what is the distance measured in nanometers betwee
light of only one color one specific wavelength
the process where by a newly
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Electrolysis and laser
Electrolysis and laser
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Electrolysis IBEC+Laser STATE BOARD Practice test 20 24 Questions With 100% Correct Answers!!
Laser stands for what? Answer- Light
Amplification by
Stimulated
Emission of
Radiation
What is the distance measured in nanometers between two peaks or two troughs known as? Answer- Wavelength
Light of only one color & one specific wavelength is known as? Answer- Monochromatic
Refraction is also known as what? Answer- Transmission
The process where by a newly created photon of light (generated through amplification) acquires energy equal to the photons that created it is known as? Answer- Stimulated Emission
The states of equilibrium or middle state of light Answer- Metastable State
Who theorized stimulated emission? Answer- Albert Einstein
The part of the laser that contains the active medium is called? Answer- Resinator cavity
What are the states of light in stimulated emission? Answer- Ground State
Excited State
Singlet State
Metastable State
Alexandrite laer is in the visible light spectrum at what wavelength? Answer- 755 nm
The Nd:YAG laser falls in the invisible light spectrum with a wavelength of what? Answer- 1064 nm
What type of wave is used in laser hair removal? Answer- Pulsed wave A chromophore is also know at what? Answer- Target
The chromophore absorbs what? Answer- Energy
Goggles worn by the patient and practitioner must be approved by which group? Answer- ANSI (American National Standard Institute) for Class 3B and Class 4 Lasers
Each laser wavelength is what to its machine? Answer- Specific
What are the parameters when doing laser hair removal? Answer- Wavelength
Spot Size
Fluence
Pulse Width
Pulsed lasers allow for selective heating of specific targets, this is also known as? Answer- Selective Photothermolysis
The rate/amount of energy delivered within a given area is known as? Answer- Fluence
An increase in fluence equals an increase in what? Answer- Heat. Resulting in more
damage
The length of time the light/energy is in contact with the target that is measured in milliseconds (ms): Answer- Pulse width/Pulse duration
If the time of pulse duration is changed from milliseconds to nanoseconds the laser is what? Answer- Q Switched
A Q switched laser is used for what? Answer- Tattoo removal
Which skin types can tolerate an Alex laser? Answer- 1-4
Which skin types can tolerate a Nd:YAG laser? Answer- All skin types
Which skin type should only have electrolysis and no laser? Answer- Type 1
If the pulse width is greater than the thermal relaxation time it results in? Answer- A burn
If the pulse width is less than or equal to the thermal relaxation time it results in? Answer- Perfect hair removal
Larger structures have __________ thermal relaxation times (TRT) Answer- Longer
Smaller structures have _______ thermal relaxation times (TRT) Answer- Shorter What kind of pulse widths protect the epidermis, penetrate deeper and cool more slowly? Answer- Long
Longer pulse widths are for what skin type? Answer- 4-6
What kind of pulse widths are more aggressive and heat up and cool down quickly? Answer- Short
Shorter pulse widths are for what skin type? Answer- 1-3
What percentage of follicles are damaged with each laser treatment? Answer- 15%
What is a long-term stable reduction of the growing hairs after a treatment regime? Answer- Laser Hair Removal (LHR)
What does the FDA call laser hair removal? Answer- Permanent hair reduction
What is the highest setting the skin can tolerate without damage called? Answer- Fluence Threshold
What is the highest setting the patient can tolerate without the treatment becoming impossible called? Answer- Patient Threshold
The amount of hair per one square centimeter is known as? Answer- Hair density
The higher the hair density, the _______ the fluence? Answer- Lower
What percentage of overlapping do you want when doing LHR? Answer- 30%
Darker/tanned skin requires what kind of fluence? Answer- Lower
What should you never use to clean a patient's skin prior to LHR? Answer- Alcohol
Pulse duration is measured in what unit? Answer- milliseconds (ms)
Spot size is measured in what unit? Answer- millimeters (mm)
Repetition rate is measured in what unit? Answer- hertz (Hz)
Who is the grandfather of laser and was the first person to use water to cool the skin during laser? Answer- Rox Anderson
The formula for fluence is? Answer- Joules = J/cm2
What kind of lasers allow for selective heating of specific targets? Answer- Selective
photothermolysis
For deeper laser penetration what should the practitioner do to the laser? Answer- Change to a bigger spot size
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