In the diagnosis of Crohn's disease in addition to standard enteroclysis the following methods begin to play a part: ultrasound in screening, endoscopy with histology in affections of the colon and scanning using labelled leucocytes 99m Tc. The contribution of further methods (CT, helicine CT, MR and Doppler assessed blood flow through the mesenteric artery) is foreseen, in particular in relation to the further contribution of these methods to make the diagnosis of Crohn's disease more refined and more accurate and also with regard to financial costs.

        Key words: Crohn's disease – diagnosis