SPI Ultrasound Physics Finals Study Guide
Where does code excitation takes place? -
✔ In the pulser
With frequency compounding, how many pulses are transmitted down each scan line? -
✔ 1
Which of the following technologies uses long sound pulses to create an image? -
✔ Code excitation
In modern Elastography, how are the tissues deformed? -
✔ Automatically
Which of these is binary number? -
✔ 10000000
All of the following are characteristic of write magnification except: -
✔ Identical regions stored in the scan converter before and after zooming
Are the following procedures usually preprocessing or postprocessing?
Modifying a frozen image
Read zoom
Write zoom
Adjusting the brightness on the CRT
Increasing the receiver gain -
✔ Postprocessing
Postprocessing
Preprocessing
Postprocessing
Preprocessing
Which of the following will create harmonics? -
✔ Nonlinear behavior
Which of the following pattern is associated with cardiac contraction? -
✔ Pulsatile
With B-mode, on which axis is strength of the reflection input? -
✔ Z-axis
The excitation of array elements with dissimilar voltages is called _______ and used to _______ -
✔ Apodization
reduce lobe artifacts
What is the shape of the elements in an annular phased array transducer? -
✔ Circles
Which of the following transducers create a rectangular shaped image? -
✔ Linear Sequential Array
What image is created with two dimensional array transducer? -
✔ Three dimensional real time image
Which of the following forms of focusing is different from the others? -
, ✔ Dynamic receive
True or False? The curved pattern of delays in the electrical spikes used in a phased array transducer
focuses the beam during reception. -
✔ False
All of the following describe dynamic receive focusing EXCEPT -
✔ may be used by single crystal transducers
How are the PZT crystals excited when using an ultrasound system with linear sequential array
transducers? -
✔ In a specific order
Which of the following is best described as mechanically steered and multi-focus? -
✔ Annular phased array transducer
Which imaging modality places dots of dissimilar gray scale on the display? -
✔ B-mode
Which transducer possesses the best slice thickness resolution? -
✔ 1 1/2 dimensional arrays
A linear sequential array transducer has 128 crystals. How many crystals are fired to create a single
sound beam? -
✔ A small group
True or False, As frame rate increase, the image quality may degrade. -
✔ True
A sonographer, using a phased array ultrasound system, turns off the multi-focus feature. What is the most
likely consequence of this action? -
✔ The temporal resolution improves
A sonographer adjusts an ultrasound machine to double the depth of view from 5 cm to 10 cm. If the frame
rate remains the same, which one of the following also changed? -
✔ Narrower Sector
Which of the following is consistent with increased or improved temporal resolution? -
✔ Higher frame rate
A sonographer increases the line density from 1 line per degree of sector to 3 lines per degree of sector.
What is the consequence of this action? -
✔ The temporal resolution decrease
What is the primary advantage of multiple focal zones along each scan line of a two dimensional image? -
✔ Improved lateral resolution
A sonographer changes an image's sector size from 90 to 45 degree. The frame rate remained unchanged.
What else must have happened? -
✔ The line density was doubled
What do waves transfer from one location to another? -
✔ Energy
Which of the following best describes sound waves? -
✔ Longitudinal, Mechanical wave
Where does code excitation takes place? -
✔ In the pulser
With frequency compounding, how many pulses are transmitted down each scan line? -
✔ 1
Which of the following technologies uses long sound pulses to create an image? -
✔ Code excitation
In modern Elastography, how are the tissues deformed? -
✔ Automatically
Which of these is binary number? -
✔ 10000000
All of the following are characteristic of write magnification except: -
✔ Identical regions stored in the scan converter before and after zooming
Are the following procedures usually preprocessing or postprocessing?
Modifying a frozen image
Read zoom
Write zoom
Adjusting the brightness on the CRT
Increasing the receiver gain -
✔ Postprocessing
Postprocessing
Preprocessing
Postprocessing
Preprocessing
Which of the following will create harmonics? -
✔ Nonlinear behavior
Which of the following pattern is associated with cardiac contraction? -
✔ Pulsatile
With B-mode, on which axis is strength of the reflection input? -
✔ Z-axis
The excitation of array elements with dissimilar voltages is called _______ and used to _______ -
✔ Apodization
reduce lobe artifacts
What is the shape of the elements in an annular phased array transducer? -
✔ Circles
Which of the following transducers create a rectangular shaped image? -
✔ Linear Sequential Array
What image is created with two dimensional array transducer? -
✔ Three dimensional real time image
Which of the following forms of focusing is different from the others? -
, ✔ Dynamic receive
True or False? The curved pattern of delays in the electrical spikes used in a phased array transducer
focuses the beam during reception. -
✔ False
All of the following describe dynamic receive focusing EXCEPT -
✔ may be used by single crystal transducers
How are the PZT crystals excited when using an ultrasound system with linear sequential array
transducers? -
✔ In a specific order
Which of the following is best described as mechanically steered and multi-focus? -
✔ Annular phased array transducer
Which imaging modality places dots of dissimilar gray scale on the display? -
✔ B-mode
Which transducer possesses the best slice thickness resolution? -
✔ 1 1/2 dimensional arrays
A linear sequential array transducer has 128 crystals. How many crystals are fired to create a single
sound beam? -
✔ A small group
True or False, As frame rate increase, the image quality may degrade. -
✔ True
A sonographer, using a phased array ultrasound system, turns off the multi-focus feature. What is the most
likely consequence of this action? -
✔ The temporal resolution improves
A sonographer adjusts an ultrasound machine to double the depth of view from 5 cm to 10 cm. If the frame
rate remains the same, which one of the following also changed? -
✔ Narrower Sector
Which of the following is consistent with increased or improved temporal resolution? -
✔ Higher frame rate
A sonographer increases the line density from 1 line per degree of sector to 3 lines per degree of sector.
What is the consequence of this action? -
✔ The temporal resolution decrease
What is the primary advantage of multiple focal zones along each scan line of a two dimensional image? -
✔ Improved lateral resolution
A sonographer changes an image's sector size from 90 to 45 degree. The frame rate remained unchanged.
What else must have happened? -
✔ The line density was doubled
What do waves transfer from one location to another? -
✔ Energy
Which of the following best describes sound waves? -
✔ Longitudinal, Mechanical wave
