9 doctors weighed in:

What can a mra detect that a brain MRI cannot detect?

9 doctors weighed in
3 doctors agree

In brief: Vascular disease

Mra looks at moving blood in the arteries of the brain and can help in the diagnosis of vascular narrowing from atherosclerosis, or anerysms, and arteriovenous malformations (avm).
Though an MRI may detect large aneurysms and if contrast is given suggest avm, mra is much more sensitive than MRI when investigating vascular anatomy. Mra does have its limits, small aneurysms can't be detected.

In brief: Vascular disease

Mra looks at moving blood in the arteries of the brain and can help in the diagnosis of vascular narrowing from atherosclerosis, or anerysms, and arteriovenous malformations (avm).
Though an MRI may detect large aneurysms and if contrast is given suggest avm, mra is much more sensitive than MRI when investigating vascular anatomy. Mra does have its limits, small aneurysms can't be detected.
Dr. Jonathan Dissin
Dr. Jonathan Dissin
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1 comment
Dr. Philip Chao
MRA are always improved by doing them at higher field strength. 3T is the best clinically available strength for MRA.
Dr. Joseph Accurso
Radiology
2 doctors agree

In brief: MRA shows arteries

Mr angiography (mra) is an MRI which uses special sequences/techniques to highlight the arteries in the area scanned to look for abnormalities such as aneurysms.
Like any test, it is not 100% accurate, but performed correctly and interpreted by a qualified radiologist, it is a great test to screen for arterial abnormalities.

In brief: MRA shows arteries

Mr angiography (mra) is an MRI which uses special sequences/techniques to highlight the arteries in the area scanned to look for abnormalities such as aneurysms.
Like any test, it is not 100% accurate, but performed correctly and interpreted by a qualified radiologist, it is a great test to screen for arterial abnormalities.
Dr. Joseph Accurso
Dr. Joseph Accurso
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Dr. Peter Nefcy
Radiology

In brief: Vascular disease

In a standard set of MRI images, the blood vessels can be tortuous or poorly seen, and this can obscure blood vessel diseases such as dissection, occlusion and aneurysm.
This limitation can be overcome with special techniques, especially on the newest MRI machines. However, almost all the MRI machines can do MRA studies, with or without IV contrast, for a better evaluation of the blood vessels.

In brief: Vascular disease

In a standard set of MRI images, the blood vessels can be tortuous or poorly seen, and this can obscure blood vessel diseases such as dissection, occlusion and aneurysm.
This limitation can be overcome with special techniques, especially on the newest MRI machines. However, almost all the MRI machines can do MRA studies, with or without IV contrast, for a better evaluation of the blood vessels.
Dr. Peter Nefcy
Dr. Peter Nefcy
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