Most likely scenario for the CT's? They will do the entire sinus area. It is VERY unlikely that they could even isolate the ethmoid and do it alone if the wanted to, given the nature of the CT equipment. (That's a GOOD thing, by the way, cause when they do a sinus CT, all the sinuses will be "caught" on film.)It sounds like you have a good Doc who is on top of things and wants to do the best for you, so calling them early this morning would also be my suggestion, as it was Marica's.
Hope all is well.
Andrea