10 Questions
What is the purpose of CT imaging system in amplifying subject contrast?
To make image contrast high.
What is the range of CT numbers for the tissues mentioned in the text?
Approximately -100, 50, and 1000.
Why is the contrast resolution provided by CT considerably better than radiography?
Due to scatter radiation rejection of prepatent and predetector collimators.
What limits the ability of CT to image low-contrast objects?
Size, uniformity of the object, and system noise.
How does the amplified contrast scale in CT imaging benefit the resolution of adjacent structures?
By better resolving adjacent structures that are similar in composition.
How does the CT imaging system amplify differences in subject contrast?
By using a contrast scale with a range of CT numbers
What is the role of scatter radiation rejection in CT imaging?
To improve contrast resolution by rejecting scatter radiation
Explain how the contrast resolution in CT imaging compares to radiography.
CT has considerably better contrast resolution due to scatter radiation rejection.
What factors limit the ability of CT to image low-contrast objects?
The size, uniformity of the object, and system noise
How does the amplified contrast scale in CT imaging aid in resolving adjacent structures?
By better resolving similar composition structures
Test your knowledge on how the CT imaging system amplifies subject contrast to achieve high image contrast. Learn about the range of CT numbers for different tissues and how CT provides better contrast resolution compared to radiography.
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