A127 DIAGNOSTIC RADIATION EXPOSURE IN PATIENTS WITH INFLAMMATORY BOWEL DISEASE

• Published in: Journal of the Canadian Association of Gastroenterology 2019-03, Vol.2 (Supplement_2), p.255-255
• Main Authors: Langevin, C, Normandeau, L, Bouin, M
• Format: Article
• Language: English
• Subjects: Posters Of Distinction
• ISSN: 2515-2084; 2515-2092
• DOI: 10.1093/jcag/gwz006.126

Abstract Background Because of the chronic and relapsing nature of inflammatory bowel disease (IBD), which often requires characterization with CT scan, IBD patients might be exposed to a large amount of radiation. As a cumulative effective dose ≥ 100 mSv is considered significant for the stochastic risks of cancer, it is important to monitor and control the radiation exposure of the IBD patients. Aims In the present work, we aimed to quantify the mean cumulative effective dose in IBD patients to assess any harmful effects of radiation. Methods This study includes 200 IBD patients, identified retrospectively, from the outpatient clinics of the Centre Hospitalier de l’Université de Montréal between January 1, 2010 and February 15, 2017, from the gastroenterologists’ patients lists. The number and type of each radiology test performed were listed for each patient during the study period and the CED was calculated using our institution’s dose index when available and standardized tables. Results Among the 200 IBD patients, 157 patients had Crohn’s disease (CD), 41 had ulcerative colitis (UC) and 2 had indeterminate colitis. The mean cumulative effective dose (CED) for IBD patients was 23.1 ± 45.2 mSv during a follow-up for an average period of 4.3 years. CED was higher amongst patients with CD than with UC (27.5 ± 49.5 vs 6.8 ± 14.8 mSv; p100 mSv) and all had CD. Conclusions While potentially harmful levels of radiation exposure are of concern in only a small number of patients, strategies to limit such exposure are encouraged when clinically appropriate. Funding Agencies None