Abdominal bloating is one of the most common symptoms we encounter in daily clinical practice. When no organic cause is observed, functional constipation or irritable bowel syndrome (IBS) is primarily considered; however, chronic intestinal pseudo-obstruction (CIPO), a life-threatening motility disorder, may also be included. Conventional abdominal CT or plain X-ray exams can only evaluate the gastrointestinal tract with “static images.” Cine-MRI (CMRI)Cine-MRI (CMRI) is an emerging technique that allows observation of the organ movement as “videos” with a temporal resolution of <1 second. In 2013, a pilot study comparing the small intestinal motility between patients with CIPO, IBS, and healthy individuals by CMRI and evaluating its usefulness was performed. In this study, small intestinal motility was quantitatively assessed by mean luminal diameter (MLD), contraction rate (CR), and contraction cycle, using 30 coronal frames over 15 seconds with T2-weighted images. As a result, CMRI clearly detected contractility impairments, including especially marked dilatation of MLD and extremely low CR in CIPO patients. CMRI is a useful modality that allows direct assessment of the actual “movement” of the intestines without radiation exposure. In clinical practice, CMRI is expected to be widely used for diagnosing CIPO, evaluating the effects of therapeutic interventions, and follow-up.