Ultrasound Flashcards
Intensity is too high for ultrasound patient will feel?
Dull, aching pain
Contact is not good during ultrasound patient will feel?
Prickling, tingling feeling,
Treatment size for ultrasound
2-6 times the sound head
Go deep the diverge.
1 MHz
Diverge right away.
3 MHz
Spreads out and weakens.
Diverge and attenuate.
Micromassage (decrease pain), vasoconstriction or dilation (decreases pain), and increase membrane permeability (decreases edema, helps with healing).
Non-thermal effects of ultrasound
Ultrasound waves are greater than _____.
20,000 Hertz
Electrical fields
Capacitance
Magnetic fields
Inductance
The ratio of peak power to the average power in the ultrasound beam measured I any cross-sectional pane.
Beam Nonuniformity Ratio (BNR)
Effective radiating area
ERA
You won’t get patient symptoms with ____ ultrasound setting?
Non-thermal