Exam

Question 1

Sensitivity

Answer 1

True +/ all diseased

Are we catching it?

Question 2

Specificity

Answer 2

True -/ all no disease

Are we ruling it out

Question 3

Government uses what wave combo

Answer 3

SPTA

SPATIAL PEAK TEMPORAL AVERAGE

Question 4

Maximum prescribed intensity with units

Answer 4

720 mW/cm2

Question 5

TIB

Answer 5

<1.5

Question 6

AIUM MI

Answer 6

<1.9

Question 7

Peak refractional pressure is proportional or inverse to MI

Answer 7

Porpotional

Question 8

Freq is proportional or inverse to MI

Answer 8

Inverse

Lower freq have higher MI

Question 9

Typical frame rate for b mode imaging

Answer 9

10-50Hz

Question 10

1. What is cavitation?

Answer 10

“production & behavior of bubbles in fluid

Question 11

What can stable cavitation cause

Answer 11

streaming of surrounding liquid resulting in shear stress on suspended cells or intracellular organelles

Question 12

What can transient cavitation cause

Answer 12

pressure discontinuity, localized extreme high temperature and light emission

Question 13

16. What is the focused output intensity most commonly used (by AIUM standards

Answer 13

1W/cm2

Question 14

What is the unfocused output intensity most commonly used (by AIUM standards)?

Answer 14

100mW/cm2