Laser, Light Energy, and Radiofrequency Therapy Flashcards
the removal of surface material from the body; devices of this type vaporize, cut, or removal all or part of the epidermis and or dermis
ablation
the ability to cut, vaporize, or remove using a laser
ablative
the uptake of one substance into another; in laser/light therapy, the attraction of energy particles, liquid, or gas to a particular chromaphore or target in the skin
absorbtion
the act of removing light energy from a beam before it exits a second medium method of blocking laser energy
attenuation
current that flows on a path of least resistance between postive and negative electrodes that are placed at opposite ends of the treatment forceps or device head; no dispersive electrode needed
bipolar radiofrequency energy (RF)
the colored cells or target in the epidermis or dermis that absorbs the laser beam’s thermal energy, causing the desired injury or destruction of the material
chromophore
parallel rays of light that travel spatilly and temporarilly in phase with each other
coherant light
a gas liquified that is cooled to -238 degrees F
cryogen
a grounding pad placed on the individual’s thigh or an area of large tissue mass that receives the radiofrequency energy
dispersing electrode
irradiance multiplied by the exposure time, measured in joules per square centimeter (J/cm^2)
fluence
electromagnetic radiation found in the invisable spectrum of light
infrared
a polychromatic, noncoherant, dispersive band of light commonly using wavelengths from 500 to 1200 nm; common photoepilation hair reduction method
intense pulsed light (IPL)
the rate of energy being delivered to tissue by a laser light source; measured in watts per square centimeter (w/cm2)
irradiance
unit of energy or work; in thermodynamics, these are defined as a unit of heat energy used to measure the energy change in an object as it warms or cools from temperature T, to temperature T2; .1____ = 1 watt/second
joules
plume or smoke that is generated from an ablative laser device
laser-generated air contaminants (LGAC)
person responsible for the laser safety program at the facility; person authorized to monitor operation, enforce controls, and oversee hazards associated with laser usage
laser safety officer (LSO)
device made up of panels of tiny diodes that are pulsed in an exclusive array sequence to trigger a photobiochemical response
light emitting diode (LED)
splitting up or destruction of fat cells
lipolysis
microwave amplification by stimulated emission of radiation
maser
the level of laser radiation to which a person may be exposed without hazardous ocular or tissue effects
maximum permissible exposure (MPE)
column of tissue that is heated by a fractional laser device
microthermal zone
to stimulate or change cellular function
modulate
describes light consisting of one wavelength that is typically found emitted from a laser system
monochromatic
radiofrequency electrical current that uses a dispersive electrode to return the energy back to the generator device
monopolar radiofrequency energy
deep dermal pigmented lesion usually found on the face in populations of darker-skinned asian
nevus of ota
zone in which direct, reflected, or scattered radiation, during normal operation, exceeds the maximum permissible exposure (MPE)
nomial hazard zone (NHZ)
amount of attenuation or reduction of radiant laser energy as it passes through the filter material in the laser eyewear
optical density (OD)
cavity containing a laser rod or tube made up of two reflective mirrors at each end; the mirrors reflect light back and forth to build up amplification of the laser light under external stimulus
optical resonator
Hemoglobin in red blood cells that has been oxygenated; a protein in red blood ccells
oxyhemoglobin
LED technology that uses energy producing packets of light to enhance fibroblast collagen synthesis
photomodulation
the elemental unit of light; particle of energy that has motion and travels in waves
photons
the rate of energy being delivered to tissue by a laser light source; measured in watts per square centimeter (w/cm2)
power density
duration of an individual pulse of laser light; usually measure in milliseconds
pulse duration/pulse width
general physical process involving moving particles that are dispersed through a medium in a nonuniform manner
scatter
treatment using an appropriate wavelength, exposure time, and pulse duration with sufficient energy fluence to absorb light into a specific area; allows damage to targeted tissue without involving the surrounding area
selective photothermolysis
diameter of the optical laser or light beam
spot size
the time it takes for the target tissue to dissipate 50% of the heat attained by a laser pulse
thermal relaxation time
