Digital Radiography and PACS - Chapter 1 - Introduction to Digital Radiography and PACS
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Course
DIGITAL RADIOGRAPHY
Institution
DIGITAL RADIOGRAPHY
In medicine, one of the first uses of digital imaging was with the introduction of the CT scanner by __________ __________ in the 1970's. Godfrey Hounsfield
The basic definition of digital imaging is: Any imaging acquisition process that produces an electronic image that can be viewed and manipula...
Digital Radiography and PACS - Chapter 1 -
Introduction to Digital Radiography and PACS
In medicine, one of the first uses of digital imaging was with the introduction of
the CT scanner by __________ __________ in the 1970's.
Godfrey Hounsfield
The basic definition of digital imaging is:
Any imaging acquisition process that produces an electronic image that can be
viewed and manipulated on a computer.
Conventional radiography uses __________ and __________ __________ in the
image formation process
film; intensifying screens
True or False: In conventional radiography, film is placed on one, or between two
intensifying screens that emit light when struck by x-rays.
True
In conventional radiography, the light exposes the film in proportion to the
amount of __________ of the __________ incident on the screen.
energy; x-rays
,True or False: In conventional radiography, the film is processed electronically,
and the manifest image appears on a computer screen.
False (processed chemically, appears on the sheet of film)
In conventional radiography, the completed film is taken to a __________ and
placed on a __________ __________ for interpretation.
radiologist; light box
For conventional radiography and PSP systems that use a cassette, and for
__________ __________ __________, a traditional X-ray room with a table and a
wall bucky can be used.
portable flat pan detector (FPD) systems
True or False: Because both conventional radiography and cassette-based PSP
systems use cassettes that must be taken to a processor/reader, technologists
often rate them the same in terms of ease and efficiency.
True
Both fixed and portable FPD systems have an advantage because the processing is
done where? How soon will the technologist know if the image needs to be
repeated?
, Right at the room's console; three to five seconds
In conventional radiography, a __________ is placed inside a __________ that
contains an intensifying screen.
film; cassette
When the x-rays strike the __________ __________, light is produced.
intensifying screen
The light photons and the X-ray photons interact with the __________
__________ __________ in the film emulsion, and an electron is ejected from the
__________.
silver halide grains; halide.
What is film emulsion?
The chemicals that you dip intensifying screens into during conventional
radiography.
In conventional radiography, the ejected electron is attracted to the __________
__________. The ___________ now has a negative charge and __________
__________ are attracted to equal out the charge.
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