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ARDMS SPI EXAM 2026 100% PASS
ASSURED EXAMINATION SOLUTIONS
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. - correct 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 - correct answer- D) Quartered
Frequency increased from 3 MHz to 6 MHz, what
will happen to wavelength?
A) Doubled
B) Quadrupled
C) Halved
D) Quartered - correct answer- C) Halved
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Intensity is equal to:
A) power/area
B) propagation speed/frequency
C) density x propagation speed
D) area/power - correct answer- A) power/area
5. What is important when selecting a
transducer frequency?
A) Depth
B) Power
C) Velocity
D) Propagation speed - correct answer- A)
Depth
6. Frequency is a factor in:
A) impedance
B) tissue attenuation
C) propagation speed
D) tissue density - correct answer- B) tissue
attenuation
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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 - correct 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 - correct 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 - correct answer- B)
Impedance
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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 - correct 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 - correct answer- D)
Temporal resolution
12. Ultrasound frequency begins at:
A) 2 Hz
B) 20 Hz
C) 20 Mhz
D) 20 kHz - correct answer- D) 20 kHz
ARDMS SPI EXAM 2026 100% PASS
ASSURED EXAMINATION SOLUTIONS
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. - correct 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 - correct answer- D) Quartered
Frequency increased from 3 MHz to 6 MHz, what
will happen to wavelength?
A) Doubled
B) Quadrupled
C) Halved
D) Quartered - correct answer- C) Halved
,2 | Page
Intensity is equal to:
A) power/area
B) propagation speed/frequency
C) density x propagation speed
D) area/power - correct answer- A) power/area
5. What is important when selecting a
transducer frequency?
A) Depth
B) Power
C) Velocity
D) Propagation speed - correct answer- A)
Depth
6. Frequency is a factor in:
A) impedance
B) tissue attenuation
C) propagation speed
D) tissue density - correct answer- B) tissue
attenuation
,3 | Page
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 - correct 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 - correct 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 - correct answer- B)
Impedance
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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 - correct 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 - correct answer- D)
Temporal resolution
12. Ultrasound frequency begins at:
A) 2 Hz
B) 20 Hz
C) 20 Mhz
D) 20 kHz - correct answer- D) 20 kHz
