[Dave S]

She's had a CT scan but never - not once - a PET scan or an MRI.

She cant have an MRI. She has implants in her brain from years ago when they were trying to rehabilitate her.

[Texas Deb]

Then it appears that these neurologists cannot make a definitive diagnosis of a PVS if they are unable to perform the tests that would determine the FUNCTIONING of what is left of Terri's cerebral cortex.