Human hearing range is 20Hz – 20kHz
Cat hearing range is 48Hz – 85KHz
Bat hearing 1
Medical diagnostic ultrasound 1,000,000-11,000,000 Hz or 1–11MHz
An ultrasound machine consists of: a transducer (or probe), piezoelectric elements (better known as crystals), an imaging unit (computer or platform), and a display screen(LCD)
Transducers are individually designed to image a range of depth and anatomy and are assigned different frequencies to do so effectively
To image breast tissue, use transducer with 9-12MHz range
To image a1st trimester fetus, use transducer with 5-9MHz range
To image adult liver and kidney, use transducer with 2-5Mhz range
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This educational activity may contain discussion of published and/or investigational uses of agents that are not indicated by the FDA. The planners of this activity do not recommend the use of any agent outside of the labeled indications.
The opinions expressed in the educational activity are those of the faculty and do not necessarily represent the views of the planners. Please refer to the official prescribing information for each product for discussion of approved indications, contraindications, and warnings.
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presented in this activity is not meant to serve as a guideline for patient management. Any procedures, medications, or other courses of diagnosis or treatment discussed or suggested in this activity should not be used by clinicians without evaluation of their patient’s conditions and possible contraindications and/or dangers in use, review of any applicable manufacturer’s product information, and comparison with recommendations of other authorities.