Violante Francesco S, Romano Paolo, Bonfiglioli Roberta, Lodi Vittorio, Missere Maurilio, Mattioli Stefano, Raffi Giovanni B
Occupational Health Unit, S.Orsola-Malpighi Hospital, University of Bologna, Italy.
Int Arch Occup Environ Health. 2003 Sep;76(7):529-32. doi: 10.1007/s00420-003-0443-8. Epub 2003 Jul 8.
To investigate whether healthcare workers routinely exposed to low-level ionizing radiation have a higher prevalence of thyroid nodularity.
Presence of thyroid nodularity, as assessed by 10-MHz neck ultrasonography, was compared with accumulated radiation doses of 579 exposed university hospital workers (M:F 350:229) obliged to wear a personal dosimeter.
Nodules were detected in 141/579 (24.3%) subjects. Mean accumulated dose was not different among subjects with and without nodules (14.19+/-28.00 mSv vs 17.71+/-32.89 mSv; P=0.12). Duration of occupational exposure (<10 years vs 10-19 years vs >or=20 years) did not affect prevalence of nodularity. At multivariate analysis, only female gender and age were significant risk factors.
Mildly exposed health workers do not appear to incur any excess risk of thyroid nodularity.
调查经常暴露于低水平电离辐射的医护人员甲状腺结节的患病率是否更高。
通过10兆赫颈部超声检查评估甲状腺结节的存在情况,并将其与579名必须佩戴个人剂量计的大学医院工作人员(男:女为350:229)的累积辐射剂量进行比较。
在141/579(24.3%)名受试者中检测到结节。有结节和无结节的受试者之间的平均累积剂量没有差异(14.19±28.00毫希沃特对17.71±32.89毫希沃特;P=0.12)。职业暴露时间(<10年对10 - 19年对≥20年)不影响结节的患病率。在多变量分析中,只有女性性别和年龄是显著的危险因素。
轻度暴露的医护人员似乎不会增加甲状腺结节的额外风险。