Dynatron 150plus, Service Manual

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Dynatron ® 150 plus
Ultrasound Usage Cautions
22
Treatment Time
For Sub-Acute Conditions:
area to be treated (cm
2
) = minutes of treatment
1.5 x ERA
For Chronic Conditions:
area to be treated (cm
2
) = minutes of treatment
1.0 x ERA
For Maximal Thermal Effect:
area to be treated (cm
2
) = minutes of treatment
0.8 x ERA
Treatment Intensity
Several factors come into play as one decides the level of intensity for the treatment.
1. Superficial lesions require less intensity.
2. Less intensity should be used if bone is superficial to the treatment field.
3. Less intensity should be used when the stage of the injury makes heating
questionable.
4. Use a little lower intensity for the first treatment to gauge response.
5. Patient feedback is key. A treatment should feel warm, but the patient should
never feel heat, pain, stabbing, pricking or dull ache.
Acute Conditions:
0.1 – 0.5 W/cm
2
(no appreciable thermal effect).
Sub-Acute Conditions: 0.5 – 1.0 W/cm
2
(Mild to Moderate thermal effect).
Chronic Conditions: 1.0 – 2.0 W/cm
2
(Moderate to Strong thermal effect).
NOTE: It is very common that intensity is always 1.5 W/cm
2
. This is incorrect in
many cases. A more specific intensity should be used based on patient response and
stage of injury.
Frequency of Treatment
Treatment can be given daily. It is not uncommon to give Ultrasound twice daily, but
this may be excessive. Some guidelines may be helpful:
1. Daily may be the best maximum frequency.
2. Ultrasound can be effectively given every other day.
3. Ultrasound should give some positive benefits by the 3
rd
or 4
th
application. If not,
discontinue the treatment and consider other options.
4. A maximum of 12 to 15 Ultrasound treatments should be given. If the result
desired has not been reached by this point, Ultrasound may not be the proper
choice..
EXCEPTION: Some Chronic conditions which cause adhesions.