MRI prominenet cerebral folia

My friend's MRI reveals bilateral prominent cerebral folia no other abnormalities were shown on MRI impression.

She has history of fainting since age of 10 and had mate with a rail accident when she was approximately 24 year old, where she got impact on right side of her head. She was unconscious for around 10 to 15 min & had clinch teeth. There was lot of bleeding from right side of her head where there was cut due to injury. When we took her back to our apartment she vomited and was feeling very week. Next day we took her to hospital. No stitches were done she was advised rest and some medications. Eventually she recovered and joined back college after 4 days. We then left collage and could not see her for a long period of time. I mate her after 15 years and noticed that she has problem with recollecting things. When I asked her she mentioned to me about her concern about this memory laps and that she has done the MRI. Do you think any thing is serious?