Echoes

Question 1

Bc sound waves transmit excellently thru water, there is little _______________ causing ____________ _____________ (white) beyond the structure

Answer 1

Attenuation
Acoustic enhancement

Question 2

Why are soft tissue reflections variable

Answer 2

Different attenuation and impedance

Question 3

Echogenic/ echogenicity

Answer 3

Produces echos (level of brightness)

Question 4

Anechoic definition and example

Answer 4

No echos returning to transducer (black)
Water/ bladder

Question 5

Hypoechoic

Answer 5

Few echos returning to transducer (dark)

Question 6

Hyperechoic

Answer 6

Many echos returning to transducer (white)

Question 7

Isoechoic (spleen and liver)

Answer 7

Same echogenicity (level of brightness)

Question 8

What are the five display modes of ultrasonography

Answer 8

1. A mode (amplitude)
2. B mode (Brightness)
3. M mode (motion)
4. MPR
5. 3D

Question 9

What is display mode A (amplitude) used for

Answer 9

Hog fat and echoencephalography

Question 10

What is display mode B (brightness) used for

Answer 10

General US in real time (dots on screen)