A 32-year-old member asked:
can you tell me how contrast make cancer stand out in a ct scan ?
1 doctor answer
Dr. Neil Halin answered
38 years experience Radiology
Vascularity: The contrast makes blood vessels whiter to stand out. Most tumors are hypervascular, they have more blood vessels. This makes them easier to see with contrast. Some tumors are not hypervascular and can be seen because they are less white than the surrounding tissues. Otherwise an MRI may be required to see the tumor.
Answered on May 11, 2018
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