It's my understanding that the electrodes implanted in her head for brain stimulation, are still in place. You might want to ping FL_Engineer for documentation on that.
I read that too and I'm trying to find it. It said soemthing about the fact she couldn't have an MRI because of the electrodes and that the doctor who put them there told Michael that they needed to come out, not stay in because they can cause fluid build up over time. I'll see if I can find it again.
Do you know which company &/or Dr's placed the electrodes in her brain? What's their history?
I read a report by an radiologist on a CSI weblog who looked at her scan or whatever and who doesn't think they are electodes but shunts to relieve pressure. And that the pressure is caused from blood due to an injury to the outside of the head such as being hit in the head.
The link is on the last thread and if I weren't so tired I'd retrieve it. You might be able to google CSI weblogs, though.