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Similar to CR,DR can use the existing diagnostic equipment found in today's imaging departments.

A) True
B) False

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Technologist efficiency ratings are generally the same when comparing conventional radiography with ______ radiography.


A) computed
B) digital

C) A) and B)
D) undefined

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Preset image annotation controls include all of the following except


A) arrows.
B) position indicators.
C) date and time stamps.
D) image acquisition markers.

E) B) and C)
F) A) and D)

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The first full-scale PACS was installed in 1993 in


A) Boston.
B) Philadelphia.
C) New York.
D) Baltimore.

E) B) and C)
F) All of the above

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The first commercial CT scanners could image the


A) abdomen only.
B) head only.
C) head and abdomen.
D) total body.

E) B) and C)
F) B) and D)

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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

E) A) and B)
F) A) and C)

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DICOM is a standard that allows imaging modalities and PACS to communicate in the same language.

A) True
B) False

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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

E) B) and D)
F) A) and C)

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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

E) None of the above
F) A) and D)

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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

E) B) and C)
F) A) and C)

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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

E) A) and D)
F) B) and C)

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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.

E) A) and B)
F) All of the above

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All of the following are components of a PACS except


A) independent kilovoltage peak and milliampere-second stations.
B) web access.
C) multiple interfaces.
D) reading stations.

E) All of the above
F) C) and D)

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The earliest CT of the head took several hours to acquire a single slice of information.

A) True
B) False

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With conventional radiography,optical density is primarily controlled by


A) kilovoltage.
B) milliamperage.
C) line voltage.
D) milliampere-seconds.

E) A) and C)
F) A) and B)

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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.

E) B) and D)
F) All of the above

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The ______ converts x-ray energy directly to a digital electrical signal.


A) photoconductor
B) photomultiplier
C) scintillator
D) TLD

E) None of the above
F) A) and B)

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The active element in a storage phosphor is


A) lithium.
B) glutaraldehyde.
C) europium.
D) barium fluorohalide.

E) All of the above
F) C) and D)

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Early reconstruction of raw CT data took a few ______ to form a recognizable image.


A) minutes
B) hours
C) days

D) A) and B)
E) A) and C)

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