L741 User Manual
4890-0063-01A
2-3
2.3 Acoustic power
Keep the power levels and the e xposure tim e as low as possible in
accordance with the ALARA principle, as lo ng as a satisfacto ry
diagnosis has been achieved.
User should be aware of various possible biological effects of the
ultrasound beam , espec ially the ther mal and m echanical effects on
human tissues and bones. E.g. for fe tal application, thermal effects on
embryo bone m ust be taken into cons ideration; thus in ad dition to
limit the scanning tim e and acoustic power, the TIB value should be
closely monitored during the scanning.
For acoustic output powers of the L741 transducer, refer to Chapter 6:
Acoustic Output Tables.
2.4 Environmental conditions
Operation Storage and
Transport
Relative
humidity
30%~75%, no
condensation
20%~90%, no
condensation
Ambient
temperature
10°C~40°C -20 °C~55°C
Barometric
pressure
700hPa~1060hPa 700hPa~1060hPa
Please also refer to the ultrasound system ’s operator’s manuals to
check the environm ental conditions for ope ration, storage and
transport of the ultrasound system.
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