LRA 221 Digital Imaging|Questions With Correct
Answers|Verified
radiographic detectors are responsible for capturing the aerial image and converting x
rays to an - ✔️electrical signal
within a digital radiography image matrix 1024x1024 refers to - ✔️the number of pixels
in a matrix
which of the listed radiographic mixes creates an image with the smallest pixels -
✔️2048x2048
which of the listed radiographic matrixes would produces the greatest spatial resolution
- ✔️2048x2048
Which radiographic image capture method uses chemical development to produce the
manifest image? - ✔️Film/ screen radiography
Which radiographic image capture method uses an X-ray absorber material coupled
with a thin film transistor, complementary metal oxide semiconductor, or a charge-
coupled device (CCD) to form the digital radiographic image? - ✔️FPD
When X-rays strike a photostimulable phosphor material, _____________ is released. -
✔️Light
The exposure latitude of digital projection radiography responds in a _____________
manner. - ✔️Nonlinear
In what format must images be in so that they can be sent throughout the image viewing
system? - ✔️DICOM
Patient demographics are unimportant because the RIS will automatically identify all
digital images.
true//false - ✔️false
Digitally placed anatomic markers can always be used to determine the correct
anatomic side of the patient.
true//false - ✔️false
Digital systems are less sensitive to scatter radiation than film/screen systems
true//false - ✔️false
An image formed by recording a continuous changing signal is known as: - ✔️analog
, The arrangement of pixels in rows and columns is known as: - ✔️matrix
The amount of tissue included in the image is referred to as: - ✔️field of view
The measurement of the radiation that was incident on the image receptor for a
particular exposure is known as: - ✔️KIND
Contrast resolution is a digital system's ability to: - ✔️Show small difference in gray
values
The difference between the actual exposure and the target exposure is known as the: -
✔️DI Deviation index
Dynamic range is the ability of a digital imaging system to respond to varying levels of
exposure.
true//false - ✔️true
Spatial resolution in digital imaging is dependent on pixel size.
true//false - ✔️true
Which of the following measures the efficiency of a system to convert the X-ray input
signal into a useful output image? - ✔️DQE
graphical representation of a digital image is called a __________________. -
✔️Histogram
The useful signal is determined during which part of image processing? - ✔️histogram
analysis
In digital projection radiography, what process is used to normalize an image that has
been taken with too great of an exposure? - ✔️Automatic rescaling
Window width controls the brightness of the image on the display
true//false - ✔️false
Shuttering the digital image will reduce the exposure to the patient. - ✔️false
Which processing parameter will put together multiple images into one single image for
display? - ✔️Image stitching
Which processing technique will amplify particular known frequencies in an image while
suppressing others? - ✔️Edge enhancement
High-pass filtering
Masking
Answers|Verified
radiographic detectors are responsible for capturing the aerial image and converting x
rays to an - ✔️electrical signal
within a digital radiography image matrix 1024x1024 refers to - ✔️the number of pixels
in a matrix
which of the listed radiographic mixes creates an image with the smallest pixels -
✔️2048x2048
which of the listed radiographic matrixes would produces the greatest spatial resolution
- ✔️2048x2048
Which radiographic image capture method uses chemical development to produce the
manifest image? - ✔️Film/ screen radiography
Which radiographic image capture method uses an X-ray absorber material coupled
with a thin film transistor, complementary metal oxide semiconductor, or a charge-
coupled device (CCD) to form the digital radiographic image? - ✔️FPD
When X-rays strike a photostimulable phosphor material, _____________ is released. -
✔️Light
The exposure latitude of digital projection radiography responds in a _____________
manner. - ✔️Nonlinear
In what format must images be in so that they can be sent throughout the image viewing
system? - ✔️DICOM
Patient demographics are unimportant because the RIS will automatically identify all
digital images.
true//false - ✔️false
Digitally placed anatomic markers can always be used to determine the correct
anatomic side of the patient.
true//false - ✔️false
Digital systems are less sensitive to scatter radiation than film/screen systems
true//false - ✔️false
An image formed by recording a continuous changing signal is known as: - ✔️analog
, The arrangement of pixels in rows and columns is known as: - ✔️matrix
The amount of tissue included in the image is referred to as: - ✔️field of view
The measurement of the radiation that was incident on the image receptor for a
particular exposure is known as: - ✔️KIND
Contrast resolution is a digital system's ability to: - ✔️Show small difference in gray
values
The difference between the actual exposure and the target exposure is known as the: -
✔️DI Deviation index
Dynamic range is the ability of a digital imaging system to respond to varying levels of
exposure.
true//false - ✔️true
Spatial resolution in digital imaging is dependent on pixel size.
true//false - ✔️true
Which of the following measures the efficiency of a system to convert the X-ray input
signal into a useful output image? - ✔️DQE
graphical representation of a digital image is called a __________________. -
✔️Histogram
The useful signal is determined during which part of image processing? - ✔️histogram
analysis
In digital projection radiography, what process is used to normalize an image that has
been taken with too great of an exposure? - ✔️Automatic rescaling
Window width controls the brightness of the image on the display
true//false - ✔️false
Shuttering the digital image will reduce the exposure to the patient. - ✔️false
Which processing parameter will put together multiple images into one single image for
display? - ✔️Image stitching
Which processing technique will amplify particular known frequencies in an image while
suppressing others? - ✔️Edge enhancement
High-pass filtering
Masking
