CRDR Final Exam Review Questions & Answers 2024/2025
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Course
CRDR
Institution
CRDR
CRDR Final Exam Review Questions & Answers 2024/2025
Conventional Radiography uses _________and _______ in the image formation process - ANSWERSFilm
intensifying screens
Intensifying Screens __________ when x-rays strike them - ANSWERSemit light
Analog Film's manifest image is processed...
CRDR Final Exam Review Questions &
Answers 2024/2025
Conventional Radiography uses _________and _______ in the image formation process - ANSWERSFilm
intensifying screens
Intensifying Screens __________ when x-rays strike them - ANSWERSemit light
Analog Film's manifest image is processed how? - ANSWERSchemically
Digital Imaging - ANSWERSType of imaging acquisition process that produces an electronic image that
can be viewed and manipulated on a computer
Teleradiology - ANSWERSTransmission of medical images and reports to and from remote sites
Photostimulable Phosphor Plate (PSP) - ANSWERSThe active image receptor used in computed
radiography (CR) whose phosphor layer can be induced to emit its STORED light image, after initial
exposure to x-rays, by re-stimulating it with a laser beam.
T/F: PSP can be cassette-less or cassette-based - ANSWERSTrue
T/F: PSP can store a portion of incident x-ray energy in traps within material for later readout. -
ANSWERSTrue
PSP was first introduced by what brand in the US? - ANSWERSFuji
PSP: Cassette-based falls under what category? - ANSWERSCR
PSP: Cassette-less fall under what category? - ANSWERSDR
,Film/screen falls under what category? - ANSWERSAnalog
Flat Panel Detector (FPD) - ANSWERSconsist of a photoconductor, amorphous selenium, which holds a
charge on its surface, that can be read out by a TFT.
FPD fall under which category? - ANSWERSDR
CR is a ___ step process - ANSWERS3
DR is a ___ step process - ANSWERS2
Indirect capture DR - ANSWERS-absorb x-ray and convert it into light
-the light is then collected by a CCD or TFT or CMOS array and converted into an electrical signal
-electrical signal is then sent to computer for processing
Direct capture DR - ANSWERS-devices convert the incident x-ray energy directly into an electrical signal,
typically using a photoconductor as the X-ray absorber
-then the electrical signal is sent to a TFT and then to an ADC
-The ADC signal goes to the computer for processing and viewing
What is the activator in PSP systems? - ANSWERSeuropium
Latent Image formation: Analog - ANSWERS-x-rays strike intensifying screen
Random disturbance that obscures or reduces clarity is the definition for: - ANSWERSNoise
Adjusting the window level or window width is known as: - ANSWERSWindowing
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