Ultrasound for detection of complications and evaluation of treatment response in inflammatory bowel disease (IBD)?

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Ultrasound (US) can be performed at the point of care by the treating physician, is safe, well tolerated and, therefore, canbe repeated as often as clinically required and shortens the time to decision. An invaluable advantage of US is that the imagingis real-time and pathophysiological phenomena can be visualized dynamically. In addition, the multiparametric capabilities ofUS facilitate the evaluation of intestinal, peri-intestinal and some of the extra-intestinal manifestations of inflammatory boweldiseases (IBD).In the current series of papers a synopsis of recommendations for ultrasound in IBD guidelines, ultrasound parameters ininflammatory bowel disease including activities scores, the value of contrast enhanced ultrasound (CEUS), small intestinalcontrast ultrasound (SICUS) and elastography, perineal ultrasound (PNUS), endoscopic ultrasound (EUS) including endorectal ultrasound (ERUS) and interventional ultrasound (INVUS) have been discussed and illustrated.This review discusses advantages, accuracy and limitations of ultrasound techniques for the diagnosis of intestinal, periintestinal and extra-intestinal complications of MC and CU and for monitoring treatment response.