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(3) Default setting for acoustic power
High
*2
*1
Acoustic
power
level
Default
conditions
Low
20.5 Output Display
This system displays thermal and mechanical indices in real-time. The display
conforms to IEC60601-2-37 (2001), IEC60601-2-37 Amd. 1 (2004), IEC60601-2-37
Amd. 2 (2005), "Particular requirements for the safety of ultrasonic medical diagnostic
and monitoring equipment."
The display is intended to give the user information related to the likelihood of bioeffects
from tissue/bone heating (TI) and cavitation (MI). The user should practice ALARA (As
Low As Reasonably Achievable) with respect to these indices.
The maximum acoustic intensity with any transducer/system combination will remain
below the FDA (Federal Food and Drug Administration) limit of 720 mW/cm
either 1.9 MI or 190 W/cm
For additional information on bioeffects beyond that contained in this labeling, contact
your Toshiba representative. As further information becomes available on the potential
for bioeffects, these displays may change.
NOTE:
This system automatically returns to the
preset default values whenever changes
are made to the (*1) POWER ON,
TRANSDUCER connector selection,
NEW PATIENT, or PRESET values in the
application menu. In the default status,
the acoustic output power is limited below
preset values. Following the ALARA
restrictions, the user is allowed to
increase the acoustic power by turning
the (*2) ACOUSTIC POWER knob
clockwise under Track3 limits and to save
it to user definable presets.
2
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sppa
No. 2B730-973EN*D
20-5
2
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