核醫臨床造影作業導入ISO 15189認證系統對提升輻射工作安全效益之評估

背景：本研究目的為分析核醫造影室在導入ISO 15189認證系統前後之個人輻射劑量變化，以探討認證系統是否有助於提升輻射工作安全。方法：收集2007年1月至2013年12月之輻射劑量監測結果，進行回溯性分析。依不同年度、不同人員以及認證前後（分認證前（2007-2008年）、認證初期（2009-2010年）及認證後期（2011-2013年）等三階段），進行統計分析。結果與討論：2007-2013年之人員年度總劑量（各人員劑量合計）分別為20.09、24.34、21.09、18.19、21.02、17.09及18.38 mSV。人員劑量以放射師較高（佔67.7%），其次為護理師（32.3%）。認證初期核醫護理師之輻射劑量（0.46 mSV）在導入認證系統後，較認證前（0.65 mSV）呈顯著的降低，而認證後期則放射師之輻射劑量（0.92 mSV）較認證前（1.25 mSV）下降較明顯。認證後期之作業量雖較認證初期增加，但輻射劑量依然能持續下降，其平均每件檢查之劑量（0.0036 mSV）較認證前（0.0046 mSV）明顯減少。每人每月平均劑量，認證前為0.45 mSV，認證初期下降至0.38 mSV（降幅20.6%），而在認證後期則下降至0.31 mSV（降幅31.1%）。結論：研究結果顯示，核醫造影室導入認證作業系統後，每人每月平均輻射劑量顯著降低，每件檢查平均輻射劑量也有所改善，顯示ISO 15189認證系統對於降低輻射工作人員職業傷害，提升職業安全，確實有正面的幫助。

關鍵字

認證系統；輻射；職業傷害

並列摘要

Background: The purpose of this study is to explore the impacts of ISO 15189 accreditation system on the improvement for radiation safety of the nuclear medicine staffs. Materials and Methods: A retrospective analysis was conducted. Collection of the radiation exposure doses was done from the department of nuclear medicine imaging rooms at a regional teaching hospital in Southern Taiwan from January 2007 to December 2013. The data was further analyzed by different type of radiation staffs (radiologic technologist and nuclear medicine nurse), years, and accreditation stages (2007-2008: pre-accreditation stage; 2009-2010: accreditation primary stage; 2011-2013: accreditation advanced stage). Results: The total annual doses (mSV) for nuclear medicine staffs from 2007 to 2013 were 20.09, 24.34, 21.09, 18.19, 21.02, 17.09 and 8.38, respectively. The exposure dose of radiologic technologist is 67.7% and the nuclear medicine nurse is 32.3%. From the pre-accreditation stage to the primary stage, radiation exposure of the nuclear medicine nurse was diminished (0.46 vs. 0.65). At the advanced stage of accreditation, the exposure dose from radiologic technologist was also significantly lower than that at the pre-accreditation stage (0.92 vs. 1.25). The mean exposure dose for the staffs in each test at the advanced stage was significant lower than pre-accreditation stage (0.0036 vs. 0.0046). Moreover, results showed that both of the mean monthly doses per staff (mSV/month/staff) at the primary stage (0.38) and advanced stage (0.31) were lower than at pre-accreditation stage (0.45) apparently. Conclusion: Our results indicated that, after introducing of the accreditation system, both of the mean monthly doses and the mean exposure dose from the nuclear medicine radiation staffs were decreased. Accreditation system based on ISO 15189 was indeed helpful for decreasing the occupational injury from radiation exposure and improving the safety of the staffs.

並列關鍵字

ISO 15189 ； accreditation system ； radiation ； occupational injury

國際替代計量

核醫臨床造影作業導入ISO 15189認證系統對提升輻射工作安全效益之評估

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