medication transported into the body by ultrasonic energy
energy transmitted through mechanical waves.
one million cycles per second
the number of cycles per second
crystal that produces positive and negative electrical chargeswhen compressed or expanded
uninterrupted flow of electrons marked by a change in the direction of magnitude of the movement
device that converts one form of energy to another
result in elongation and contraction of the cord (bungee cord)(parallel)
the maximum departure of a wave from the baseline
the portion of the ultrasound beam that is used for therapeutic purposes
molecules are displaced perpendicularly (plucking a guitar string)
portion of the transducer 's surface area that produces ultrasonic energy
the alternation of high and low pressure exerted by ultrasound beam in regions of particle density
low density particles along the path of the wave
possesing a beam of parallel rays or waves that form a column of energy
the number of times the wave passes per second
the amount of power generated by a unit
th average intensity over the area of the transducer
describes the avarage intensity during the "ON" time of pulse.
measures the power of ultrasonic energy delivered to the tissue over a given time
the energy produced by an ultrasound generator
the energy produced in an ultrasound generator is measured in _____
the decrease in a wave's intensity resulting from the absorption, reflection, and refraction of energy
the ratio between the pulse duration and the pulse interval
a single-frequency wave formed by the collision of two waves of equal frequency and speed traveling in opposite directions
a deep seated ache resulting from overly intense application of ultrasonic energy that irritates the bones periosteum
results because of pressure changes created by the ultrasonic wave that deforms microscopic tissue
the amount of time the initial nonzero charge to the return to a zero charge, forming one complete cycle
the amount of time between the ultrasonic pulse
the compression of the bubbles during the high-pressure peak, but is follwed by a total collapse
used to produce therapeutic ultrasound( the vibration)
the unidirectional flow of fluids within the tissue caused by the application of therapeutic ultrasound
ratio between the highest intensity in an ultrasonic beam and the output reported on the meter
a surface where two materials of diffrent densities meet
the depth, measured in cm, at which 50% of the ultrasonic energy has been absorbed by the tissue
the distance between the start of the wave to the end of the wave

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Ultrasound Physics


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