Comparison of scintigraphy with indium-111 leukocyte scan and ultrasonography in assessment of x-ray-demonstrated lesions of crohn's disease

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Abstract
The aim of this study was to compare the results obtained with an indium-111 scan with those obtained with less expensive and harmless ultrasonography to evaluate the location and inflammatory activity of Crohn's disease. Thirty-one patients previously studied with x-ray underwent abdominal111In scans and ultrasonography (US). Sensitivity and specificity of US in detecting lesions seen with111In scan were 77% and 92.8%, respectively. Sensitivity and specificity of111In scan in detecting x-ray-defined lesions were 69.2% and 92.7%; the figures for US were 73% and 93.3%, respectively. Considering the evaluation of disease activity, ultrasonographic bowel wall thickness was significantly related to scintigraphic intensity of emission (r=0.75 P111In scan.