The med students that frequent the rads forum won't be able to help you. Chances are most of the radiology residents don't know much about nucs residencies, either. The fact that you think you can get more responses from OUTSIDE the nucs community concerning nuclear medicine seems a little disconcerting. I think at least on the Nucs forum you may get help from other nucs residents that have posted in the past. If we don't get any bites, I'll be glad to move it back.
Here's my take: Maybe the nucs guys know better-- but general nucs jobs are relatively difficult to come by to begin with. To narrow your scope of practice to only neuro imaging within nuclear medicine is perhaps pigeonholing yourself into too specific a niche. It will be extremely hard for you to find a full time job.
The indications for brain pet, Diamox, metrozamide, brain death studies are relatively limited to begin with and are not studies performed routinely nor in great volumes. If you are interested in neurological imaging specifically, then radiology with a neuroradiology fellowship may be the way to go. You CAN find jobs as a full-time neuroimager as a radiologist. If its the functional aspect of nucs that interests you, functional imaging IS capable with current MRI technology. Furthermore brain CT and MRIs are a routine part of the daily practice of radiology. Moreover, with the advent of CT and MR fusion imaging I think knowledge of the cross sectional anatomy is much more difficult to learn and get comfortable with than how to calibrate SUVs and deciding whether an SUV is elevated or not. When MR-PET comes into prime time, the people with a pure nucs background will be at a severe disadvantage compared to someone from a radiology background with nuclear fellowship training.