17: Fundamentals of NM US Flashcards
1
Q
For nerve under U/S, what is dark within the nerve? What is bright?
A
Nerve fibers themselves;
Perineurium as well as the epineurium
2
Q
For muscle under U/S, what is dark and what is bright?
A
Connective tissue is bright (perimysium, epimysium); the muscle fibers themselves are dark
3
Q
Fibrocartilage is hyper/hypoechoic, and hyaline cartilage is hyper/hypoechoic?
A
Hyper;
hypo
4
Q
Tendon has high/low anisotropy, while nerve has high/low anisotropy
A
High;
low
5
Q
Besides bone, what can cause posterior acoustic shadowing?
A
Calcified lesions, surgical hardware, and foreign objects
6
Q
When does posterior acoustic enhancement most frequently occur?
A
Cystic structures
7
Q
When can reverberation artifact be seen?
A
Gas bubbles, crystalline deposits, staples, sutures, surgical clips
