Inflammatory bowel disease (IBD) defines a group of chronic disease which affect part or the entirety of the gastrointestinal tract. The main clinical presentations are Crohn's disease and ulcerative colitis, both being of multifactorial etiology. They are characterized by a prolonged clinical course with periods of remission and relapse, overlapping in some symptoms of gastrointestinal distress, such as abdominal pain, diarrhea and fatigue. Patient workup includes physical examination, endoscopy, histological, radiological and biochemical testing. The main method of diagnosing is currently ileocolonoscopy with biopsy for patohistological analysis, but cross-sectional imaging like computerized tomography (CT) and magnetic resonance imaging (MRI) is gaining importance in diagnostics and follow-up of patients with IBD. Cross-sectional imaging is useful for analysis of both intra- and extraluminal changes in the gastrointestinal tract, with the ability of analyzing extraintestinal manifestations of disease and inflammatory status (active or chronic). Conventional radiological imaging (small bowel follow-through, enteroclysis, barium enema) are largely abandoned today because of procedural complexity and large doses of ionizing radiation, with lower sensibility and specificity than modern cross-sectional imaging. CT is widely available and give high resolution images in a very short time span, which makes them applicable in emergency situations, but their negative side is exposure to ionizing radiation. Aside from standard CT-s of the abdomen and pelvis, protocols like CT enterography, enteroclysis and colonography have also been developed. MRI imaging is gaining importance because of the lack of ionizing radiation, making it suitable for the pediatric population. Numerous imaging modalities allow for soft-tissue analysis and assessment of inflammation. MR enterography has shown to be the gold standard for Crohn's disease evaluation. The main problems with MRI are high costs, longer acquisition times, more respiratory artifacts and being contraindicated in patients with ferromagnetic foreign bodies. CT and MRI allow for imaging the entirety of the gastrointestinal tract in a noninvasive way. Ultrasound (US) is currently less used because of variability in sensitivity and specificity, and limitations on which parts of the bowel are accessible to visualize, but the main advantages are wide availability, lower costs, it is noninvasive and doesn't use ionizing radiation.