Objective: To investigate the individual irridiateddose levelandhealth statusofoccupational externalexposureamong radiationworkers inThreeA hospitals ofZhejiangprovince,andprovideevidence for occupationalhealthmanagement. Methods: 367 different typesof radiationworkerswereexperienced thedose monitoring and health examination from January toDecember, 2015, according to the requirements of"SpecificationsofIndividualMonitoring forOccupationalExternalExposure"and"Specifications forOccupational healthsurveillance forradiationworkers".The resultsofdosemonitoring,chromosomeaberration rate, lensopacity rate,hemogramand thyroid functionwerestatisticallyanalyzed. Results: Theannualeffectivedoseamong radiation workers fromZhejiangprovince in2015was0.13mSv,98.91%of them less than1mSv,whichunder the limit standardofstate(20mSv/a).Thechromosomeaberration(dicentric)detection rateswere7.41%and4.35%, from nuclearmedicinegroupand interventionalgroup respectively,whichhigher thandiagnostic radiologygroup, the differencewasstatisticallysignificant(χ(2)=13.686,8.092,P<0.01).Besides,1caseofsuspiciouschronic radiation dermatitiswas found in the interventiongroup.Radiation lengthhadsignificanteffecton lensopacity rate(P<0.01), lensopacity increasedwith the increasing lengthof the linear trend (χ(2)trend=16.363,P<0.01),and the incidence ofabnormalthyroid function theabnormalrateof lymphocyte ratiohad significantdifferenceamong theagegroups (P<0.05). Conclusion: Although, theoccupationalexternalexposureamong radiationworkersinThreeAhospitals ofZhejiangprovince issafe, long-term lowdosesofionizing radiation stillhascertainhealtheffectson the fieldof nuclearmedicineand interventionalradiologystaff,suchaseye lens,cytogenetics,nailsandskin.
目的： 了解浙江省三甲医院放射工作人员职业性外照射个人剂量水平与健康状况，为职业健康管理提供依据。 方法： 于2015年1至12月，按照《职业性外照射个人监测规范》和《放射工作人员职业健康监护技术规范》等要求，对该省部分三甲医院367名不同工种放射工作人员进行剂量监测和职业健康检查。分析剂量检测结果、染色体畸变率、眼晶状体混浊率、外周血象及甲状腺功能等指标。 结果： 该省2015年部分放射工作人员人均年有效剂量为0.13 mSv/年，98.91%放射工作人员小于1 mSv/年，均在国家规定限值（20 mSv/年）以下；核医学组与介入放射组工作人员染色体型畸变（双着丝粒体）检出率分别为7.41%、4.35%，高于诊断放射学组，差异有统计学意义（χ(2)=13.686、8.092，P<0.01），介入组中发现1例疑似慢性放射性皮炎；放射工龄对晶状体混浊检出率有明显影响（P<0.01），晶体混浊率随着工龄的增长而增高（χ(2)(趋势)= 16.363，P<0.01），甲状腺功能异常率、淋巴细胞比值异常率在工龄组间差异有统计学意义（P<0.05）。 结论： 该省三甲医院放射工作人员职业照射剂量水平是安全的，但从眼晶状体、细胞遗传学、指甲和皮肤等辐射敏感指标观察，长期低剂量电离辐射仍然对从事核医学与介入放射工作人员的健康有一定影响。.
Keywords: Chromosomes; Dosemonitoring; Healthstatus; Radiationworkers.