Would a brain that has aphasia be different on an MRI scan than a normal one?

Possibly.... If one had a tumor or stroke involving certain areas of the brain (e.g. Broca's area) you may develop an aphasia and would see an abnormality on mri. However, it is also possible to have an aphasia with no MRI abnormality.

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Would a brain that has aphasia have a different appearance on an MRI scan than a normal one?

Maybe. Following a stroke, hemorrhage, infection or trauma may leave structural alterations visible on MRI scans. Some inherited aphasias are also likely to be visualized. However many cases of aphasia will not be visualizable on standard imagery. Functional MRI and spect might be useful in visualizing some aphasias. Read more...