Question 1

The output of some currently available diagnostic ultrasound devices can generate levels that produce hemorrhage in the lungs of laboratory animals.

Accepted Answer

A) True 
 B)False

Question 2

Bioeffects are useful in therapeutic applications of ultrasound.

Accepted Answer

A) True 
 B)False

Question 3

Bioeffects have not been observed in experimental animals with focused intensities below ________.

Accepted Answer

A)  1 mW/cm2 spatial peak-temporal average (SPT
A)  
B)  10 mW/cm2 SPTA 
C)  1 mW/cm2 spatial peak-temporal peak (SPTP) 
D)  10 mW/cm2 SPTP

Question 4

The American Institute of Ultrasound in Medicine (AIUM) strongly discourages nonmedical use of ultrasound.

Accepted Answer

A) True 
 B)False

Question 5

For exposure duration up to fifty hours,there have been no significant adverse biological effects observed from temperature increases £ 2 °C above normal.

Accepted Answer

A) True 
 B)False

Question 6

Plant studies are useful primarily for ________.

Accepted Answer

A)  identifying focal lesion production 
B)  understanding cavitational effects in living tissue 
C)  determining conditions under which thermal effects occur 
D)  determining conditions under which nonthermal effects occur

Question 7

Ultrasound produces a temperature increase as it propagates through tissues.

Accepted Answer

A) True 
 B)False

Question 8

Attenuation in soft tissue is due primarily to ________.

Accepted Answer

A)  refraction 
B)  absorption 
C)  reflection 
D)  transmission

Question 9

Doppler test objects and flow phantoms are not able to evaluate gate location.

Accepted Answer

A) True 
 B)False

Question 10

A significant increase in the temperature of tissues close to the transducer is a result of ________.

Accepted Answer

A)  transducer self-heating 
B)  warm coupling medium 
C)  thickness of the element 
D)  propagation speed of the element

Exam 7: Performance and Safety

The output of some currently available diagnostic ultrasound devices can generate levels that produce hemorrhage in the lungs of laboratory animals.

Bioeffects are useful in therapeutic applications of ultrasound.

Bioeffects have not been observed in experimental animals with focused intensities below ________.

The American Institute of Ultrasound in Medicine (AIUM) strongly discourages nonmedical use of ultrasound.

For exposure duration up to fifty hours,there have been no significant adverse biological effects observed from temperature increases £ 2 °C above normal.

Plant studies are useful primarily for ________.

Ultrasound produces a temperature increase as it propagates through tissues.

Attenuation in soft tissue is due primarily to ________.

Doppler test objects and flow phantoms are not able to evaluate gate location.

A significant increase in the temperature of tissues close to the transducer is a result of ________.