GXMO DIGITAL IMAGING PRINCIPLES
QUESTIONS AND ANSWERS 100%
CORRECT
The first step in the digital imaging process is - ANSWER-Acquisition
The smallest component of an image matrix, that represents a specific location in the
patient is a - ANSWER-Pixel
Adjustment of window level of a digital image viewed on the monitor allows adjustment
of the image - ANSWER-Brightness (density)
Increasing the window width of a digital image on the monitor - ANSWER-Decrease the
contrast of the image
Matrix size is the major determinant of image - ANSWER-Resolution
Digital image noise from quantum mottle can be decreased by - ANSWER-Increasing
the exposure
In ____________ image formation the analog to digital conversion step is eliminated -
ANSWER-Direct digital radiography (DR)
Where is the latent image formed in computed radiography? - ANSWER-In the
photostimulable Phosphor
What type of laser is used to release the energy stored in the CR phosphors? -
ANSWER-Helium-neon
In a CR system, what is the device that collects, amplifies and converts the released
light to an electronic signal? - ANSWER-The photomultiplier tube
Prior to being reused, the CR imaging plate must be - ANSWER-Exposed to intense
light
The histogram generated from the image data allows the digital imaging system to find
the - ANSWER-Minimum signal within the anatomic area of interest
Maximum signal within the anatomic area of interest
Relative distribution of the pixel values
The ideal exposure range for a digital IR is from - ANSWER--30 to +50%
QUESTIONS AND ANSWERS 100%
CORRECT
The first step in the digital imaging process is - ANSWER-Acquisition
The smallest component of an image matrix, that represents a specific location in the
patient is a - ANSWER-Pixel
Adjustment of window level of a digital image viewed on the monitor allows adjustment
of the image - ANSWER-Brightness (density)
Increasing the window width of a digital image on the monitor - ANSWER-Decrease the
contrast of the image
Matrix size is the major determinant of image - ANSWER-Resolution
Digital image noise from quantum mottle can be decreased by - ANSWER-Increasing
the exposure
In ____________ image formation the analog to digital conversion step is eliminated -
ANSWER-Direct digital radiography (DR)
Where is the latent image formed in computed radiography? - ANSWER-In the
photostimulable Phosphor
What type of laser is used to release the energy stored in the CR phosphors? -
ANSWER-Helium-neon
In a CR system, what is the device that collects, amplifies and converts the released
light to an electronic signal? - ANSWER-The photomultiplier tube
Prior to being reused, the CR imaging plate must be - ANSWER-Exposed to intense
light
The histogram generated from the image data allows the digital imaging system to find
the - ANSWER-Minimum signal within the anatomic area of interest
Maximum signal within the anatomic area of interest
Relative distribution of the pixel values
The ideal exposure range for a digital IR is from - ANSWER--30 to +50%
