Ultrasound Deck 1 Flashcards
1
Q
Humans hear from _ hz to _ hz
A
20, 20000
2
Q
Humans are most sensitive to frequencies between _ and _ hz
A
1000 to 3000
3
Q
High frequency sound waves destroy __
A
Tissue
4
Q
The lowest intensity ultrasound is used to ___
A
View internal organs
5
Q
Sound waves need to be carried by a __, __, or __
A
Solid, liquid, or gas
6
Q
Sound waves travel at different speeds depending on the density of the __
A
Medium that it travels through
7
Q
Speed of ultrasound through air __
A
320
8
Q
Speed of ultrasound through soft tissue
A
1540
9
Q
Speed of ultrasound through bone
A
4080
10
Q
Ultrasound velocity is __ related to acoustical impedance
A
Inversely
11
Q
Acoustical impedance is proportional to the speed at which ultrasound waves travel in a given __
A
Medium
