DAVIES ULTRASOUND TRANSDUCERS
EXAM QUESTIONS WITH 100%
CORRECT ANSWERS LATEST VERSION
2025/2026.
You are using a 5 MHz, 40 mm linear array transducer to image a structure. What is the width of
the image?
A. 20 mm
B. 40 mm
C. 80 mm
D. 120 mm - ANS B. 40 mm
You have selected a wide bandwidth transducer with multiple transmit frequencies to perform a
sonographic examination. Which transmitted frequencies did you select for maximum
penetration
A. 3.0 MHz
B. 3.5 MHz
C. 4.0 MHz
D. 5.0 MHz
E. Penetration is not affected by frequency - ANS A. 3.0 MHz
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,Which probe would have the best axial resolution to measure the thickness of a small
structure?
A. 5 MHz linear array
B. 7 MHz linear array
C. 10 MHz linear array
D. 5 MHz curved array
E. 5 MHz phased array - ANS C. 10 MHz linear array
Axel resolution improves with increasing frequency
You are performing a sonographic exam with a wide band with the transducer. The advantage
you obtain with this transducer compared to narrowband with transducer is
A. Decreased acoustic power output
B. Improved axial resolution
C. Improved Lateral resolution
D. Improve focusing
E. Wide band with transducers can be auto clave - ANS B. Improved axial resolution
Axial resolution is improved with wide band with transducers
Which transducer would provide the longest near zone length
A. 10 MHz, 6 mm diameter aperture
B. 10 MHz, 5 mm diameter aperture
C. 10 MHz, 4 mm diameter aperture
D. 10 MHz, 3 mm diameter aperture
E. 10 MHz 2mm diameter aperture - ANS A.
10 MHz, 6 mm diameter aperture
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,The near zone length increases with increasing aperture. The aperture is the size of the source
of the sound
The location where the sound beam reaches its narrows diameter is known as the
A. Fraunhofer zone
B. Beam area
C. Fresnel zone
D. Currie point
E. Focal zone - ANS E. Focal zone
Which of the following transducers creates a rectangular image shape
A. Linear array
B. Phased array
C. Annular array
D. Curved array
E. B and c only - ANS A. Linear array
The term for a transducer that has an array of rectangular elements arranged in a straight line is
A. Annular array
B. Linear array
C. Curved array
D. Oscillating mechanical transducer
E. Convex sequenced array - ANS B. Linear array
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, For a linear array transducer consisting of a single row of elements, what method is most used
to focus the beam in the elevational direction
A. Transmit focus
B. Dynamic receive focusing
C. Aperture focusing
D. Mechanical focusing
E. None of the above - ANS D. Mechanical focusing
The Z axis is also known as the out of plain dimension. It is the axis that runs across the width of
the transducer transmit, dynamic receive an aperture focusing require the use of multiple
elements. Since there are not multiple elements along the width of the transducer, these types
of focusing cannot be accomplished in this Dimensions. Focusing on the Z axis is accomplished
by mechanical means either a lens or curvature of the element
What type of transducer could you choose to produce a beam that is symmetrical about the
beams axis
A. Annular Array
B. Linear sequenced array
C. Phased array
D. Curved array
E. Tightly curved array - ANS A. Annular array
The annual array is a round transition in which the elements are arranged concentricly. This
transducer creates a cone shaped beam that is symmetric in all dimensions. Linear phased and
carter raise produce beams that are asymmetric. They can have multiple focus zones in the
plane along the length of the transducer by electronically focusing the be, but can only have
one area focus in the plane along the width of the transducer. This is accomplished with a
mechanical focus
4 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
EXAM QUESTIONS WITH 100%
CORRECT ANSWERS LATEST VERSION
2025/2026.
You are using a 5 MHz, 40 mm linear array transducer to image a structure. What is the width of
the image?
A. 20 mm
B. 40 mm
C. 80 mm
D. 120 mm - ANS B. 40 mm
You have selected a wide bandwidth transducer with multiple transmit frequencies to perform a
sonographic examination. Which transmitted frequencies did you select for maximum
penetration
A. 3.0 MHz
B. 3.5 MHz
C. 4.0 MHz
D. 5.0 MHz
E. Penetration is not affected by frequency - ANS A. 3.0 MHz
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,Which probe would have the best axial resolution to measure the thickness of a small
structure?
A. 5 MHz linear array
B. 7 MHz linear array
C. 10 MHz linear array
D. 5 MHz curved array
E. 5 MHz phased array - ANS C. 10 MHz linear array
Axel resolution improves with increasing frequency
You are performing a sonographic exam with a wide band with the transducer. The advantage
you obtain with this transducer compared to narrowband with transducer is
A. Decreased acoustic power output
B. Improved axial resolution
C. Improved Lateral resolution
D. Improve focusing
E. Wide band with transducers can be auto clave - ANS B. Improved axial resolution
Axial resolution is improved with wide band with transducers
Which transducer would provide the longest near zone length
A. 10 MHz, 6 mm diameter aperture
B. 10 MHz, 5 mm diameter aperture
C. 10 MHz, 4 mm diameter aperture
D. 10 MHz, 3 mm diameter aperture
E. 10 MHz 2mm diameter aperture - ANS A.
10 MHz, 6 mm diameter aperture
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,The near zone length increases with increasing aperture. The aperture is the size of the source
of the sound
The location where the sound beam reaches its narrows diameter is known as the
A. Fraunhofer zone
B. Beam area
C. Fresnel zone
D. Currie point
E. Focal zone - ANS E. Focal zone
Which of the following transducers creates a rectangular image shape
A. Linear array
B. Phased array
C. Annular array
D. Curved array
E. B and c only - ANS A. Linear array
The term for a transducer that has an array of rectangular elements arranged in a straight line is
A. Annular array
B. Linear array
C. Curved array
D. Oscillating mechanical transducer
E. Convex sequenced array - ANS B. Linear array
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, For a linear array transducer consisting of a single row of elements, what method is most used
to focus the beam in the elevational direction
A. Transmit focus
B. Dynamic receive focusing
C. Aperture focusing
D. Mechanical focusing
E. None of the above - ANS D. Mechanical focusing
The Z axis is also known as the out of plain dimension. It is the axis that runs across the width of
the transducer transmit, dynamic receive an aperture focusing require the use of multiple
elements. Since there are not multiple elements along the width of the transducer, these types
of focusing cannot be accomplished in this Dimensions. Focusing on the Z axis is accomplished
by mechanical means either a lens or curvature of the element
What type of transducer could you choose to produce a beam that is symmetrical about the
beams axis
A. Annular Array
B. Linear sequenced array
C. Phased array
D. Curved array
E. Tightly curved array - ANS A. Annular array
The annual array is a round transition in which the elements are arranged concentricly. This
transducer creates a cone shaped beam that is symmetric in all dimensions. Linear phased and
carter raise produce beams that are asymmetric. They can have multiple focus zones in the
plane along the length of the transducer by electronically focusing the be, but can only have
one area focus in the plane along the width of the transducer. This is accomplished with a
mechanical focus
4 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
