Sonography Principles &
Instrumentation Examination (ARDMS
SPI) | Latest Update 2026/2027 |
Complete Practice Exam Paper with 110
Questions and Verified Answers |
Guaranteed Pass | Already Graded A+!!!!!
Related -CORRECTANSWER Associated or connected
Unrelated -CORRECTANSWER Not associated or connected
Directly Related or Proportional -CORRECTANSWER 2 or more items associated AND
connected; (1 item ↑, the other ↑)
Intensity -CORRECTANSWER Intensity is proportional to Power. Intensity AND Power
are proportional to Amplitude2
Inversely Related -CORRECTANSWER 2 or more items associated AND connected; (1
item ↑, the other ↓)
Period & Frequency -CORRECTANSWER Period & Frequency are inversely related.
Period ↑ Frequency ↓
,Reciprocal -CORRECTANSWER 2 numbers multiplied (ｘ) the result (=) is one (↿)
*Reciprocals are also inversely related; 1 item ↑, the other ↓*
Sound Waves -CORRECTANSWER All waves carry energy from one location to
another. Sound is a mechanical wave
Medium for Sound -CORRECTANSWER Sound cannot travel through vacuum; MUST
travel through a medium
Sound Wave Direction -CORRECTANSWER Sound travels in a straight line
Longitudinal Waves -CORRECTANSWER Sound waves are longitudinal
Acoustic Waves -CORRECTANSWER Sound waves are also referred to as acoustic
waves
Acoustic Variables -CORRECTANSWER [ Pressure, Density, & Distance ] Used to
distinguish between sound waves and other types of waves
Pressure -CORRECTANSWER Concentration of force in an area measured in Pascals
(Pa)
Density -CORRECTANSWER Concentration of mass in a volume measured in kg/cm3
,Distance (particle motion) -CORRECTANSWER Measure of particle motion measured
in cm, ft, mile
Acoustic Parameters -CORRECTANSWER There are seven acoustic parameters
Period -CORRECTANSWER Time from the start of one cycle, to the start of the next
cycle measured in microseconds (μs)
Frequency -CORRECTANSWER Number of cycles that occurs in 1 second measured
in Hertz (Hz) 'per second'
Amplitude -CORRECTANSWER Difference between the minimum value & the average
value of the acoustic variable
Power -CORRECTANSWER Rate of energy transfer measured in Watts (W)
Wavelength -CORRECTANSWER Distance or length of one complete cycle measured
in mm, meters, any unit of length
Propagation Speed -CORRECTANSWER Rate at which a sound wave travels through
a medium measured in m/s, mm/μs
, Wavelength Formula -CORRECTANSWER wavelength = 1.54 mm/μs
Sound Speed Order -CORRECTANSWER Sound travels fastest in solids, slower in
liquids, & slowest in gases. Order from fastest →slowest: Bone →Tendon →Muscle
→Blood →Liver
Stiffness -CORRECTANSWER Ability of an object to resist compression
Density & Speed Relationship -CORRECTANSWER Density & speed are inversely
related
Bulk Modulus -CORRECTANSWER Bulk Modulus is the same as stiffness
Speed Determinants -CORRECTANSWER Speed is determined by the density &
stiffness of the medium
Speed Increase with Stiffness -CORRECTANSWER If stiffness increases ↑, speed
increases ↑
Speed Decrease with Density -CORRECTANSWER If density increases ↑, speed
decreases ↓
Speed Formula -CORRECTANSWER Speed = Frequency (Hz) x Wavelength (m)
Instrumentation Examination (ARDMS
SPI) | Latest Update 2026/2027 |
Complete Practice Exam Paper with 110
Questions and Verified Answers |
Guaranteed Pass | Already Graded A+!!!!!
Related -CORRECTANSWER Associated or connected
Unrelated -CORRECTANSWER Not associated or connected
Directly Related or Proportional -CORRECTANSWER 2 or more items associated AND
connected; (1 item ↑, the other ↑)
Intensity -CORRECTANSWER Intensity is proportional to Power. Intensity AND Power
are proportional to Amplitude2
Inversely Related -CORRECTANSWER 2 or more items associated AND connected; (1
item ↑, the other ↓)
Period & Frequency -CORRECTANSWER Period & Frequency are inversely related.
Period ↑ Frequency ↓
,Reciprocal -CORRECTANSWER 2 numbers multiplied (ｘ) the result (=) is one (↿)
*Reciprocals are also inversely related; 1 item ↑, the other ↓*
Sound Waves -CORRECTANSWER All waves carry energy from one location to
another. Sound is a mechanical wave
Medium for Sound -CORRECTANSWER Sound cannot travel through vacuum; MUST
travel through a medium
Sound Wave Direction -CORRECTANSWER Sound travels in a straight line
Longitudinal Waves -CORRECTANSWER Sound waves are longitudinal
Acoustic Waves -CORRECTANSWER Sound waves are also referred to as acoustic
waves
Acoustic Variables -CORRECTANSWER [ Pressure, Density, & Distance ] Used to
distinguish between sound waves and other types of waves
Pressure -CORRECTANSWER Concentration of force in an area measured in Pascals
(Pa)
Density -CORRECTANSWER Concentration of mass in a volume measured in kg/cm3
,Distance (particle motion) -CORRECTANSWER Measure of particle motion measured
in cm, ft, mile
Acoustic Parameters -CORRECTANSWER There are seven acoustic parameters
Period -CORRECTANSWER Time from the start of one cycle, to the start of the next
cycle measured in microseconds (μs)
Frequency -CORRECTANSWER Number of cycles that occurs in 1 second measured
in Hertz (Hz) 'per second'
Amplitude -CORRECTANSWER Difference between the minimum value & the average
value of the acoustic variable
Power -CORRECTANSWER Rate of energy transfer measured in Watts (W)
Wavelength -CORRECTANSWER Distance or length of one complete cycle measured
in mm, meters, any unit of length
Propagation Speed -CORRECTANSWER Rate at which a sound wave travels through
a medium measured in m/s, mm/μs
, Wavelength Formula -CORRECTANSWER wavelength = 1.54 mm/μs
Sound Speed Order -CORRECTANSWER Sound travels fastest in solids, slower in
liquids, & slowest in gases. Order from fastest →slowest: Bone →Tendon →Muscle
→Blood →Liver
Stiffness -CORRECTANSWER Ability of an object to resist compression
Density & Speed Relationship -CORRECTANSWER Density & speed are inversely
related
Bulk Modulus -CORRECTANSWER Bulk Modulus is the same as stiffness
Speed Determinants -CORRECTANSWER Speed is determined by the density &
stiffness of the medium
Speed Increase with Stiffness -CORRECTANSWER If stiffness increases ↑, speed
increases ↑
Speed Decrease with Density -CORRECTANSWER If density increases ↑, speed
decreases ↓
Speed Formula -CORRECTANSWER Speed = Frequency (Hz) x Wavelength (m)
