Ultrasound Board Review - ARDMS Ultrasound Physics
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The Focal Zone is the region around the focus where the beam is:
A) the narrowest
B) relatively narrow
C) 1/2 the beam diameter of the transducer
D) 1/4 the beam diameter of the transducer ✔Correct Answer-B) relatively narrow
According to the Doppler equation, for any given velocity, the frequency shift will increase by
increasing the:
A) Doppler angle
B) transmit frequency
C) pulse length
D) pulse repetition frequency ✔Correct Answer-D) transmit frequency
Which of the following helps improve the axial resolution in a B-mode image?
A) increase the aperture
B) increase the bandwidth
C) use focusing with an acoustic lens
D) increase dynamic range ✔Correct Answer-B) increase the bandwidth
Which of the following is the most appropriate response when a patient refuses an exam?
A) immediately stop the exam and leave
B) convince the patient that the doctor really wants the exam and proceed
C) ignore the patient's request and continue as planned
D) place restraints and/or sedation and proceed with the examination ✔Correct Answer-A)
immediately stop the exam and leave
The velocity scale on the color map is 17 cm/s. If the flow direction is at zero degrees to the sound
beam axis, the colors on either end of the bar would represent:
A) a peak velocity of 17 cm/s
B) an average velocity of 17 cm/s
C) a peak velocity above 17 cm/s
D) a peak velocity below 17 cm/s ✔Correct Answer-B) an average velocity of 17 cm/s
You are performing 3D sonography and notice the volume rate is 8 Hz. What does this represent?
A) Number of transmitted sound pulses per second
B) Number of received pulses per minute
C) Number of volumes displayed per second
D) Number of frames per second ✔Correct Answer-C) Number of volumes displayed per second
How many frames must be presented for the human eye to perceive the display without flickering?
A) 10
B) 30
C) 100
D) 200 ✔Correct Answer-B) 30
, When an ultrasound system creates an image in 1/20 of second, what will be the frame rate?
A) 0.20 Hz
B) 20 Hz
C) 0.20 MHz
D) 20 MHz ✔Correct Answer-B) 20 Hz
Which of the following describes a narrow dynamic range?
A) Low contrast
B) Low compression
C) Bistable
D) Grayscale ✔Correct Answer-C) Bistable
What is the smallest amount of computer memory?
A) Pixel
B) Bit
C) Byte
D) Bistable ✔Correct Answer-B) Bit
Which of the following will create fewer pulses?
A) Single focus
B) Multi-focus
C) High line density
D) Backing material ✔Correct Answer-A) Single focus
Spatial resolution is also known as:
A) Line Density Resolution
B) Pixel Resolution
C) Detail Resolution
D) Frame Rate Resolution ✔Correct Answer-C) Detail Resolution
Pixel density is the number of pictures elements per:
A) centimeter
B) cubic meter
C) inch
D) square inch ✔Correct Answer-C) inch
Which artifact is associated with resonance of a gas bubble?
A) Grating lobes
B) Comet-tail
C) Refraction
D) Ring-down ✔Correct Answer-D) Ring-down
3D imaging is sometimes called what?
A) Compound imaging
B) 4D imaging
C) Trapezoidal imaging
D) Tomographic imaging ✔Correct Answer-B) 4D imaging
All of the following are synonyms for main frequency EXCEPT:
A) Center
Registry Review with all Correct & 100% Verified
Answers |Already Graded A+
The Focal Zone is the region around the focus where the beam is:
A) the narrowest
B) relatively narrow
C) 1/2 the beam diameter of the transducer
D) 1/4 the beam diameter of the transducer ✔Correct Answer-B) relatively narrow
According to the Doppler equation, for any given velocity, the frequency shift will increase by
increasing the:
A) Doppler angle
B) transmit frequency
C) pulse length
D) pulse repetition frequency ✔Correct Answer-D) transmit frequency
Which of the following helps improve the axial resolution in a B-mode image?
A) increase the aperture
B) increase the bandwidth
C) use focusing with an acoustic lens
D) increase dynamic range ✔Correct Answer-B) increase the bandwidth
Which of the following is the most appropriate response when a patient refuses an exam?
A) immediately stop the exam and leave
B) convince the patient that the doctor really wants the exam and proceed
C) ignore the patient's request and continue as planned
D) place restraints and/or sedation and proceed with the examination ✔Correct Answer-A)
immediately stop the exam and leave
The velocity scale on the color map is 17 cm/s. If the flow direction is at zero degrees to the sound
beam axis, the colors on either end of the bar would represent:
A) a peak velocity of 17 cm/s
B) an average velocity of 17 cm/s
C) a peak velocity above 17 cm/s
D) a peak velocity below 17 cm/s ✔Correct Answer-B) an average velocity of 17 cm/s
You are performing 3D sonography and notice the volume rate is 8 Hz. What does this represent?
A) Number of transmitted sound pulses per second
B) Number of received pulses per minute
C) Number of volumes displayed per second
D) Number of frames per second ✔Correct Answer-C) Number of volumes displayed per second
How many frames must be presented for the human eye to perceive the display without flickering?
A) 10
B) 30
C) 100
D) 200 ✔Correct Answer-B) 30
, When an ultrasound system creates an image in 1/20 of second, what will be the frame rate?
A) 0.20 Hz
B) 20 Hz
C) 0.20 MHz
D) 20 MHz ✔Correct Answer-B) 20 Hz
Which of the following describes a narrow dynamic range?
A) Low contrast
B) Low compression
C) Bistable
D) Grayscale ✔Correct Answer-C) Bistable
What is the smallest amount of computer memory?
A) Pixel
B) Bit
C) Byte
D) Bistable ✔Correct Answer-B) Bit
Which of the following will create fewer pulses?
A) Single focus
B) Multi-focus
C) High line density
D) Backing material ✔Correct Answer-A) Single focus
Spatial resolution is also known as:
A) Line Density Resolution
B) Pixel Resolution
C) Detail Resolution
D) Frame Rate Resolution ✔Correct Answer-C) Detail Resolution
Pixel density is the number of pictures elements per:
A) centimeter
B) cubic meter
C) inch
D) square inch ✔Correct Answer-C) inch
Which artifact is associated with resonance of a gas bubble?
A) Grating lobes
B) Comet-tail
C) Refraction
D) Ring-down ✔Correct Answer-D) Ring-down
3D imaging is sometimes called what?
A) Compound imaging
B) 4D imaging
C) Trapezoidal imaging
D) Tomographic imaging ✔Correct Answer-B) 4D imaging
All of the following are synonyms for main frequency EXCEPT:
A) Center
