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A member asked:
What could cause dark spots on the liver during a cat scan?
A doctor has provided 1 answer
Tissue density: Basically speaking, the darker the area the lower the density. Air would be the darkest, water less and bone the lightest. In a non contrast CT, bile filled areas such as the ducts gall bladder or cysts may be the darkest. This will change if an IV contrast is added during the examination. There are always variations to this based on different pathologies
Answered 6/26/2014
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