Digital Imaging Midterm exam with 169
complete solutions.
Digital Imaging Midterm exam with 169
complete solutions.
Film and intensifying screens are primarily used in:
Computed radiography (CR)
Digital radiography (DR)
Conventional radiography
Picture archival and communication systems - ANSWER Conventional Radiography
Intensifying screens:
absorb light
emit light
absorb scatter
emit positive electrons - ANSWER emit light
The ----- converts x-ray energy directly to a digital electrical signal.
photomultiplier
scintillator
photoconductor
TLD - ANSWER photoconductor
With conventional radiography, optical density is primarily controlled by:
kilovoltage
milliamperage
line voltage
milliamperage-seconds - ANSWER milliamperage-seconds
,Digital Imaging Midterm exam with 169
complete solutions.
Similar to CR, DR can use the existing diagnostic equipment found in today's imaging departments.
True
False - ANSWER False
In conventional radiography film, the sensitivity speck has which electrical charge?
Neutral
Positive
Negative
There is no sensitivity speck in conventional film processing - ANSWER negative
The x-ray absorber typically used in direct capture DR is a
phototransistor
photodiode
photoconductor
photoelectron - ANSWER photoconductor
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 - ANSWER The use of a storage phosphor plate
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 - ANSWER x-ray absorber and a CCD
, Digital Imaging Midterm exam with 169
complete solutions.
All of the following are components of a PACS except:
web access
multiple interfaces
reading stations
independent kilovoltage peak and milliamperage-second stations - ANSWER independent kilovoltage
peak and milliamperage-second stations
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 seconds - ANSWER 3-5 seconds
Who was the first to incorporate digital imaging with the CT scanner?
Paul Lauterbur
Sol Nudelman
Godfrey Hounsfield
M. Paul Capp - ANSWER Godfrey Hounsfield
A Bucky apparatus is required for DR.
True
False - ANSWER False
Storage phosphor plates are similar to:
intensifying screens
xeromammography cassettes
complete solutions.
Digital Imaging Midterm exam with 169
complete solutions.
Film and intensifying screens are primarily used in:
Computed radiography (CR)
Digital radiography (DR)
Conventional radiography
Picture archival and communication systems - ANSWER Conventional Radiography
Intensifying screens:
absorb light
emit light
absorb scatter
emit positive electrons - ANSWER emit light
The ----- converts x-ray energy directly to a digital electrical signal.
photomultiplier
scintillator
photoconductor
TLD - ANSWER photoconductor
With conventional radiography, optical density is primarily controlled by:
kilovoltage
milliamperage
line voltage
milliamperage-seconds - ANSWER milliamperage-seconds
,Digital Imaging Midterm exam with 169
complete solutions.
Similar to CR, DR can use the existing diagnostic equipment found in today's imaging departments.
True
False - ANSWER False
In conventional radiography film, the sensitivity speck has which electrical charge?
Neutral
Positive
Negative
There is no sensitivity speck in conventional film processing - ANSWER negative
The x-ray absorber typically used in direct capture DR is a
phototransistor
photodiode
photoconductor
photoelectron - ANSWER photoconductor
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 - ANSWER The use of a storage phosphor plate
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 - ANSWER x-ray absorber and a CCD
, Digital Imaging Midterm exam with 169
complete solutions.
All of the following are components of a PACS except:
web access
multiple interfaces
reading stations
independent kilovoltage peak and milliamperage-second stations - ANSWER independent kilovoltage
peak and milliamperage-second stations
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 seconds - ANSWER 3-5 seconds
Who was the first to incorporate digital imaging with the CT scanner?
Paul Lauterbur
Sol Nudelman
Godfrey Hounsfield
M. Paul Capp - ANSWER Godfrey Hounsfield
A Bucky apparatus is required for DR.
True
False - ANSWER False
Storage phosphor plates are similar to:
intensifying screens
xeromammography cassettes
