6 Questions
What is the purpose of windowing in a CT image?
To limit the number of shades of gray to optimize viewing by the human eye
How does window width (WW) influence CT image presentation?
It artificially defines the number of shades of grey presented to the viewer
What is the role of window level (WL) in a CT image?
It controls the brightness of the CT image
Why can't a CT image display all 5,000–10,000 possible shades of gray?
Due to limitations in human eye perception
When is windowing typically performed in relation to a CT image?
After obtaining, reconstructing, and transferring the image to the viewing workstation
What aspect of a CT image does windowing control?
Contrast
Learn about how the grayscale of CT images is limited to a range of (+1000 to −1000) to make them more easily distinguishable by the human eye. Explore the concept of windowing and how it involves fine adjustments in the image for better viewing.
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