Ch 12 - Ultrasound Flashcards
What is Echogenicity?
Ability of a structure to reflect sound waves and produce echoes
Describe Hyperechoic.
Structure highly reflects sound and is brighter than the surrounding tissues (white)
Describe Hyoechoic.
Structure shows a low sound reflective pattern and is darker than surrounding tissues (dark grey)
Describe Isoechoic.
Structure has the same echogenicity as the surrounding tissues (light grey)
Describe Anoechoic.
No sound reflection (black)
What are four main tissue types to image in the body?
Bone
Fluid
Tissue
Gas
What is Anisotropy?
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.