SPI Practice Exams A & B Questions and
Answers (100% Correct Answers) Already
Graded A+
What angle of insonation to blood flow produces the
maximum doppler shift?
A. 180
B. 150
C. 90
D. 45 [ Ans: ] D. 45
Which scenario will produce no doppler shift to the
receiver?
A. Source and receiver moving at the same speed and
direction
B. Source moving backward toward the receiver
C. Source moving away from receiver
D. Receiver moving toward source [ Ans: ] A. Source and
receiver moving at the same speed and direction
Which condition must be present for refraction to occur?
A. The presence of a strong specular reflector
,B. the presence of several small reflectors
C. A difference in tissue propagation speeds
D. A change in the angle of reflection [ Ans: ] C. A
difference in tissue propagation speeds
What is the most common cause of localized vertical
nonuniformity in a real-time B-mode image?
A. Improper time gain compensation
B. Defective transducer elements
C. Faulty preamplifier
D. Malfunctioning scan converter [ Ans: ] B. Defective
transducer elements
Which frequency is best to evaluate structures lying 1 to 2
cm from the transducer?
A. 2 MHz
B. 4 MHz
C. 6 MHz
D. 8 MHz [ Ans: ] D. 8 MHz
Which technique utilizes frequency modulation of the
transmitted pulse to improve signal-to-noise ratio?
, A. Apodizaiton
B. Panoramic imaging
C. Coded excitation
D. Spatial compounding [ Ans: ] C. Coded excitation
Which control allows adjustment for attenuation at
specific depths?
A .Time gain compensation
B. Depth
C. Output power
D. Dynamic range [ Ans: ] A .Time gain compensation
Which technique increases the sharpness of high contrast
boundaries?
A. Edge enhancement
B. Interpolation
C. Smoothing
D. Frame averaging [ Ans: ] A. Edge enhancement
Answers (100% Correct Answers) Already
Graded A+
What angle of insonation to blood flow produces the
maximum doppler shift?
A. 180
B. 150
C. 90
D. 45 [ Ans: ] D. 45
Which scenario will produce no doppler shift to the
receiver?
A. Source and receiver moving at the same speed and
direction
B. Source moving backward toward the receiver
C. Source moving away from receiver
D. Receiver moving toward source [ Ans: ] A. Source and
receiver moving at the same speed and direction
Which condition must be present for refraction to occur?
A. The presence of a strong specular reflector
,B. the presence of several small reflectors
C. A difference in tissue propagation speeds
D. A change in the angle of reflection [ Ans: ] C. A
difference in tissue propagation speeds
What is the most common cause of localized vertical
nonuniformity in a real-time B-mode image?
A. Improper time gain compensation
B. Defective transducer elements
C. Faulty preamplifier
D. Malfunctioning scan converter [ Ans: ] B. Defective
transducer elements
Which frequency is best to evaluate structures lying 1 to 2
cm from the transducer?
A. 2 MHz
B. 4 MHz
C. 6 MHz
D. 8 MHz [ Ans: ] D. 8 MHz
Which technique utilizes frequency modulation of the
transmitted pulse to improve signal-to-noise ratio?
, A. Apodizaiton
B. Panoramic imaging
C. Coded excitation
D. Spatial compounding [ Ans: ] C. Coded excitation
Which control allows adjustment for attenuation at
specific depths?
A .Time gain compensation
B. Depth
C. Output power
D. Dynamic range [ Ans: ] A .Time gain compensation
Which technique increases the sharpness of high contrast
boundaries?
A. Edge enhancement
B. Interpolation
C. Smoothing
D. Frame averaging [ Ans: ] A. Edge enhancement
