I have had a CT Enterography and an MRI Enterography, and on both exams inflammation causing a stricture at the J Pouch inlet was visible. The MRI Enterography is the better of the two exams for diagnostics, from what I was told. It's a much longer procedure, however, when including the interval times of all the contrast plus the different sequences on imaging as they wait for the contrast to pass through the bowel. My MRIE was close to 3 hours long from when I got to the facility to when I left.