Research is always a good thing to have, but there is no garantee that the neuroscience fellowship at NYCOM will help you get into rads. I'm not sure what type of work Dr. Halas and his team are doing now, but if you somehow find something applicable to imaging, it might be worth it.
Actually, the anatomy fellowship is much more applicable to radiology. As you are probably aware, two anatomy fellows matched into allopathic radiology programs last year.
I agree with the feeling that, whatever you decide to do, it should be because you enjoy it, not because you think it will appeal to a radiology PD.