapy, or LLLT - answerphotobiomodulation, or PBM
Surgical lasers cut tissue, and are used for performing surgery, removal of 'lumps and
bumps', and other ablative laser procedures.
What is the mechanism of action for surgical lasers?
Photothermal: the laser light has a very high power density and causes excessive
heating of water
molecules, which vaporizes the water, "explodes" the cells, and thus cuts the tissue.
reactions.
, Photochemical: the laser light is absorbed by chromophores in the tissue, inducing
photochemical
Photobiostimulative: the laser light is absorbed by chromophores in the tissue,
stimulating
increases in cellular activity.
No answer text provided. - answerPhotothermal: the laser light has a very high power
density and causes excessive heating of water
molecules, which vaporizes the water, "explodes" the cells, and thus cuts the tissue.
reactions.
Therapeutic lasers help to enhance tissue healing, and are used for pain management,
wound and injury healing, and other uses.
What is their mechanism of action?
the laser light is absorbed by chromophores in the tissue, stimulating increases in
cellular activity
the laser light has a very high power density and causes excessive heating of water
molecules.
the laser light is absorbed by muscle fibers, inducing photochemical reaction and
produce heat.
No answer text provided - answerthe laser light is absorbed by chromophores in the
tissue, stimulating increases in cellular activity
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?
Nanometers
Joules
Hertz
Watts - answerNanometers
Compared to healthy cells, compromised cells in tissues that are injured or damaged
are more 'reduced', meaning they will more readily absorb oxygen; and therefore
respond more readily to the transfer of energy that occurs secondary to laser therapy.
True
False - answerTrue
The "electromagnetic spectrum" is a term used to describe the entire range of radiation,
including gamma rays, x-rays, ultraviolet, visible light, infrared, microwaves, and radio
waves.
And it is appropriate to refer to all of these as "electromagnetic radiation".
True
False - answerTrue
The term LASER is an acronym. What do the letters stand for?
Light Amplification Stimulated Emission of Radiation
Light Augmentation by the Simulated Emission of Radiation Light Amplification by the
Simultaneous Emission of Rays Light Augmentation by the Scattered Emission of
Radiation - answer Light Amplification Stimulated Emission of Radiation
The very first therapeutic laser (of any class) received 510k market clearance from the
United States Food and Drug Administration (FDA) in___________.
2002
1964
1975
1985 - answer2002
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?
Dr. Endre Mester
Theodore Maiman
Albert Einstein
Jay Turner - answerDr. Endre Mester
In 2005 the members of the North American Association for Laser Therapy (NAALT)
finally accepted the term ____________ to describe the therapeutic use of light.
photobiomodulation, or PBM
photobiostimulation
phototherapy, or PT
low-level laser therapy, or LLLT - answerphotobiomodulation, or PBM
Surgical lasers cut tissue, and are used for performing surgery, removal of 'lumps and
bumps', and other ablative laser procedures.
What is the mechanism of action for surgical lasers?
Photothermal: the laser light has a very high power density and causes excessive
heating of water
molecules, which vaporizes the water, "explodes" the cells, and thus cuts the tissue.
reactions.
, Photochemical: the laser light is absorbed by chromophores in the tissue, inducing
photochemical
Photobiostimulative: the laser light is absorbed by chromophores in the tissue,
stimulating
increases in cellular activity.
No answer text provided. - answerPhotothermal: the laser light has a very high power
density and causes excessive heating of water
molecules, which vaporizes the water, "explodes" the cells, and thus cuts the tissue.
reactions.
Therapeutic lasers help to enhance tissue healing, and are used for pain management,
wound and injury healing, and other uses.
What is their mechanism of action?
the laser light is absorbed by chromophores in the tissue, stimulating increases in
cellular activity
the laser light has a very high power density and causes excessive heating of water
molecules.
the laser light is absorbed by muscle fibers, inducing photochemical reaction and
produce heat.
No answer text provided - answerthe laser light is absorbed by chromophores in the
tissue, stimulating increases in cellular activity
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?
Nanometers
Joules
Hertz
Watts - answerNanometers
Compared to healthy cells, compromised cells in tissues that are injured or damaged
are more 'reduced', meaning they will more readily absorb oxygen; and therefore
respond more readily to the transfer of energy that occurs secondary to laser therapy.
True
False - answerTrue
The "electromagnetic spectrum" is a term used to describe the entire range of radiation,
including gamma rays, x-rays, ultraviolet, visible light, infrared, microwaves, and radio
waves.
And it is appropriate to refer to all of these as "electromagnetic radiation".
True
False - answerTrue
