A middle aged woman presented with vague abdominal pain. No other significant features on history. An ultrasound was performed and the images of the upper abdomen (transverse) are shown.
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What to Know
- Understand basic ultrasound physics and define Piezoelectric effect, Frequency, Resolution, Attenuation, Echogenicity and Doppler.
- Apply this understanding to machine function and become proficient in knobology. Specifically obtain optimal images by selecting the proper probe, adjusting Image Mode, Gain, Time gain compensation, and Focus.
- Recognize ultrasound artifacts and their role in image acquisition including Reverberation, Side lobe, Mirror, Shadowing, Enhancement and Ring-down.
What to Read: Introduction to Bedside Ultrasound
Chapter 8: Physics
Where to Learn More
US Podcasts
Back to the Basics: Mike Stone's US Physics 1/16/2014Back to the Basics: Mike Stone's Image Artifacts 1/21/2014
ACEP US Section Resources
ACEP Sonoguide Physics Page by Beatrice Hoffmann, Heather Rumsey, and Matt Nixon
ACEP Physics Test by Mike Stone and Rob Blankenship et al.
SAEM Academy of EUS Resources
Ultrasound Physics and Machinery by Resa Lewiss
Emergency Ultrasound by Geoff Hayden
Physics Lecture
Key Articles
