GXMO Digital Imaging Principles Study Guide Exam 100% Well Answered.
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Course
GXMO
Institution
GXMO
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 - An...
GXMO Digital Imaging Principles Study
Guide Exam 100% Well Answered.
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
, What are the mathematical calculations used for image construction for a specific examination called? -
Answer Algorithms
What post-processing technique is utilized to remove superimposing structures from the image? -
Answer Subtraction
What percentage is exposure error will result in poor image quality on a digital image? - Answer 50%
What is the term for the graphic display of the range and quantity of pixel values during CR image
processing? - Answer Histogram
If the image matrix is increased and the pixel size is decreased to fill the matrix, what is the effort on
spatial resolution? - Answer Resolution increases
Compared with film-screen image receptors, digital receptors absorb ___________ lower energy scatter
radiation. - Answer More
The most common phosphor used for CR imaging plates is? - Answer Barium fluorohalide bromides
and Iodides with europium activators
When the CR imaging plate is scanned, the phosphors of the latent image release energy in the form of?
- Answer Light
During CR image plate processing the laser frees trapped electrons, allowing them to return to a lower
energy state. This process is known as - Answer Photostimulated luminescence
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
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