most places do have some kind of imaging, but not all neuroimaging resources are created equal. it depends what you want to focus on in grad school- if you want to do ERP research, then it's probably not going to restrict you too much, but if you want to focus on something like MRI or PET, some schools are going to have much more than others. AJ is right about not restricting yourself to one modality, though.
If you know of clinical programs that are doing more neuroscience-focused work in schizophrenia, it may be possible to do research with some of the same people in a cognitive neuroscience or neuroscience program instead of clinical. So, you may not need to look at different schools. However, if you have specific researchers in mind who do advise people through multiple programs, I would check with them about which program they recommend. I found that some of my POIs were listed as accepting students through 2 or 3 programs, but told me that due to funding, etc. they mostly only accept through one of them.
As far as actual schools go, off the top of my head a couple places with strong MRI resources that also have a lot of schizophrenia research are UNC, Washington University in St. Louis, Minnesota, and UCLA.
