MEDA MD-6000P - Annex A. Conservation Concept Declaration; Declaration; Alara

Annex A. Conservation Concept Declaration
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Annex A. Conservation Concept Declaration
A.1 Declaration
The biological effect of ultrasound may be evidenced in future, albeit no evidence on this currently
exists. Although MD-6000 itself produces ultrasound of low level, we have to bear the concept of
using lowest level of ultrasound that could bring clinic data needed, and use the shortest time as
reasonably as possible.
A.2 ALARA
Principle of ALARA (As Low As Reasonably Achievable) should be used in a ultrasound diagnosis.
On the premise of diagnostic data, please use lowest level of ultrasound and shortest time, while
the energy amount of ultrasound is decided by the output intensity and diagnostic time. And this
level and time may vary with different patients.
Not all diagnosis could be achieved through the lowest level and shortest time, which may result in
a image of low quality or dismal signal and bring problems to accuracy of diagnosis. But higher
level than really needed won't help anything on the diagnosis while it only brings more risk of
biological effect.
Operators are responsible for patients' safe and supposed to apply ultrasound level according to
the principle of ALARA.