Early MRI Prediction of Crohns

The investigators plan to evaluate novel MRI techniques to measure: 1) mesenteric/intestinal blood flow using phase-contrast cine MRI, 2) intestinal motility (peristalsis) using dynamic cine MRI, and 3) bowel wall perfusion and molecular water diffusion. Precise objective measurements of diseased bowel blood flow (in ml/min) and bowel motility (in contractions per minute) are not currently used in the clinical care of CD patients, while diffusion-weighted imaging is typically used in a qualitative manner. None of these techniques have been evaluated for predicting eventual response to therapy or correlated with endoscopic mucosal healing in pediatric or adult CD.