LRA 221 FINAL EXAMINATION TEST 2026 FULL
QUESTIONS WITH COMPLETE SOLUTIONS
◉ Sequence for PSP image capture. Answer: Phosphor plate, focused
laser light scanner, photomultiplier, analog digital converter, review
station
◉ X-ray energy related to direct capture DR will stimulate a ______,
which eventually is changed into an electrical signal.. Answer:
scintillator
◉ What converts x-ray energy directly to a digital electrical signal.
Answer: photoconductor
◉ Exposure latitude is to conventional radiography as _______ is to
DR.. Answer: dynamic range
◉ Components of pacs. Answer: Image acquisition, display
workstations, archive servers
◉ Are major equipment changes expected when switching a
conventional diagnostic radiography room to one that incorporates
CR.. Answer: no, false
, ◉ Does indirect capture DR convert absorbed x-ray energy into
visible light. Answer: yes, true
◉ What determines the size of a pixel. Answer: size of the matrix
◉ Factors that can adversely affect the pixel values expressed in the
deviation index. Answer: -gonadal shielding within the image.
a prosthesis within the image.
-failure of the system to recognize the collimated border.
NOT
-failure of the system to recognize the exposure indicator.
◉ A perfect image processing system would have an MTF of.
Answer: 1 or 100%
◉ MTF is a way to quantify the contribution of each system
component and the component's overall efficiency (T/F). Answer:
true
◉ If entire range of exposure were digitized, pixel values
representing would be digitized.. Answer: all values
QUESTIONS WITH COMPLETE SOLUTIONS
◉ Sequence for PSP image capture. Answer: Phosphor plate, focused
laser light scanner, photomultiplier, analog digital converter, review
station
◉ X-ray energy related to direct capture DR will stimulate a ______,
which eventually is changed into an electrical signal.. Answer:
scintillator
◉ What converts x-ray energy directly to a digital electrical signal.
Answer: photoconductor
◉ Exposure latitude is to conventional radiography as _______ is to
DR.. Answer: dynamic range
◉ Components of pacs. Answer: Image acquisition, display
workstations, archive servers
◉ Are major equipment changes expected when switching a
conventional diagnostic radiography room to one that incorporates
CR.. Answer: no, false
, ◉ Does indirect capture DR convert absorbed x-ray energy into
visible light. Answer: yes, true
◉ What determines the size of a pixel. Answer: size of the matrix
◉ Factors that can adversely affect the pixel values expressed in the
deviation index. Answer: -gonadal shielding within the image.
a prosthesis within the image.
-failure of the system to recognize the collimated border.
NOT
-failure of the system to recognize the exposure indicator.
◉ A perfect image processing system would have an MTF of.
Answer: 1 or 100%
◉ MTF is a way to quantify the contribution of each system
component and the component's overall efficiency (T/F). Answer:
true
◉ If entire range of exposure were digitized, pixel values
representing would be digitized.. Answer: all values
