Hi,

I did speak with the staff today and they said he would have a device to push if he needed assistance. They did say getting up and down would really prolong the test because they would have to set everything back up again. Hopefully he'll be able to manage by turning his head to clear his mouth.
They said each scan segment is several minutes long, so if he can hold off until the end of each scan phase he should be all right.

Vicki