Acoustic Output Description; Biological Effect; Caution Use Declaration; Alara Principle(As Low As Reasonably Achievable) - Youkey Q7 Instructions For Use Manual

9 Acoustic output description

The contents of this chapter for the entire system (including main unit , probe, accessories and
peripherals), in order to provide relevant information to the operator output sound and how to use
ALARA control principle of irradiation time and other important safety information. In addition,
this chapter also includes information related to the system of acoustic output real-time display.
Please read this chapter carefully before use.

9.1 biological effect

It is generally believed that the diagnosis with ultrasound is safe. So far, there is no any reports about
ultrasonic cause bodily injury.
In spite of this, we can not arbitrarily believe all the ultrasonic is absolutely safe. Studies have shown
that ultrasound with high intensity is harmful to human body.
In recent years, with the rapid development of ultrasound technology, people are increasingly
concerned about the application of ultrasonic technique in diagnosis and may lead to the potential
risk of biological effect.

9.2 Caution use declaration

Although there is no confirmation of diagnosis by ultrasonic instrument can cause the patient to
produce biological effect, but there are still likely to prove the biological effects of existing
applications in the future. So we must be careful to use ultrasound, exert their clinical effect in the
premise to obtain the necessary clinical information, avoid long time using high intensity ultrasound
the.
9.3 ALARA principle(As Low As
Reasonably Achievable)
ALARA is the guiding principle for the use of diagnostic ultrasound. Sonographers and other
qualified ultrasound users, using good judgment and insight, determine the exposure that is "as
low as reasonably achievable." There are no set rules to determine the correct exposure for every
situation.
The qualified ultrasound user determines the most appropriate way to keep exposure low and
bioeffects to a minimum, while obtaining a diagnostic examination.
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