Specific Tissues

Question 1

Attenuation

Answer 1

Absorbtion

Question 2

When sound waves are absorbed, what is released

Answer 2

Heat

Question 3

Sound waves with increased frequency have _____________ absorption and ______________ depth/ penetration

Answer 3

Increased absorption
Decreased depth/ penetration
(Photons are the opposite)

Question 4

Sound waves with decreased frequency have ___________ absorption and _____________ depth/ penetration

Answer 4

Decreased absorption
Increased depth/ penetration
(for thicker patients)

Question 5

The thicker your patient is, the __________ your wavelength needs to be (____________ frequency) for tissue interfaces

Answer 5

Longer wavelength
Lower frequency

Question 6

Tissue interfaces

Answer 6

Creates scatter/ reflection

Question 7

We need ultrasound gel bc air does what to ultrasound waves

Answer 7

Air scatters sound creating no images (lungs and gas in GI)

Question 8

Bone has no ___________ of sound waves, creating ____________ beyond them

Answer 8

No penetration
Shadows beyond

Question 9

Echogenicity

Answer 9

Level of brightness

Question 10

Sound waves have excellent transmission thru ___________ which causes more sound wave ____________ to the transducer once they hit tissues beyond the water

Answer 10

Water
Reflection