RADT 1065 EXAM QUESTIONS WITH ALL CORRECT ANSWERS
when processing the PSP plate, the analog signal is digitized and divided into a matrix of squares. Each square is a
A) detector element (DEL)
B) field of view (FOV)
C) picture element (pixel)
D) volume element (voxel) - Answer C) picture ...
when processing the PSP plate, the analog signal is digitized and divided into a matrix
of squares. Each square is a
A) detector element (DEL)
B) field of view (FOV)
C) picture element (pixel)
D) volume element (voxel) - Answer ✔ C) picture element (pixel)
the useful imaging area of the digital receptor is the
A) detector element (DEL)
B) field of view (FOV)
C) thin-film transistor (TFT)
D) values of interest (VOI) - Answer ✔ B) field of view (FOV)
which of the following is the correct sequence for extracting and processing the image
with the PSP plate?
A) signal sent to ADC; scanned by laser light; sampling of signal; converted to electronic
signal
B) converted to electronic signal; sampling of signal; signal sent to ADC; scanned by
laser light
C) scanned by laser light; converted to electronic signal; sampling of signal; signal sent
to ADC
D) none of these - Answer ✔ C) scanned by laser light; converted to electronic signal;
sampling of signal; signal sent to ADC
as the matrix size increases, the pixel size
A) increases
B) decreases
C) remains the same - Answer ✔ B) decreases
As the matrix size decreases, the spatial resolution
A) increases
B) decreases
C) remains the same - Answer ✔ B) decreases
as the pixel size decreases, the spatial resolution
A) increases
B) decreases
C) remains the same - Answer ✔ A) increases
, the range of exposures that produce acceptable information to be used in image
formation
A) exposure range
B) dynamic range
C) exposure latitude
D) bit depth - Answer ✔ C) exposure latitude
digital imaging preprocessing includes
A) rescaling
B) histogram analysis
C) rescaling and histogram analysis
D) none of these - Answer ✔ C) rescaling and histogram analysis
postprocessing functions
A) allow changes to be made in the appearance of the digital image
B) are done through computer software operations
C) include window width and window level adjustments
D) all of these - Answer ✔ D) all of these
In CR, this represents the exposure level to the PSP plate
A) exposure indicator
B) dose-area product (DAP)
C) detective quantum efficiency (DQE)
D) dynamic range - Answer ✔ A) exposure indicator
the value that indicates exposure to the IR with a DR imaging system is the
A) exposure indicator
B) dose-area product (DAP)
C) detective quantum efficiency (DQE)
D) dynamic range - Answer ✔ B) dose-area product (DAP)
related to the DR detector, ______ is an expression of the radiation exposure level that
is required to produce an optimal image
A) exposure indicator
B) dose-area product (DAP)
C) detective quantum efficiency (DQE)
D) target exposure index - Answer ✔ C) detective quantum efficiency (DQE)
having a higher DQE indicates a potentially
A) lower patient dose
B) higher patient dose
C) similar patient dose - Answer ✔ A) lower patient dose
which of the following statements is true concerning computed radiography (CR)
systems?
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