Red Flags
Exposed metal is a contraindication to this treatment technique.
What is therapeutic ultrasound?
This flows through tissue and creates an electrical current.
What are electrons?
This is the type of ultrasound that helps drive medication into tissue.
What is phonophoresis?
Changing this aspect of the electrode placement can result in greater tissue depth for a electrical stimulation treatment.
What is the distance between the electrodes?
This is the name of the crystal in the ultrasound transducer head.
What is the piezoelectric crystal?
Acute inflammation is a contraindication to this specific treatment.
What is thermal ultrasound?
This is the time from the isoelectric line to peak amplitude.
What is rise time?
This parameter of ultrasound determines the physiological impact of the treatment.
What is duty cycle?
This is important for prepping the treatment area to decrease resistance before applying electrodes.
What is shaving and cleaning the area?
This type of wave transmits waves perpendicular to the force.
What is a transverse wave?
Treating over the carotid sinus is a contraindication of this treatment.
What is e-stim?
This is the characteristic of a current that is manipulated to impact different nerves as demonstrated by the strength duration curve.
What is phase duration?
This conducting medium does not transfer ultrasound waves effectively.
What is air?
This is the term for the phenomenon of the CNS filtering out nonmeaningful information.
What is habituation?
This tissue reflects almost 100% of ultrasound energy.
What is bone?
Motor level e-stim is a contraindicated with this condition, but general e-stim may help prevent this specific condition.
What is Deep Vein Thrombosis?
This is the measure of potential difference or electromotor force.
What is a volt?
This the effect of ultrasound that creates gas-filled bubbles.
What is cavitation?
When this parameter is too high, the nerve fibers cannot repolarize and therefore, the patient may not feel the treatment any longer.
What is frequency?
This determines whether or not an ultrasound transducer can produce a "hot spot" during a treatment.
What is the Beam Nonuniformity Ratio (BNR)?
This is the contraindication to ultrasound that Dr. Feld will find you and kick you in the teeth if you miss.
What is a fracture?
Impedance is the sum of these three factors.
What is resistance, capacitance, and inductance?
This is the output intensity of the ultrasound unit during continuous treatments, and is measured in W/CM2.
What is Spatial Average Intensity (SAI)?
This type of nerve fiber has the lowest capacitance.
What are large-diameter fibers?
This determines your treatment area.
What is the Effective Radiating Area (ERA)?