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OBJ_BUCH-11-001.book Page 22 Tuesday, May 25, 2004 10:30 AM
Phyaction U
4.5.3
1.
2.
3.
4.
5.
6.
7.
Read-out values for ultrasound therapy
Channel
Ultrasound therapy
Type of US head
Remaining treatment time
Îset
Ppk
Contact of the US head
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Contact of the US head
The contact of the US head with the skin:
•
: Bad contact, US head switched off (0 W).
•
: Bad contact.
•
: Sufficient contact.
•
: Good contact.
•
: Very good contact
Test the US head if its conduction is bad. See §5.1.1.
Îset (W/cm2)
The power (W) of the US head per cm2.
Ppk (W)
The peak power of the US head (Îset * ERA). The peak power delivered
therefore depends on the size of the US head and the contact with the skin.
This value is 0.0 W if the contact with the skin is bad. In this case, the
ultrasound treatment of the equipment is stopped to prevent overheating of
the transducer.
4.5.4
Parameters for ultrasound therapy
Treatment time (mm:ss)
The duration of the treatment.
Duty cycle (10, 20, 30, 40, 50%, continuous)
Ratio of the pulse duration to the period duration.
• Continuous: Continuous ultrasound (100%).
• 10, 20, 30, 40, 50%: Pulsating ultrasound.
Select a high duty cycle for an intensive treatment. Select a low duty cycle
for a mild treatment.
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