EPI-CT scan cohort
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EPI-CT is a multinational cohort study of children and young adults who have undergone at least one computed tomography (CT) scan before the age of 22 years. It comprises three main parts: 1) an epidemiological cohort study assessing cancer effects of radiation exposure from CT; 2) a dosimetry system to evaluate individual doses and related uncertainty, and supporting dose reduction and optimisa on strategies; 3) a pilot study to evaluate the feasibility of applying diferent biomarkers of hypersensitivity in young patients exposed to low doses from CT. Cohort type: International cohort comprising 1,163,571 patients from BE, DK, FR, DE, NL, NO, ES, SE and GB, who have undergone CT examination. Age/follow-up: - age at exposure: from 0 to 22 years - mean age at the first examination: 10 years, -mean age at the end of cur- rent follow-up: 20 years - follow-up period varies by country and ranges from 1973 to 2015 Data available: -Individual organ doses due to external X-ray irradiation, including uncertainty analy-sis; - cancer incidence; -vital status (except in Ger-many and partially in FR; -socioeconomic status availa-ble in BE, FR, NL, ES and GB -cancer predisposing syndromes available in FR, NL and NO.
EPI-CT是一项针对22岁前接受过至少一次计算机断层扫描(computed tomography,CT)的儿童与青年人群的跨国队列研究。该研究包含三个核心组成部分:1)一项流行病学队列研究,用于评估CT辐射暴露的致癌效应;2)一套剂量学系统,可评估个体辐射剂量及其相关不确定性,并为辐射剂量降低与优化策略提供支撑;3)一项预试验,用于评估在接受CT低剂量暴露的青年患者中应用不同超敏性生物标志物的可行性。 队列类型: 国际队列,涵盖来自比利时(BE)、丹麦(DK)、法国(FR)、德国(DE)、荷兰(NL)、挪威(NO)、西班牙(ES)、瑞典(SE)及英国(GB)的1,163,571名接受过CT检查的患者。 年龄与随访情况: - 暴露时年龄:0至22岁 - 首次检查平均年龄:10岁 - 当前随访结束时平均年龄:20岁 - 随访周期因国家而异,时间跨度为1973年至2015年 可用数据: - 外部X射线照射导致的个体器官剂量(含不确定性分析); - 癌症发病情况; - 生存状态(德国除外,法国部分数据缺失); - 比利时、法国、荷兰、西班牙及英国可提供社会经济地位数据; - 法国、荷兰及挪威可提供癌症易感综合征相关数据。




