Siemens Acuson S2000, Instructions For Use Manual

Page: 182 / 518

6 Transesophageal T ransducer
6 - 28 Instructions for Use
Managing the Lens Surface Temperature (V7M)
You can reduce the acoustic output to lower the lens surface temperature.
See also: Imaging Functions that Change Acoustic Output, Safety and Care, Chapter 2, Instructions
for Use
To reduce the acoustic output:

Lower the transmit power.

Change the scanning mode.
Follow the instructions included in the on-screen messages if the lens surface temperature
approaches, reaches, or exceeds the thermal limit.
Message Displays When Recommended Action
Thermal Limit
Near thermal limit.
Advise lower output
setting.
The lens surface
temperature
approaches 40°C .
1. Click Close to remove the message.
2. Reduce the acoustic output.
Note: If you are using the Normal patient temperature
setting for a hyperthermic patient, change the estimated
patient temperature setting to
Hyperthermic
to prevent the
system from prematurely reaching the thermal limit. Reselect
Normal if you determine the core temperature of the patient
has returned to 37.9°C or less.
Thermal Limit
At thermal limit.
Acoustic output
setting reduced.
System frozen. Press
Override to continue.
The lens surface
temperature reaches
41°C (the thermal limit).

Click Override .
Note: If you are using the Normal patient temperature
setting for a hyperthermic patient, change the estimated
patient temperature setting to Hyperthermic to prevent the
system from prematurely reaching the thermal limit. Reselect
Normal if you determine the core temperature of the patient
has returned to 37.9°C or less.
Thermal Limit
Maximum thermal limit
exceeded. Disconnect
transducer to
continue. For more
instructions, see
user's manual.
The lens surface
temperature reaches
43°C (the maximum
thermal limit is exceeded).
Note: When the lens surface temperature reaches 43°C, the
system stops imaging and turns off the transmitted power to
the transducer.
1. Click
Close
to remove the message.
2. Disconnect the transducer.
3. Reconnect the transducer after the transducer has
cooled. Or, use a different transducer.
Note:
If the original transducer is left in place, it will not be
operable until the lens surface of the transducer array has
cooled sufficiently (typically less than one minute).