Intro and Shadowing
"Tricks of physics"
- Identify pathology
- Avoid pitfalls
- Optimize image
Ultrasound beam encounters a “stiff” object
- Shadowing is necessary
- If no shadow consider polyp, sludge
- Increased brightness in far field when passing trough fluid
- Adjust gain
- Adjust time-gain-compensation (TGC)
- Or “i-scan”
- Can help identify abscess, particular when pus is more isoechoic
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