ARDMS SPI Exam 1 Questions with 100%
Correct Answers
When the direction of the wave propagation is parallel to the particle motion of the
medium, the wave being transmitted is called a:
A) surface wave.
B) longitudinal wave.
C) transverse wave.
D) non-linear sound.
B) longitudinal wave
If the sound beam attenuated 6 dB, what will happen to the overall intensity?
A) Quadrupled
B) Doubled
C) Halved
D) Quartered
D) Quartered
Frequency increased from 3 MHz to 6 MHz, what will happen to wavelength?
A) Doubled
B) Quadrupled
C) Halved
D) Quartered
C) Halved
Intensity is equal to:
A) power/area
,B) propagation speed/frequency
C) density x propagation speed
D) area/power
A) power/area
5. What is important when selecting a transducer frequency?
A) Depth
B) Power
C) Velocity
D) Propagation speed
A) Depth
6. Frequency is a factor in:
A) impedance
B) tissue attenuation
C) propagation speed
D) tissue density
B) tissue attenuation
7. Which medium interface will have the greatest sound transmission?
A) Soft tissue to water
B) Organ to organ
C) Bone to organ
D) Lung to soft tissue
B) Organ to organ
, 8. If there is a small impedance mismatch between two mediums, what will result?
A) There will be a small reflection
B) There will be a large reflection
C) All sound will transmit
D) No sound will transmit
A) There will be a small reflection
9. Which property of sound is measured in Rayls?
A) Intensity
B) Impedance
C) Density
D) Propagation speed
B) Impedance
10. If sound energy is reduced by 50%, how many decibels were lost?
A) 6 dB
B) 3 dB
C) 0 dB
D) 10 dB
B) 3 dB
11. To improve the quality of the motion during an electrocardiogram, which resolution
should be improved?
A) Transverse resolution
B) Lateral resolution
C) Axial resolution
D) Temporal resolution
Correct Answers
When the direction of the wave propagation is parallel to the particle motion of the
medium, the wave being transmitted is called a:
A) surface wave.
B) longitudinal wave.
C) transverse wave.
D) non-linear sound.
B) longitudinal wave
If the sound beam attenuated 6 dB, what will happen to the overall intensity?
A) Quadrupled
B) Doubled
C) Halved
D) Quartered
D) Quartered
Frequency increased from 3 MHz to 6 MHz, what will happen to wavelength?
A) Doubled
B) Quadrupled
C) Halved
D) Quartered
C) Halved
Intensity is equal to:
A) power/area
,B) propagation speed/frequency
C) density x propagation speed
D) area/power
A) power/area
5. What is important when selecting a transducer frequency?
A) Depth
B) Power
C) Velocity
D) Propagation speed
A) Depth
6. Frequency is a factor in:
A) impedance
B) tissue attenuation
C) propagation speed
D) tissue density
B) tissue attenuation
7. Which medium interface will have the greatest sound transmission?
A) Soft tissue to water
B) Organ to organ
C) Bone to organ
D) Lung to soft tissue
B) Organ to organ
, 8. If there is a small impedance mismatch between two mediums, what will result?
A) There will be a small reflection
B) There will be a large reflection
C) All sound will transmit
D) No sound will transmit
A) There will be a small reflection
9. Which property of sound is measured in Rayls?
A) Intensity
B) Impedance
C) Density
D) Propagation speed
B) Impedance
10. If sound energy is reduced by 50%, how many decibels were lost?
A) 6 dB
B) 3 dB
C) 0 dB
D) 10 dB
B) 3 dB
11. To improve the quality of the motion during an electrocardiogram, which resolution
should be improved?
A) Transverse resolution
B) Lateral resolution
C) Axial resolution
D) Temporal resolution
