MRI and MRA brain: Yes, an MRI can visualize blood vessels but not well; an MRA (MR angiogram) is the optimal MR test. It uses gadolinium which is not a radio-iodine and is not kidney toxic. Gadolinium can be eliminated slowly however, if a person has kidney impairment, and then the gadolinium can enter dermal tissues. Radiologists are aware.
Answered 9/15/2014
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