SPI Board Practice Questions
Which of the following is described as the ability of an object to resist
compression and relates to the hardness of the medium?
a. Stiffness
b. Density
c. Pressure
d. Inertia - CORRECT ANSWER-a. Stiffness
An increase in pulse repetition frequency would lead to:
a. an increase in DF
b. an increase in pulse duration
c. an increase in the number of cycles
d. a decrease in resolution - CORRECT ANSWER-a. an increase in DF
? is this b/c PRP and PRF are reciprocals so if you increase PRF you decrease
PRP which has an inverse relationship to DF?
Which of the following would have the highest propagation speed?
a. Air
b. Bone
c. Soft tissue
d. Water - CORRECT ANSWER-b. Bone
Which of the following would be the lowest propagation speed?
a. Water
b. soft tissue
c. Bone
d. Lung Tissue - CORRECT ANSWER-D. Lung Tissue (Air)
As imaging depth increases, the pulse repetition frequency must:
a. not change
b. increase
c. decrease
d. pulse repetition frequency doe not relate to imaging depth - CORRECT
ANSWER-C. decrease
,Which of the following describes the amount of refraction that occurs at the
interface?
a. Bernoulli's Law
b. Posieuille's law
c. Law of reflection
d. Snells Law - CORRECT ANSWER-d. Snells law
Pressure is typically expressed in :
a. Frequency
b. Pascals
c. Decibels
d. Kilograms per centimeter cubed - CORRECT ANSWER-B. Pascals
The typical range of frequency for diagnostic ultrasound imaging is:
a. 20 to 20,0000 HZ
b. 1 to 20 MHZ
c. 10 to 20 MHZ
d. 12 to 100 MHZ - CORRECT ANSWER-B. 1 to 20 MHZ
actual 2-12MHZ
The attenuation coefficient in soft tissue is equal to :.
a. one half of the operating frequency
b. double the operating frequency
c. Frequency times path length
d. the total decibels - CORRECT ANSWER-a. one half the operating frequency
Micro denotes:
a. Millionth
b. Hundreth
c. Million
d. Billionth - CORRECT ANSWER-a. millionth
Which of the following is described as the distance over which one cycle occurs?
a. Pulse Duration
b. Duty Factor
c. Period
, d. Wavelength - CORRECT ANSWER-d. wavelength
All of the following are true about stiffness except;
a. it is defined as the ability of an object to resist compression
b. stiffness and propagation speed are indirectly associated
c. increasing stiffness increases propagation speed
d. stiffness may also be referred to as elasticity - CORRECT ANSWER-b -
stiffness and propagation speed are indirectly associated.
they are directly associated .you increase stiffness and your prop speed
increases
Areas of high pressure and density are referred to as :
a. Compressions
b. Rarefractions
c. Condensations
d. Rarefractions - CORRECT ANSWER-a . compressions
Spatial pulse length can be calculated by :
a. multiplying the # of cycles times the frequency
b. dividing the period by the frequency
c. multiplying the number of cycles times the wavelength
d. dividing the number of cycles by the wavelength - CORRECT ANSWER-c. # of
cycles x wavelength
Density is typically measured in :
a. Kg per centimeter cubed
b. millimeters
c. watts per centimeter squared
d. pascals - CORRECT ANSWER-a.Kg per centimeters cubed
As a sound wave travels through the human body, the intensity of the sound
wave decreases as a result of :
a. attenuation
b. absorption
c. scattering
d. all of the above - CORRECT ANSWER-d. all of the above
Which of the following is described as the ability of an object to resist
compression and relates to the hardness of the medium?
a. Stiffness
b. Density
c. Pressure
d. Inertia - CORRECT ANSWER-a. Stiffness
An increase in pulse repetition frequency would lead to:
a. an increase in DF
b. an increase in pulse duration
c. an increase in the number of cycles
d. a decrease in resolution - CORRECT ANSWER-a. an increase in DF
? is this b/c PRP and PRF are reciprocals so if you increase PRF you decrease
PRP which has an inverse relationship to DF?
Which of the following would have the highest propagation speed?
a. Air
b. Bone
c. Soft tissue
d. Water - CORRECT ANSWER-b. Bone
Which of the following would be the lowest propagation speed?
a. Water
b. soft tissue
c. Bone
d. Lung Tissue - CORRECT ANSWER-D. Lung Tissue (Air)
As imaging depth increases, the pulse repetition frequency must:
a. not change
b. increase
c. decrease
d. pulse repetition frequency doe not relate to imaging depth - CORRECT
ANSWER-C. decrease
,Which of the following describes the amount of refraction that occurs at the
interface?
a. Bernoulli's Law
b. Posieuille's law
c. Law of reflection
d. Snells Law - CORRECT ANSWER-d. Snells law
Pressure is typically expressed in :
a. Frequency
b. Pascals
c. Decibels
d. Kilograms per centimeter cubed - CORRECT ANSWER-B. Pascals
The typical range of frequency for diagnostic ultrasound imaging is:
a. 20 to 20,0000 HZ
b. 1 to 20 MHZ
c. 10 to 20 MHZ
d. 12 to 100 MHZ - CORRECT ANSWER-B. 1 to 20 MHZ
actual 2-12MHZ
The attenuation coefficient in soft tissue is equal to :.
a. one half of the operating frequency
b. double the operating frequency
c. Frequency times path length
d. the total decibels - CORRECT ANSWER-a. one half the operating frequency
Micro denotes:
a. Millionth
b. Hundreth
c. Million
d. Billionth - CORRECT ANSWER-a. millionth
Which of the following is described as the distance over which one cycle occurs?
a. Pulse Duration
b. Duty Factor
c. Period
, d. Wavelength - CORRECT ANSWER-d. wavelength
All of the following are true about stiffness except;
a. it is defined as the ability of an object to resist compression
b. stiffness and propagation speed are indirectly associated
c. increasing stiffness increases propagation speed
d. stiffness may also be referred to as elasticity - CORRECT ANSWER-b -
stiffness and propagation speed are indirectly associated.
they are directly associated .you increase stiffness and your prop speed
increases
Areas of high pressure and density are referred to as :
a. Compressions
b. Rarefractions
c. Condensations
d. Rarefractions - CORRECT ANSWER-a . compressions
Spatial pulse length can be calculated by :
a. multiplying the # of cycles times the frequency
b. dividing the period by the frequency
c. multiplying the number of cycles times the wavelength
d. dividing the number of cycles by the wavelength - CORRECT ANSWER-c. # of
cycles x wavelength
Density is typically measured in :
a. Kg per centimeter cubed
b. millimeters
c. watts per centimeter squared
d. pascals - CORRECT ANSWER-a.Kg per centimeters cubed
As a sound wave travels through the human body, the intensity of the sound
wave decreases as a result of :
a. attenuation
b. absorption
c. scattering
d. all of the above - CORRECT ANSWER-d. all of the above
