SPI mock exam A20 Questions And Answers
What effect will increased hematocrit levels have on an arterial
duplex exam?
a. hematocrit levels do not affect a Doppler evaluation
b. decreased blood flow velocities
c. increased color flow display
d. decreased blood viscosity -
correct answer ✅b
Which of the following statements correctly describes annular
arrays?
a. an annular array can electronically focus the beam
b. an annular array can use phasing to electronically steer the beam
c. annular arrays provide the lowest slice thickness resolution
d. annular arrays usually contain 30 or more circular elements -
correct answer ✅a
The primary advantage of pulse wave Doppler is:
a. Allows for evaluation of flow at greater depths
b. absence of aliasing
c. absence of the Nyquist limit
,SPI mock exam A20 Questions And Answers
d. range resolution -
correct answer ✅d
What is the primary factor that determines the resistance
characteristics of the arterial signal displayed by PW Doppler?
a. branch number
b. vessel course and location
c. part it is supplying
d. origin of blood -
correct answer ✅c
Which of the following image controls is used to counteract beam
attenuation?
a. rejection
b. persistance
c. time gain compensation
d. compression -
correct answer ✅c
Which of the following will reduce the amount of color Doppler
information displayed on the image?
a. increased sample size
,SPI mock exam A20 Questions And Answers
b. increased packet size
c. increase probe frequency
d. increased sensitivity -
correct answer ✅a
Which o the following units is used to describe beam intensity?
a. dB
b. mW/cm^2
c. dB/cm/MHz
d. mW -
correct answer ✅b
The average speed of sound in soft tissue is:
a. 1580 m/s
b. 3300 m/s
c. 1540 m/s
d. 1540 cm/s -
correct answer ✅c
Which of the following correctly describes m-mode?
a. Uses a higher intensity beam than Doppler ultrasound
, SPI mock exam A20 Questions And Answers
b. Normally used with a sweep speed of 100 mm/s speed
c. Uses a very high sampling rate
d. Has better axial resolution than 2D imaging -
correct answer ✅c
Put the following media in order from lowest to highest according
to their acoustic impedance.
Bone
Air
Liver
Blood
a. Air, bone, liver, blood
b. Bone, liver, blood, air
c. Liver, bone, air, blood
d. Air, blood, liver, bone -
correct answer ✅d
Is the input power is 2 mW and the output power is 200 mW, what
is the gain?
a. 20dB
b. 10dB
What effect will increased hematocrit levels have on an arterial
duplex exam?
a. hematocrit levels do not affect a Doppler evaluation
b. decreased blood flow velocities
c. increased color flow display
d. decreased blood viscosity -
correct answer ✅b
Which of the following statements correctly describes annular
arrays?
a. an annular array can electronically focus the beam
b. an annular array can use phasing to electronically steer the beam
c. annular arrays provide the lowest slice thickness resolution
d. annular arrays usually contain 30 or more circular elements -
correct answer ✅a
The primary advantage of pulse wave Doppler is:
a. Allows for evaluation of flow at greater depths
b. absence of aliasing
c. absence of the Nyquist limit
,SPI mock exam A20 Questions And Answers
d. range resolution -
correct answer ✅d
What is the primary factor that determines the resistance
characteristics of the arterial signal displayed by PW Doppler?
a. branch number
b. vessel course and location
c. part it is supplying
d. origin of blood -
correct answer ✅c
Which of the following image controls is used to counteract beam
attenuation?
a. rejection
b. persistance
c. time gain compensation
d. compression -
correct answer ✅c
Which of the following will reduce the amount of color Doppler
information displayed on the image?
a. increased sample size
,SPI mock exam A20 Questions And Answers
b. increased packet size
c. increase probe frequency
d. increased sensitivity -
correct answer ✅a
Which o the following units is used to describe beam intensity?
a. dB
b. mW/cm^2
c. dB/cm/MHz
d. mW -
correct answer ✅b
The average speed of sound in soft tissue is:
a. 1580 m/s
b. 3300 m/s
c. 1540 m/s
d. 1540 cm/s -
correct answer ✅c
Which of the following correctly describes m-mode?
a. Uses a higher intensity beam than Doppler ultrasound
, SPI mock exam A20 Questions And Answers
b. Normally used with a sweep speed of 100 mm/s speed
c. Uses a very high sampling rate
d. Has better axial resolution than 2D imaging -
correct answer ✅c
Put the following media in order from lowest to highest according
to their acoustic impedance.
Bone
Air
Liver
Blood
a. Air, bone, liver, blood
b. Bone, liver, blood, air
c. Liver, bone, air, blood
d. Air, blood, liver, bone -
correct answer ✅d
Is the input power is 2 mW and the output power is 200 mW, what
is the gain?
a. 20dB
b. 10dB
