Since this entry is for the abbreviation and not for the entire phrase, I think the current term should be moved down in the term list, and the appropriate abbreviation(s) for MRI should appear as the first term.
Also, the entries for MRI and MRI scan should be better aligned. Currently, one of them says "imagen de" and the other one says "imagen por".
Also, the entries for MRI and MRI scan should be better aligned. Currently, one of them says "imagen de" and the other one says "imagen por".