The CT scan doesn't add much. I don't see a name label on it, it's blurry, and it's flipped backwards. Plus it's only one image out of what is probably 15 or 20 cuts through the brain, where are the other cuts? People will read into this CT what they want.
If any of this is truly in dispute, the only course that is sane and humane is to test Terri in any way that might be useful.
There's no hurry about killing her. In fact, when people are in such an all-fired hurry to kill a perfectly harmless disabled women, it only attracts the deepest suspicion about their motives.