LRA Quiz Review Chapter 1, 2, 3
Authored by Anthony Guido
Science
University
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23 questions
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1.
MATCH QUESTION
10 mins • 1 pt
Match the following
Define annotation
a computer program process that allows multiple images to be joined when the anatomy is too large for one exposure. The result is a nearly seamless single image.
Define magnification
a process that removes or replaces the background to block distracting light surrounding a digital image. This does not take the place of proper collimation and can be removed to show proper collimation.
Define Veil
Excessive light entering the eye when viewing an image is known as glare
Define Stitching
One technique functions as a magnifying glass in the sense that a box placed over a small segment of anatomy on the main image shows a magnified version of the underlying anatomy. The other technique is a zoom technique that allows magnification of the entire image.
Define Shuttering
allows selection of preset terms and/or manual text input and can be particularly useful when such additional information is necessary.
2.
MATCH QUESTION
1 min • 1 pt
Match the following
Define Masking
accomplished by limiting the number of pixels in a neighborhood of the matrix. Known area-of-interest frequencies can be amplified or high-pass filtered to increase contrast and edge enhancement.
Define Edge Enhancement
different for specific anatomic regions and remain fairly constant from patient to patient.
Define Smoothing
Test
Define Histogram
Control pixel brightness and contrast
Define Window
..also known as low-pass filtering, the result of averaging each pixel's frequency with surrounding pixel values to remove high frequency noise (Carter & Veale)
3.
MATCH QUESTION
1 min • 1 pt
Match the following
Define Spatial Resolution
Test
Define Brightness
Test
Define Contrast Resolution
Test
Define Exposure Index
Test
Define Detective Quantum Efficiency
Test
4.
MATCH QUESTION
1 min • 1 pt
Match the following
Define Depth (Pixel related)
Test
Define Image Level parameters
Test
Define Automatic Rescaling
Test
Define Scintillator
Test
Define a Look-up Table
Test
5.
MATCH QUESTION
1 min • 1 pt
Match the following
Define DICOM
Test
Define FPD
Test
Define PACS
Test
Define Indirect and Direct Capture
Test
Define Dynamic Range
Test
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Can Ambient light affect Monochromatic monitors? T/F
Test
Test
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If a reader does NOT find the collimation edges of an image what will happen to the image?
Test
Test
Test
Test
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