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A member asked:
Does an mri of the brain also show the arteries?
5 doctors weighed in across 2 answers
Magnetic resonance : An MRI of the brain shows the blood vessels indirectly because the moving blood creates a "signal void". A magnetic resonance angiogram of the brain shows the arteries more directly. The vessels may be detected through the administration of contrast or may be detected due to the movement of blood within the vessels. This latter phenomenon is referred to as flow related enhancement.
Answered 2/23/2020
4.8k views
MRI or MRA? CTA angi: The question's somewhat vague. Are you asking about MRI vs. MRA (Magnetic resonance angiogram)? MRI can show changes in tissue that are effects of arterial blockage. The actual arteries themselves are seen by MRA directly. The size of artery blocked determines whether or not it can be seen on MRI. More proximal = larger artery = easier to see blockage or a flow void or contrast on MRI.
Answered 5/15/2019
2.1k views
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