S2/S2BW
Digital Color Doppler Ultrasound System
2.4 Adverse Effects and Precautions
This ultrasound system, same as all other diagnostic ultrasound system in the market, should be used only
for clinically appropriate reasons, for the shorteds period of time and at power settings as low as reasonably
achievable (ALARA).
The American Institute of Ultrasound in Medicine (AIUM) principle of As Low As Reasonably Achievable
(ALARA) is recommended during selection of the output of ultrasound power. Try not to aim probe at the
smae spot in tissue for a long period of time unless it is necessary for diagnostic purpose.
This system, as a basic imaging system with the Doppler and Color Doppler feature generates acoustic power
that is below pre-enactment levels, which are generally considered to be safe for the respective applications.
2.5 Scanning Patients and Education
The Track-3 or IEC60601-2-37 output display standard allows users to share the responsibility for the safe
use of this ultrasound system. Follow these usage guidelines for safe operation:
• In order to maintain proper cleanliness of the transducers, always clean them between patients.
• Always use a new disinfected sheath on all EV/ER probes during every exam.
•
Continuously move the probe, rather than staying in a single spot, to avoid elevated temperatures in
one part of the patient’s body.
• Move probe away from the patient when not actively scanning.
•
Understand the meaning of the TI, TIS, TIB, TIC, and MI output display, as well as the relationship
between these parameters and the thermal/cavitation bioeffect to the tissue.
•
Expose the patient to only the very lowest practical transmit power levels for the shortest possible time
to achieve a satisfactory diagnosis (ALARA - As Low As Reasonably Achievable).
2.5.1 Safe Scanning Guideline
1. Ultrasound should only be used for medical diagnosis and only by trained medical personnel.
2.
Diagnostic ultrasound procedures should be done only by personnel fully trained in the use of the
equipment, in the interpretation of the results and images, and in the safe use of ultrasound (including
education as to potential hazards).
3.
Operators should understand the likely influence of the machine controls, the operating mode (e.g.
B-mode, color Doppler imaging or spectral Doppler) and probe frequency on thermal and cavitation
hazards.
4.
Select a low setting for each new patient. Output should only be increased during the examination if
penetration is still required to achieve a satisfactory result, and after the Gain control has been moved
to its maximum value.
5. Maintain the shortest examination time necessary to produce a useful diagnostic result.
6.
Do not hold the probe in a fixed position for any longer than is necessary. It should be removed from
the patient whenever there is no need for real-time imaging or spectral Doppler acquisition. The freeze
frame and Cine loop capabilities allow images to be reviewed and discussed without exposing the
patient to continuous scanning.
P/N: 4710.00149A01
2-3
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