Ch 12 - Ultrasound Flashcards
1
Q
What is Echogenicity?
A
Ability of a structure to reflect sound waves and produce echoes
2
Q
Describe Hyperechoic.
A
Structure highly reflects sound and is brighter than the surrounding tissues (white)
3
Q
Describe Hyoechoic.
A
Structure shows a low sound reflective pattern and is darker than surrounding tissues (dark grey)
4
Q
Describe Isoechoic.
A
Structure has the same echogenicity as the surrounding tissues (light grey)
5
Q
Describe Anoechoic.
A
No sound reflection (black)
6
Q
What are four main tissue types to image in the body?
A
Bone
Fluid
Tissue
Gas
7
Q
What is Anisotropy?
A
Tendon will typically appear hyperechoic when the beam of the transducer is perpendicular to the tendon. If the beam is angled obliquely, the tendon can appear hypoechoic.
