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Old 10-06-2017, 03:31 PM   #1
Marvinette
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Confused Question about MRA and catscans

I had an MRA which showed a possible small aneurysm in left carotid artery to brain. So I then had cat scan with contrast which ruled out the aneurysm but said I had tortuosity of the left carotid artery to brain. My neurologist wants to do another MRA in three months. My question is why. Won’t this just lead to the same problem of seeing the possible aneurysm and then having to rule it out with another cat scan. I have already had four scans of brain in two weeks. It seems like overkill which would give me too much radiation. Any help with this question would be appreciated.
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Old 10-06-2017, 07:38 PM   #2
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Hi Marvinette

Welcome to NeuroTalk .

MRA is a form of MRI - it involves radio-frequency radiation. There is no evidence that I know of that radio-frequency radiation poses a health risk.

CAT scans are different - they involve X-rays which do carry a potential health risk.

It might be an idea if you discussed the differences between MRA and CAT scans with your neurologist - that could help you to make informed choices.

This information about MRA might help you Magnetic Resonance Angiography (MRA)
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Last edited by kiwi33; 10-07-2017 at 03:25 AM. Reason: Added a link.
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Old 10-07-2017, 08:07 AM   #3
Marvinette
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Confused

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Originally Posted by kiwi33 View Post
Hi Marvinette

Welcome to NeuroTalk .

MRA is a form of MRI - it involves radio-frequency radiation. There is no evidence that I know of that radio-frequency radiation poses a health risk.

CAT scans are different - they involve X-rays which do carry a potential health risk.

It might be an idea if you discussed the differences between MRA and CAT scans with your neurologist - that could help you to make
Thanks again. I do understand about the no radiation from MRA but the problems is they seem to want to keep on doing the cat scan after the MRA because it ruled out what MRA says. thereby I get too many catscans.

So the question was if anyone else kept on getting scans to look for aneurysm s when they already ruled it out. It seems like Overdiagnosis when they want to use catscans because all my MRA s gave unclear results.
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