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頁籤選單縮合
題 名 | Calibration of High Dose Rate Source Activity=校驗高劑量率射源活度 |
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作 者 | 林芳仁; 涂振邦; 蕭安成; 吳學鼎; | 書刊名 | 中華放射線醫學雜誌 |
卷 期 | 24:2 1999.04[民88.04] |
頁 次 | 頁57-60 |
分類號 | 414.93 |
關鍵詞 | 高劑量率; 近接治療; 活度; High dose rate; Brachytherapy; Activity; |
語 文 | 英文(English) |
中文摘要 | 從1992年10月至1997年8月,本科共驗收測試完成15顆銥-192的新射源,用來做高劑量率的體腔內治療。NEL 2571 0.6cc游離腔,Keithley 35617電量計和校驗架子,用來做高劑量率射源活度的測量,其方法是依循Goethsch等人的方法,高劑量率射源活度其出廠証明文件和本科的測量值有所差異,在這15顆射源當中,有3顆超過3%,9顆小於1%,3顆在1%至3%之間。廠商所提供的射源活度證明文件,其誤差可達10%,但容許值是限制在3%以內,所以使用者應校正每一個新射源,謹慎使用原廠所提供之證明文件。 |
英文摘要 | From October 1992 through August 1997, periodic acceptance tests of 15 new Ir-192 sources for high dose rate (HDR) intracavitary therapy were performed. NEL 2571 0.6 cc ion chamber, Keithley 35617 electrometer and calibration jig were used to measure the HDR source activity. The calibration was done according to the methods of other researchers. The activity of HDR source was different between the manufacturers' certificates and our measurements. Among the 15 sources, three sources (ID No. 3, 6 and 15) had differences of more than 3%, nine sources (ID No. 2, 5, 7, 8, 9, 10, 11, 12 and 13) had difference of less than 1%, and three sources (1, 4 and 14) had difference of 1% to 3%. The variation of activities of Ir-192 sources from the manufacturers' certificates were up to 10%, but the tolerated level was limited to less than 3%. In conclusion, users should calibrate all new sources and carefully use the manufacturers' certificates as supplied. |
本系統中英文摘要資訊取自各篇刊載內容。