LRA 221 EXAM SCRIPT 2026 FULL QUESTIONS
WITH VERIFIED SOLUTIONS
◉ Storage phosphor plates are similar to
A. intensifying screens
B. xermammography cassettes
C. flat panel detectors
D.cardboard cassette. Answer: intensifying screens
◉ In a digital radiography system, which of the following are needed
to produce a radiographic image?
a. X-ray absorber and a CCD
b. Intensifying screen and a TFT
c. Storage phosphor plate and a CCD
d. Storage phosphor plate and a TFT. Answer: x-ray absorber and a
CCD
◉ The two elements needed to convert light signals into an electrical
signal while using indirect capture FPD are TFT and:
A. photodetector
B. photoconductors
C. phototransistors
,D. photostators. Answer: photodetector
◉ The x-ray absorber typically used in direct capture DR is a ______.
a. Photodiode
b. Phototransistor
c. Photoconductor
d. Photoelectron`. Answer: photoconductor
◉ Technologist efficiency ratings are generally the same when
comparing conventional radiography with ______ radiography
A. computed
B. digital. Answer: computed
◉ Compared with a 90-second processing time found in
conventional radiography, image acquisition with DR has now been
reduced to ______.
a. Instantaneous acquisition
b. 1 to 2 seconds
c. 3 to 5 seconds
d. 6 to 8 second. Answer: 3 to 5 seconds
◉ The active element in a storage phosphor is ______.
,a. Lithium
b. Glutaraldehyde
c. Europium
d. Barium fluorohalide. Answer: barium fluorohalide
◉ In reference to PSP image capture, to release the latent image,
which of the following devices is scanned over the phosphor plate?
a. Photomultiplier tube
b. Fluorescent light
c. Focused laser light
d. Lithium crystal. Answer: focused laser light
◉ Which of the following best describes the sequence for PSP image
capture?
a. Phosphor plate, focused laser light scanner, photomultiplier,
digital-analog converter, review station
b. Phosphor plate, focused laser light scanner, photodensitometer,
digital-analog converter, review station
c. Phosphor plate, focused laser light scanner, photodensitometer,
analog-digital converter, review station
d. Phosphor plate, focused laser light scanner, photomultiplier,
analog-digital converter, review station. Answer: d. 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.
a. Photodensitometer
b. Scintillator
c. TFT array
d. Charge-coupled device. Answer: scintillator
◉ X-ray energy related to direct capture DR will stimulate a ______,
which eventually is changed into an electrical signal.
a. Photodensitometer
b. Scintillator
c. TFT array
d. Charge-coupled device. Answer: photoconductor
◉ Exposure latitude is to conventional radiography as _______ is to
DR.
a. Characteristic response
b. Linear manner
c. Subject contrast
d. Dynamic range. Answer: dynamic range
WITH VERIFIED SOLUTIONS
◉ Storage phosphor plates are similar to
A. intensifying screens
B. xermammography cassettes
C. flat panel detectors
D.cardboard cassette. Answer: intensifying screens
◉ In a digital radiography system, which of the following are needed
to produce a radiographic image?
a. X-ray absorber and a CCD
b. Intensifying screen and a TFT
c. Storage phosphor plate and a CCD
d. Storage phosphor plate and a TFT. Answer: x-ray absorber and a
CCD
◉ The two elements needed to convert light signals into an electrical
signal while using indirect capture FPD are TFT and:
A. photodetector
B. photoconductors
C. phototransistors
,D. photostators. Answer: photodetector
◉ The x-ray absorber typically used in direct capture DR is a ______.
a. Photodiode
b. Phototransistor
c. Photoconductor
d. Photoelectron`. Answer: photoconductor
◉ Technologist efficiency ratings are generally the same when
comparing conventional radiography with ______ radiography
A. computed
B. digital. Answer: computed
◉ Compared with a 90-second processing time found in
conventional radiography, image acquisition with DR has now been
reduced to ______.
a. Instantaneous acquisition
b. 1 to 2 seconds
c. 3 to 5 seconds
d. 6 to 8 second. Answer: 3 to 5 seconds
◉ The active element in a storage phosphor is ______.
,a. Lithium
b. Glutaraldehyde
c. Europium
d. Barium fluorohalide. Answer: barium fluorohalide
◉ In reference to PSP image capture, to release the latent image,
which of the following devices is scanned over the phosphor plate?
a. Photomultiplier tube
b. Fluorescent light
c. Focused laser light
d. Lithium crystal. Answer: focused laser light
◉ Which of the following best describes the sequence for PSP image
capture?
a. Phosphor plate, focused laser light scanner, photomultiplier,
digital-analog converter, review station
b. Phosphor plate, focused laser light scanner, photodensitometer,
digital-analog converter, review station
c. Phosphor plate, focused laser light scanner, photodensitometer,
analog-digital converter, review station
d. Phosphor plate, focused laser light scanner, photomultiplier,
analog-digital converter, review station. Answer: d. 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.
a. Photodensitometer
b. Scintillator
c. TFT array
d. Charge-coupled device. Answer: scintillator
◉ X-ray energy related to direct capture DR will stimulate a ______,
which eventually is changed into an electrical signal.
a. Photodensitometer
b. Scintillator
c. TFT array
d. Charge-coupled device. Answer: photoconductor
◉ Exposure latitude is to conventional radiography as _______ is to
DR.
a. Characteristic response
b. Linear manner
c. Subject contrast
d. Dynamic range. Answer: dynamic range
