it'd be possible, but remember you gotta put a pump in there along with a radiator....you can go and get a small little 80mm radiator and that'd help on space but of course cut down on performance...you could always put the rad at the front of the case where that front fan is...you might have to do something to make room though....it seems like the place for the harddrives would prevent you from putting a radiator there with the fan ontop unless you could put the rad where the fan is, and then the fan on the outside fron of the case or something along those lines....with a mid-tower I'd definitely suggest a T-line and not try to fit a reservoir in there unless you had the reservoir outside the case or something like that.
Basically with a mid-tower prepare to do some planning and/or modding to make it all work is all I'm saying