CT image artifacts
Quiz
•
Science
•
12th Grade
•
Practice Problem
•
Easy
JULIANA RADZI
Used 6+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main cause of beam hardening artifacts in CT imaging?
Inadequate collimation
Overexposure of the detector
Scattering of X-rays
Preferential absorption of lower-energy photons
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can metallic artifacts be reduced in CT images?
Applying a sharpening filter to the images
Using metal artifact reduction techniques such as iterative reconstruction algorithms, dual-energy CT scanning, and metal artifact reduction software.
Using water instead of contrast dye
Increasing the exposure time
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary reason for motion artifacts in CT scans?
External interference
Patient movement
Incorrect calibration
Equipment malfunction
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are streak artifacts in CT imaging and how do they affect image quality?
Streak artifacts are caused by low attenuation materials, leading to complete data acquisition and appearing as dark streaks on the image.
Streak artifacts are caused by high attenuation materials, leading to incomplete data acquisition and appearing as bright streaks on the image.
Streak artifacts are caused by software errors, resulting in a pixelated image with no streaks visible.
Streak artifacts are caused by motion artifacts, resulting in a blurry image with no streaks present.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Explain the concept of ring artifacts in CT images.
Ring artifacts in CT images are caused by the non-uniform response of the detector elements.
Ring artifacts in CT images are caused by the scanner being too new.
Ring artifacts in CT images are caused by the patient moving during the scan.
Ring artifacts in CT images are caused by the uniform response of the detector elements.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can noise artifacts be minimized in CT imaging?
By using outdated equipment
By increasing the exposure time
By not calibrating the scanner
By increasing the number of projections, using appropriate filtration techniques, optimizing scanning parameters, and employing advanced reconstruction algorithms.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the impact of beam hardening artifacts on CT image quality?
Beam hardening artifacts improve CT image quality by enhancing contrast resolution
Beam hardening artifacts have no impact on CT image quality
Beam hardening artifacts reduce noise in CT images
Beam hardening artifacts can degrade CT image quality by reducing contrast resolution and introducing inaccuracies in Hounsfield unit measurements.
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