Bioeffects/Safety

Question 1

HIPAA

Answer 1

Health Insurance Portability + Accountability Act

Question 2

PHI

Answer 2

Protected Health Information

Question 3

When scanning with PW Doppler, does the PRF affect the acoustic exposure?

Answer 3

Yes. Because the duty factor is affected. Affects the SPTA intensity

Question 4

What is it called when the motion of particles in a fluid is sometimes observed in an intense sound beam?

Answer 4

Acoustic Streaming

Question 5

When the thermal index is greater than 1, would the increase in temperature be greater in lung, liver, bone or bladder?

Answer 5

Bone

Question 6

A hydrophone is also known as

Answer 6

microphobe

Question 7

A hydrophone measures:

Answer 7

acoustic output

pressure amplitude + duty factor

Question 8

SPPA + SAPA don’t apply to CW ultrasound. T/F

Answer 8

True

Question 9

Tissue equivalent phantoms are made of? Why? (2)

Answer 9

Graphite and/or Urethane rubber materials

attenuation in these material is similar to those in soft tissue. 1.54mm/us in gels and 1.45mm/us in rubber