Clinical utility of In-111 leukocyte imaging in Crohn's disease

Thirty six patients with Crohn's disease were studied with In-111 leukocyte imaging. There was a correlation of the presence of activity on early (4 hour) imaging (r = 0.516, P < 0.001) and on delayed 18-24 hour) imaging (r = 0.457, P < 0.003). In the total group of 36 patients, the results of imaging were useful in the immediate management of 13 patients (36.1%). These included four patients (11.1%) who refused to undergo colonoscopic examination and nine patients (25%), six of whom had previous intestinal resection.