Digital Radiography and PACS 3rd Edition Carter

Digital Radiography and PACS 3rd Edition Carter Test Bank

Chapter 01: Introduction to Digital Radiography and Picture Archiving and

Communication Systems

Carter: Digital Radiography and PACS, 3rd Edition

MULTIPLE CHOICE

• Film and intensifying screens are primarily used in
• computed radiography (CR).
• digital radiography (DR).
• conventional radiography.
• picture archival and communication systems.

ANS: C OBJ: Explain latent image formation for conventional radiography.

• Intensifying screens
• absorb light.
• emit light.
• absorb scatter.
• emit positive electrons.

ANS: B OBJ: Explain latent image formation for conventional radiography.

• Which modality was the first to use the principle of digital imaging?
• Computed tomography (CT)
• Magnetic resonance imaging (MRI)
• Ultrasonography
• Cardiac catheterization

ANS: A OBJ: Define the term digital imaging.

• Who was the first to incorporate digital imaging with the CT scanner?
• Paul Lauterbur
• Godfrey Hounsfield
• Sol Nudelman
• M. Paul Capp

ANS: B OBJ: Define the term digital imaging.

• Teleradiology, moving images via telephone lines to and from remote locations, was first

conceptualized by

• Paul Lauterbur.
• M. Paul Capp.
• Albert Jutras.
• Sol Nudelman.

ANS: C OBJ: Define digital imaging and communications in medicine.

• The invention of CT is heralded as
• the advanced use of three-dimensional computation in medical imaging.
• one of the greatest milestones in medical imaging.
• the stepping stone for the development of MRI. 1 / 4

• the first modality to use PACS.

ANS: B OBJ: Define the term digital imaging.

• Early reconstruction of raw CT data took a few to form a recognizable image.
• minutes
• hours
• days

ANS: C OBJ: Define the term digital imaging.

• The first commercial CT scanners could image the
• abdomen only.
• head only.
• head and abdomen.
• total body.

ANS: B OBJ: Define the term digital imaging.

• In which decade was MRI first introduced?
• 1950s
• 1960s
• 1970s
• 1980s

ANS: D OBJ: Define the term digital imaging.

• Which two modalities could easily be converted to digital imaging properties?
• CT and ultrasonographTy
• CT and MRI
• Ultrasonography and nuclear medicine
• Nuclear medicine and CT

ANS: C OBJ: Define the term digital imaging.

• Early picture archival and communication systems were first developed
• in Canada.
• by the U.S. military.
• by Albert Jutras.
• by NASA.

ANS: B OBJ: Explain what a PACS is and how it is used.

• Teleradiography incorporated to produce radiographic images.
• satellite feeds
• cable lines
• T1 cables
• telephone lines

ANS: D OBJ: Explain what a PACS is and how it is used.

• One of the early goals related to the development of PACS was to
• reduce costs related to overstaffing. 2 / 4

• allow radiologists to read stat films from a hospital while at home.
• provide a means to move battlefield images to an established hospital.
• eliminate the need for chemical processing.

ANS: C OBJ: Explain what a PACS is and how it is used.

• CR acquires an image through
• conventional film/screen processing using a digital scanner.
• the heating of a thermoluminescent device.
• an electrically charged cassette.
• the use of a storage phosphor plate.

ANS: D OBJ: Describe the latent image formation process for PSP image capture.

• Storage phosphor plates are similar to
• intensifying screens.
• xeromammography cassettes.
• flat panel detectors.
• cardboard cassettes.

ANS: A OBJ: Describe the latent image formation process for PSP image capture.

• In a DR system, which of the following are needed to produce a radiographic image?
• X-ray absorber and a CCD
• Intensifying screen and a TFT
• Storage phosphor plate and a CCD
• Storage phosphor plate and a TFT

ANS: A OBJ: T

CE omS pT aB reA aN ndK cS onE trL aL st E thR e .laC teO ntM image formation processes.

• The two elements needed to convert light signals into an electrical signal while using indirect

capture DR are TFT and

• photodiodes.
• photoconductors.
• phototransistors.
• photostators.

ANS: A OBJ: Compare and contrast the latent image formation processes.

• The x-ray absorber typically used in direct capture DR is a
• photodiode.
• phototransistor.
• photoconductor.
• photoelectron.

ANS: C OBJ: Compare and contrast the latent image formation processes.

• Technologist efficiency ratings are generally the same when comparing conventional

radiography with radiography.

• computed
• digital

ANS: A OBJ: Compare and contrast the latent image formation processes. 3 / 4

• Compared with a 90-second processing time found in conventional radiography, image

acquisition with DR has now been reduced to

• instantaneous acquisition.
• 1–2 seconds.
• 3–5 seconds.
• 6–8 seconds.

ANS: C OBJ: Compare and contrast the latent image formation processes.

• The active element in a storage phosphor is
• lithium.
• glutaraldehyde.
• europium.
• barium fluorohalide.

ANS: D OBJ: Compare and contrast the latent image formation processes.

• In reference to PSP image capture, to release the latent image, which of the following devices

is scanned over the phosphor plate?

• Photomultiplier tube
• Fluorescent light
• Focused laser light
• Lithium crystal

ANS: C OBJ: Describe the latent image formation process for PSP image capture.

• Which of the following be

T st E d S es T cr B ib A e N s t K h S e E se L qu L e E n R ce .f C or O P M SP image capture?

• Phosphor plate, focused laser light scanner, photomultiplier, digital-analog

converter, review station

• Phosphor plate, focused laser light scanner, photodensitometer, digital-analog

converter, review station

• Phosphor plate, focused laser light scanner, photodensitometer, analog-digital

converter, review station

• Phosphor plate, focused laser light scanner, photomultiplier, analog-digital

converter, review station ANS: D OBJ: Compare and contrast the latent image formation processes.

• X-ray energy related to direct capture DR will stimulate a , which eventually is

changed into an electrical signal.

• photodensitometer
• scintillator
• TFT array
• charge-coupled device

ANS: B OBJ: Compare and contrast the latent image formation processes.

• The converts x-ray energy directly to a digital electrical signal.
• photoconductor
• photomultiplier
• scintillator
• / 4