Ultrasound Safety Considerations And Data - Huntleigh sonicaidONE Guide De L'utilisateur

SonicaidOne User Guide
Ultrasound specification
Transmitter
Receiver
Probe

Ultrasound safety considerations and data

General
Diagnostic ultrasound has been in use for over 35 years with no confirmed
adverse effects on patients or operators at the intensities typical of present
diagnostic instruments. However, available data are not wholly conclusive, and
the possibility that biological effects may be identified in the future remains. It
is therefore deemed desirable by medical and scientific authorities that
exposure to ultrasound be limited to the duration and intensity appropriate for
the clinical objective. Because fetal tissue could be more sensitive to biological
effects by reason of rapid cell division, it is particularly desirable that ultrasound
exposure of pregnant subjects be kept to a minimum.
At present, there is a clear consensus that the benefits to patients of prudent
use of diagnostic ultrasound outweigh the risks, if any, that may be present.
See:
a) Report No. 24, National Council on Radiation and Protection: Biological
Effects Of Ultrasound, Clinical Effects And Observations.
b) Ziskin M.C. in: World Policies on the Use of Diagnostic Ultrasound in
Obstetrics: The American Institute of Ultrasound Policy and Statement on
Safety. Ultrasound in Medicine and Biology 12: 711-714, 1986.
Description of the ultrasound signal
Operating mode
Frequency
Intended use
Intended for fetal use
Control settings
Frequency: fixed frequency at 2.0 MHz
Audio bandwidth at headset
output: 350Hz to 1.0kHz –6db typical
Beam width: (-6dbs) between 20 and
40mm at depths of 4 to 16cm
Continuous wave
Doppler
2MHz
Fetal heartbeat detection
Yes
None
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