COMPREHENSIVE EXAM SPI
EDELMAN QUESTIONS AND
ANSWERS 2026 - 2027
a transducer ______ one form of _____ into another. - ANSWERS-
converts, energy
the production of a voltage from the application of a pressure is called
- ANSWERS-piezoelectricity
what is the production of deformation from voltage called? -
ANSWERS-piezoelectricity
which is not a part of a transducer - ANSWERS-A/D converter
what is the Fraunhofer? - ANSWERS-far zone
if we increase the frequency the near zone length is: - ANSWERS-
increased
If the transducer aperture increases, the lateral resolution at its
smallest dimension is: - ANSWERS-increased
,if we increase the transducer diameter, the beam diameter in the far
zone is: - ANSWERS-decreased
at the focus, the beam diameter is ______ the transducer diameter. -
ANSWERS-half
lateral resolution can be improved by: - ANSWERS-focusing
T/F: the digital scan converter has a number of pixels assigned to each
bit. - ANSWERS-false
the more bits per pixel: - ANSWERS-the more shades of gray
the more pixels per inch: - ANSWERS-the better is the spatial
resolution
which of the following is the first adjustment made when an entire
image is too dark? - ANSWERS-gain
what is the elimination of voltages that do not exceed at a certain
level? - ANSWERS-reject
what is the name of the receiver function that corrects for attenuation?
- ANSWERS-compensation
,the process of changing gray scale is called: - ANSWERS-dynamic
range
if the lines per frame is increased while the imaging depth is
unchanged then: - ANSWERS-the frame rate decreases
T/F: a mirror image artifact can appear along side of the true anatomy.
- ANSWERS-false
enhancement, multipath and side lobes result in: - ANSWERS-artifact
the propagation speed of US in the AIUM test object is: - ANSWERS-
1.54 mm/μs
if wires in an AIUM test object do not appear in the same place as on
the display, what is amiss? - ANSWERS-registration accuracy
how many data bits are needed to represent 46 gray shades? -
ANSWERS-6
the fresnel is the: - ANSWERS-near zone
which of the following is associated with cavitation? - ANSWERS-
mechanical index
, which of the following best describes the mechanistic approach to the
study of bioeffects? - ANSWERS-cause-effect
which of the following best describes the empirical approach to the
study of bioeffects? - ANSWERS-exposure-response
the interaction of microscopic bubbles and ultrasound form the basis
for cavitation bioeffects. which of the following forms of cavitation
are most likely to produce microstreaming in the intracellular fluid
and shear stresses? - ANSWERS-stable cavitation
the consolidation of many images into a single frame best describes
which of the following? - ANSWERS-persistence
what artifact is created by an object that is located deeper than the
image? - ANSWERS-range ambiguity
which of the following will eliminate range ambiguity artifact? -
ANSWERS-coded excitation
which of the following will eliminate range ambiguity artifact? -
ANSWERS-imaging deep
which of the following will eliminate range ambiguity artifact? -
ANSWERS-lowering the PRF
EDELMAN QUESTIONS AND
ANSWERS 2026 - 2027
a transducer ______ one form of _____ into another. - ANSWERS-
converts, energy
the production of a voltage from the application of a pressure is called
- ANSWERS-piezoelectricity
what is the production of deformation from voltage called? -
ANSWERS-piezoelectricity
which is not a part of a transducer - ANSWERS-A/D converter
what is the Fraunhofer? - ANSWERS-far zone
if we increase the frequency the near zone length is: - ANSWERS-
increased
If the transducer aperture increases, the lateral resolution at its
smallest dimension is: - ANSWERS-increased
,if we increase the transducer diameter, the beam diameter in the far
zone is: - ANSWERS-decreased
at the focus, the beam diameter is ______ the transducer diameter. -
ANSWERS-half
lateral resolution can be improved by: - ANSWERS-focusing
T/F: the digital scan converter has a number of pixels assigned to each
bit. - ANSWERS-false
the more bits per pixel: - ANSWERS-the more shades of gray
the more pixels per inch: - ANSWERS-the better is the spatial
resolution
which of the following is the first adjustment made when an entire
image is too dark? - ANSWERS-gain
what is the elimination of voltages that do not exceed at a certain
level? - ANSWERS-reject
what is the name of the receiver function that corrects for attenuation?
- ANSWERS-compensation
,the process of changing gray scale is called: - ANSWERS-dynamic
range
if the lines per frame is increased while the imaging depth is
unchanged then: - ANSWERS-the frame rate decreases
T/F: a mirror image artifact can appear along side of the true anatomy.
- ANSWERS-false
enhancement, multipath and side lobes result in: - ANSWERS-artifact
the propagation speed of US in the AIUM test object is: - ANSWERS-
1.54 mm/μs
if wires in an AIUM test object do not appear in the same place as on
the display, what is amiss? - ANSWERS-registration accuracy
how many data bits are needed to represent 46 gray shades? -
ANSWERS-6
the fresnel is the: - ANSWERS-near zone
which of the following is associated with cavitation? - ANSWERS-
mechanical index
, which of the following best describes the mechanistic approach to the
study of bioeffects? - ANSWERS-cause-effect
which of the following best describes the empirical approach to the
study of bioeffects? - ANSWERS-exposure-response
the interaction of microscopic bubbles and ultrasound form the basis
for cavitation bioeffects. which of the following forms of cavitation
are most likely to produce microstreaming in the intracellular fluid
and shear stresses? - ANSWERS-stable cavitation
the consolidation of many images into a single frame best describes
which of the following? - ANSWERS-persistence
what artifact is created by an object that is located deeper than the
image? - ANSWERS-range ambiguity
which of the following will eliminate range ambiguity artifact? -
ANSWERS-coded excitation
which of the following will eliminate range ambiguity artifact? -
ANSWERS-imaging deep
which of the following will eliminate range ambiguity artifact? -
ANSWERS-lowering the PRF
