Essential ultrasound physics concepts every sonographer must know
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It travels through tissue by compressions and rarefactions.
It requires a medium to propagate.
As one increases, the other decreases.
Use high frequency for superficial imaging.
It's not adjustable by the sonographer.
This constant powers distance calculations.
Higher frequencies lose energy faster as they travel.
And all are adjustable by the sonographer.
Shorter SPL = sharper axial resolution.
Deeper imaging = lower PRF.
Continuous wave = 100%, pulsed wave < 1%.
Mismatch causes reflection at tissue boundaries.
Occurs when in-phase waves combine.
Occurs when out-of-phase waves cancel each other.
For every 13 ΞΌs of go-return time, the reflector is 1 cm deeper.
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