Brain Mri; Gre Trauma Ax, Question

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Hi, I don't really know where to post this and am hoping someone could explain this. My son had brain mri, no results yet. One of the set of images has a title; gre trauma ax. I looked up gre and am assuming ax means axial, but what about the trauma part? Any clue would be appreciated.I was thinking it could be the protocol for mri, but wondering why the other test did not also say trauma. Is this possibly indication of trauma? Or simply protocol. This is the order of mri of brain on disc. Thank-you! Diana
mr ax stir
t1 ax
flair cor
t1 cor post
sag t1
gre trauma ax
t1 ax post
t2 ax
post t1 fs cor thin
cor stir
post t1 fs ax thin
Thank-you,
Diana