ARDMS - SPI Exam questions and answers 2026 update 40 questions and answers

ARDMS - SPI Exam questions and
answers 2026 update
40 questions and answers

When the direction of the wave propagation is parallel to the particle motion
h, h, h, h, h, h, h, h, h, h, h, h,


of the medium, the wave being transmitted is called a:
h, h, h, h, h, h, h, h, h, h,




A) surface wave. h,




B) longitudinal wave. h,




C) transverse wave. h,




D) non-linear sound. - answer B) longitudinal wave
h, h, h, h , h, h,




If the sound beam attenuated 6 dB, what will happen to the overall intensity?
h, h, h, h, h, h, h, h, h, h, h, h, h,




A) Quadrupled
B) Doubled
C) Halved
D) Quartered - answer h, h, h , D) Quartered
h,




Frequency increased from 3 MHz to 6 MHz, what will happen to wavelength?
h, h, h, h, h, h, h, h, h, h, h, h,




A) Doubled
B) Quadrupled
C) Halved
D) Quartered - answer h, h, h , C) Halved
h,




Intensity is equal to: h, h, h,




A) power/area

,B) propagation speed/frequency h,




C) density x propagation speed
h, h, h,




D) area/power - answer A) power/area h, h, h , h,




5. What is important when selecting a transducer frequency?
h, h, h, h, h, h, h,




A) Depth
B) Power
C) Velocity
D) Propagation speed - answer A) Depth h, h, h, h , h,




6. Frequency is a factor in: h, h, h, h,




A) impedance
B) tissue attenuation
h,




C) propagation speed h,




D) tissue density - answer B) tissue attenuation
h, h, h, h , h, h,




7. Which medium interface will have the greatest sound transmission?
h, h, h, h, h, h, h, h,




A) Soft tissue to water
h, h, h,




B) Organ to organ h, h,




C) Bone to organ
h, h,




D) Lung to soft tissue - answer
h, h, h, h, h, h , B) Organ to organ
h, h, h,




8. If there is a small impedance mismatch between two mediums, what
h, h, h, h, h, h, h, h, h, h,


will result?
h, h,




A) There will be a small reflection
h, h, h, h, h,

, B) There will be a large reflection
h, h, h, h, h,




C) All sound will transmit
h, h, h,




D) No sound will transmit - answer A) There will be a small reflection
h, h, h, h, h, h , h, h, h, h, h, h,




9. Which property of sound is measured in Rayls?
h, h, h, h, h, h, h,




A) Intensity
B) Impedance
C) Density
D) Propagation speed - answer B) Impedance h, h, h, h , h,




10. If sound energy is reduced by 50%, how many decibels were lost?
h, h, h, h, h, h, h, h, h, h, h,




A) 6 dB
h,




B) 3 dB
h,




C) 0 dB
h,




D) 10 dB - answer
h, h, h, h , B) 3 dB h, h,




11. To improve the quality of the motion during an electrocardiogram,
h, h, h, h, h, h, h, h, h,


which resolution should be improved?
h, h, h, h, h,




A) Transverse resolution h,




B) Lateral resolution h,




C) Axial resolution h,




D) Temporal resolution - answer D) Temporal resolution
h, h, h, h , h, h,




12. Ultrasound frequency begins at: h, h, h,




A) 2 Hz
h,