ARDMS SPI Exam 2025–2026 sonography Principles &
Instrumentation ultrasound physics Accurate Real Exam
This document features the latest real exam questions and verified correct
answers for the ARDMS Sonography Principles & Instrumentation (SPI) Exam,
valid for the 2025–2026 testing period. It covers critical topics such as
ultrasound physics, Doppler principles, image artifacts, instrumentation, and
safety standards. A valuable resource for sonography students and
professionals preparing for ARDMS certification
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. - <<answer>>>..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 - <<answer>>>..D) Quartered
Frequency increased from 3 MHz to 6 MHz, what will happen to
wavelength?
,A) Doubled
B) Quadrupled
C) Halved
D) Quartered - <<answer>>>..C) Halved
Intensity is equal to:
A) power/area
B) propagation speed/frequency
C) density x propagation speed
D) area/power - <<answer>>>..A) power/area
5. What is important when selecting a transducer frequency?
A) Depth
B) Power
C) Velocity
D) Propagation speed - <<answer>>>..A) Depth
6. Frequency is a factor in:
A) impedance
B) tissue attenuation
C) propagation speed
D) tissue density - <<answer>>>..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 - <<answer>>>..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 - <<answer>>>..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 - <<answer>>>..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 - <<answer>>>..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 - <<answer>>>..D) Temporal
resolution
12. Ultrasound frequency begins at:
A) 2 Hz
Instrumentation ultrasound physics Accurate Real Exam
This document features the latest real exam questions and verified correct
answers for the ARDMS Sonography Principles & Instrumentation (SPI) Exam,
valid for the 2025–2026 testing period. It covers critical topics such as
ultrasound physics, Doppler principles, image artifacts, instrumentation, and
safety standards. A valuable resource for sonography students and
professionals preparing for ARDMS certification
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. - <<answer>>>..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 - <<answer>>>..D) Quartered
Frequency increased from 3 MHz to 6 MHz, what will happen to
wavelength?
,A) Doubled
B) Quadrupled
C) Halved
D) Quartered - <<answer>>>..C) Halved
Intensity is equal to:
A) power/area
B) propagation speed/frequency
C) density x propagation speed
D) area/power - <<answer>>>..A) power/area
5. What is important when selecting a transducer frequency?
A) Depth
B) Power
C) Velocity
D) Propagation speed - <<answer>>>..A) Depth
6. Frequency is a factor in:
A) impedance
B) tissue attenuation
C) propagation speed
D) tissue density - <<answer>>>..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 - <<answer>>>..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 - <<answer>>>..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 - <<answer>>>..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 - <<answer>>>..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 - <<answer>>>..D) Temporal
resolution
12. Ultrasound frequency begins at:
A) 2 Hz
