Page 1 of 341
Davies Ultrasound Physics exam review
VERSION A & B ALL 700 QUESTIONS AND
VERIFIED SOLUTIONS LATEST UPDATE
THIS YEAR
Davies Ultrasound Physics exam review A
QUESTION: Which of the following is NOT true of the backing layer found in a transducer?
A. Is made of epoxy resin with tungsten
B. Is located behind the crystal
C. Is made of air
D. Utilized to stop the crystal from ringiing - ANSWER-B. Is made of air
QUESTION: How is beam steering accomplished in an annular transducer? - ANSWER-
Mechanically
QUESTION: What type of image does a linear segmental (sequential or sequenced) array
produce? - ANSWER-Rectangular image
1
, Page 2 of 341
QUESTION: Dividing a normal crystal element into many smaller elements is termed - ANSWER-
Subdicing
QUESTION: Electronic slope results in steering of the sound beam. It is accomplished by altering
the: - ANSWER-Electronic pattern for excitation of the crystals
QUESTION: The ability to see two separate echoes which are in a plane perpendicular to the
sound beam is known as - ANSWER-Angular resolution
QUESTION: Transducer sterilization can be performed by all of the following techniques except:
A. Cold sterilization
B. Disinfectant solutions as per manufacturer recommendations
C. Autoclave sterilization
D. All of the above can be used - ANSWER-B. Autoclave sterilization
2
, Page 3 of 341
Which probe would provide the best axial resolution to measure the thickness of a small
structure?
A. 10 Mhz
B. 2.5 Mhz
C. 5 Mhz
D. 7 Mhz - ANSWER-A. 10 Mhz
QUESTION: Which of the following will NOT improve axial resolution?
A. Increased transducer frequency
B. Increased focusing
C. Increased damping
D. Decreased pulse length - ANSWER-B. Increased focusing
QUESTION: Another name for axial resolution - ANSWER-Range
3
, Page 4 of 341
QUESTION: What statement describes a phased array transducer? - ANSWER-Electronically
focused along the length of the array and electronically steered
QUESTION: The sound beam can be focused by all of the following EXCEPT
A. Acoustic mirror
B. Acoustic lens
C. Curved crystal
D. Matching layer - ANSWER-D. Matching layer
QUESTION: What type of focusing decreases the frame rate (temporal resolution)? - ANSWER-
Multiple transmit
QUESTION: The ability to distinguish between adjacent structures that produce echoes of
similar amplitude is - ANSWER-Contrast resolution
QUESTION: Electronic focusing in the transmit mode is accomplished using - ANSWER-Time
delays to excite transducer elements
4
Davies Ultrasound Physics exam review
VERSION A & B ALL 700 QUESTIONS AND
VERIFIED SOLUTIONS LATEST UPDATE
THIS YEAR
Davies Ultrasound Physics exam review A
QUESTION: Which of the following is NOT true of the backing layer found in a transducer?
A. Is made of epoxy resin with tungsten
B. Is located behind the crystal
C. Is made of air
D. Utilized to stop the crystal from ringiing - ANSWER-B. Is made of air
QUESTION: How is beam steering accomplished in an annular transducer? - ANSWER-
Mechanically
QUESTION: What type of image does a linear segmental (sequential or sequenced) array
produce? - ANSWER-Rectangular image
1
, Page 2 of 341
QUESTION: Dividing a normal crystal element into many smaller elements is termed - ANSWER-
Subdicing
QUESTION: Electronic slope results in steering of the sound beam. It is accomplished by altering
the: - ANSWER-Electronic pattern for excitation of the crystals
QUESTION: The ability to see two separate echoes which are in a plane perpendicular to the
sound beam is known as - ANSWER-Angular resolution
QUESTION: Transducer sterilization can be performed by all of the following techniques except:
A. Cold sterilization
B. Disinfectant solutions as per manufacturer recommendations
C. Autoclave sterilization
D. All of the above can be used - ANSWER-B. Autoclave sterilization
2
, Page 3 of 341
Which probe would provide the best axial resolution to measure the thickness of a small
structure?
A. 10 Mhz
B. 2.5 Mhz
C. 5 Mhz
D. 7 Mhz - ANSWER-A. 10 Mhz
QUESTION: Which of the following will NOT improve axial resolution?
A. Increased transducer frequency
B. Increased focusing
C. Increased damping
D. Decreased pulse length - ANSWER-B. Increased focusing
QUESTION: Another name for axial resolution - ANSWER-Range
3
, Page 4 of 341
QUESTION: What statement describes a phased array transducer? - ANSWER-Electronically
focused along the length of the array and electronically steered
QUESTION: The sound beam can be focused by all of the following EXCEPT
A. Acoustic mirror
B. Acoustic lens
C. Curved crystal
D. Matching layer - ANSWER-D. Matching layer
QUESTION: What type of focusing decreases the frame rate (temporal resolution)? - ANSWER-
Multiple transmit
QUESTION: The ability to distinguish between adjacent structures that produce echoes of
similar amplitude is - ANSWER-Contrast resolution
QUESTION: Electronic focusing in the transmit mode is accomplished using - ANSWER-Time
delays to excite transducer elements
4
