A member asked:

What can be seen on a ct chest angiogram with contrast versus one without contrast? does the one with contrast show more or just different things?

5 doctors weighed in across 2 answers

Superior imaging: The use of "contrast" in a ct scan enhances the imaging of the blood vessels. Typically, contrast is an iodine containing liquid, which "blocks" the passage of x-rays. The ability to see the blood vessels is far superior when contrast is used.

Answered 11/15/2013

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Contrast or not: Many blood vessels run through parts of the chest. Without contrast one can not see vessels, where they go, if they are narrowed, etc. Contrast during the ct can dramatically increase the usefulness of the information provided my the scan.

Answered 4/14/2014

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