This study is carried out as a prospective cross-sectional study (study I-V and a pilot study) in collaboration between radiology department and gastroenterology department at Herlev Hospital. The study recruit both inpatients and outpatients with known or suspected IBD. The main study will include at least 77 patients, while pilot study will include a minimum of 15 patients. Two experienced radiologists in the diagnosis of diseases gastrointestinal will describe the MRI scans. Interpretation of MRI are performed according to a standard table. Studies I-III will be compared to evaluate effectiveness these studies.