Digital Radiography and PACS final
Questions with Correct Answers
Film and intensifying screens are primarily used in
a. computed radiography (CR).
b. digital radiography (DR).
c. conventional radiography.
d. picture archival and communication systems. - ANSWERSc. conventional
radiography.
Intensifying screens
a. absorb light.
b. emit light.
c. absorb scatter.
d. emit positive electrons. - ANSWERSB. Emit Light
Which modality was the first to use the principle of digital imaging?
a. Computed tomography (CT)
b. Magnetic resonance imaging (MRI)
c. Ultrasonography
d. Cardiac catheterization - ANSWERSa. Computed tomography (CT)
Who was the first to incorporate digital imaging with the CT scanner?
a. Paul Lauterbur
b. Godfrey Hounsfield
c. Sol Nudelman
d. M. Paul Capp - ANSWERSb. Godfrey Hounsfield
Teleradiology, moving images via telephone lines to and from remote locations, was
first conceptualized by
a. Paul Lauterbur.
b. M. Paul Capp.
c. Albert Jutras.
d. Sol Nudelman. - ANSWERSc. Albert Jutras.
The invention of CT is heralded as
a. the advanced use of three-dimensional computation in medical imaging.
,b. one of the greatest milestones in medical imaging.
c. the stepping stone for the development of MRI.
d. The first modality to use PACS. - ANSWERSb. one of the greatest milestones in
medical imaging.
Early reconstruction of raw CT data took a few _______ to form a recognizable image
a. minutes
b. hours
c. days - ANSWERSc. Days
The first commercial CT scanners could image the
a. abdomen only.
b. head only
c. head and abdomen.
d. total body. - ANSWERSb. head only
In which decade was MRI first introduced?
a. 1950s
b. 1960s
c. 1970s
d. 1980s - ANSWERSd. 1980s
Which two modalities could easily be converted to digital imaging properties?
a. CT and ultrasonography
b. CT and MRI
c. Ultrasonography and nuclear medicine
d. Nuclear medicine and CT - ANSWERSc. Ultrasonography and nuclear medicine
Early picture archival and communication systems were first developed
a. in Canada.
b. by the U.S. military.
c. by Albert Jutras.
d. by NASA. - ANSWERSb. By the U.S. military
Teleradiography incorporated ________ to produce radiographic images
a. satellite feeds
b. cable lines
c. TI cables
d. telephone lines - ANSWERSd. telephone lines
,One of the early goals related to the development of PACS was to
a. reduce costs related to overstafling.
b. allow radiologists to read stat films from a hospital while at home.
c. provide a means to move battlefield images to an established hospital.
d. eliminate the need for chemical processing. - ANSWERSc. provide a means to move
battlefield images to an established hospital.
CR acquires an image through
a. conventional film/screen processing using digital scanner.
b. the heating of a thermoluminescent device.
c. an electrically charged cassette.
d. the use of a storage phosphor plate., - ANSWERSD. The use of a storage phosphor
plate
Storage phosphor plates are similar to
a. intensifying screens.
b. xeromammography cassettes.
c. flat panel detectors,
d. cardboard cassettes. - ANSWERSa. intensifying screens.
In a DR 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 - ANSWERSa. X-ray absorber and a CCD
The two elements needed to convert light signals into an electrical signal while using
indirect capture DR are TFT and
a. photodiodes.
b. photoconductors.
c. phototransistors.
d. photostators. - ANSWERSa. photodiodes.
The x-ray absorber typically used in direct capture DR is a
a. photodiode.
b. phototransistor.
c. photoconductor.
d. photoelectron. - ANSWERSc. photoconductor
, Technologist efficiency ratings are generally the same when comparing conventional
radiography with _______ radiography
a. computed
b. digital - ANSWERSa. 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. 1-2 seconds.
c. 3-5 seconds.
d. 6-8 seconds. - ANSWERSc. 3 to 5 seconds
The active element in a storage phosphor is
a. lithium.
b. glutaraldehyde.
c. europium.
d. barium fluorohalide. - ANSWERSd. 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 - ANSWERSc. 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 - ANSWERSd. 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
Questions with Correct Answers
Film and intensifying screens are primarily used in
a. computed radiography (CR).
b. digital radiography (DR).
c. conventional radiography.
d. picture archival and communication systems. - ANSWERSc. conventional
radiography.
Intensifying screens
a. absorb light.
b. emit light.
c. absorb scatter.
d. emit positive electrons. - ANSWERSB. Emit Light
Which modality was the first to use the principle of digital imaging?
a. Computed tomography (CT)
b. Magnetic resonance imaging (MRI)
c. Ultrasonography
d. Cardiac catheterization - ANSWERSa. Computed tomography (CT)
Who was the first to incorporate digital imaging with the CT scanner?
a. Paul Lauterbur
b. Godfrey Hounsfield
c. Sol Nudelman
d. M. Paul Capp - ANSWERSb. Godfrey Hounsfield
Teleradiology, moving images via telephone lines to and from remote locations, was
first conceptualized by
a. Paul Lauterbur.
b. M. Paul Capp.
c. Albert Jutras.
d. Sol Nudelman. - ANSWERSc. Albert Jutras.
The invention of CT is heralded as
a. the advanced use of three-dimensional computation in medical imaging.
,b. one of the greatest milestones in medical imaging.
c. the stepping stone for the development of MRI.
d. The first modality to use PACS. - ANSWERSb. one of the greatest milestones in
medical imaging.
Early reconstruction of raw CT data took a few _______ to form a recognizable image
a. minutes
b. hours
c. days - ANSWERSc. Days
The first commercial CT scanners could image the
a. abdomen only.
b. head only
c. head and abdomen.
d. total body. - ANSWERSb. head only
In which decade was MRI first introduced?
a. 1950s
b. 1960s
c. 1970s
d. 1980s - ANSWERSd. 1980s
Which two modalities could easily be converted to digital imaging properties?
a. CT and ultrasonography
b. CT and MRI
c. Ultrasonography and nuclear medicine
d. Nuclear medicine and CT - ANSWERSc. Ultrasonography and nuclear medicine
Early picture archival and communication systems were first developed
a. in Canada.
b. by the U.S. military.
c. by Albert Jutras.
d. by NASA. - ANSWERSb. By the U.S. military
Teleradiography incorporated ________ to produce radiographic images
a. satellite feeds
b. cable lines
c. TI cables
d. telephone lines - ANSWERSd. telephone lines
,One of the early goals related to the development of PACS was to
a. reduce costs related to overstafling.
b. allow radiologists to read stat films from a hospital while at home.
c. provide a means to move battlefield images to an established hospital.
d. eliminate the need for chemical processing. - ANSWERSc. provide a means to move
battlefield images to an established hospital.
CR acquires an image through
a. conventional film/screen processing using digital scanner.
b. the heating of a thermoluminescent device.
c. an electrically charged cassette.
d. the use of a storage phosphor plate., - ANSWERSD. The use of a storage phosphor
plate
Storage phosphor plates are similar to
a. intensifying screens.
b. xeromammography cassettes.
c. flat panel detectors,
d. cardboard cassettes. - ANSWERSa. intensifying screens.
In a DR 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 - ANSWERSa. X-ray absorber and a CCD
The two elements needed to convert light signals into an electrical signal while using
indirect capture DR are TFT and
a. photodiodes.
b. photoconductors.
c. phototransistors.
d. photostators. - ANSWERSa. photodiodes.
The x-ray absorber typically used in direct capture DR is a
a. photodiode.
b. phototransistor.
c. photoconductor.
d. photoelectron. - ANSWERSc. photoconductor
, Technologist efficiency ratings are generally the same when comparing conventional
radiography with _______ radiography
a. computed
b. digital - ANSWERSa. 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. 1-2 seconds.
c. 3-5 seconds.
d. 6-8 seconds. - ANSWERSc. 3 to 5 seconds
The active element in a storage phosphor is
a. lithium.
b. glutaraldehyde.
c. europium.
d. barium fluorohalide. - ANSWERSd. 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 - ANSWERSc. 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 - ANSWERSd. 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
