中国癌症杂志
中國癌癥雜誌
중국암증잡지
CHINA ONCOLOGY
2014年
1期
52-56
,共5页
汪隽琦%马金利%胡伟刚%孙力宁
汪雋琦%馬金利%鬍偉剛%孫力寧
왕준기%마금리%호위강%손력저
术中放疗%质量保证%稳定性
術中放療%質量保證%穩定性
술중방료%질량보증%은정성
Intraoperative radiation therapy%Quality assurance%Long-term stability
背景与目的：目前移动式电子束术中放疗已成为多种恶性肿瘤重要的辅助治疗手段，本研究旨在建立该系统的日常质量保证(quality assurance，QA)程序并评价其剂量参数的稳定性。方法：QA程序包括安全性及功能性和能量指标及输出剂量的测试，并对2年来质控数据进行分析，评价剂量参数的稳定性。结果：安全性和功能性的测试结果均正常；4、6、9和12 MeV电子束的能量指标分别为(0.666±0.015)mm、(0.839±0.009)mm、(0.781±0.010)mm和(0.724±0.009)mm，输出剂量误差分别为(0.511±0.671)%、(0.278±0.516)%、(0.368±0.532)%和(0.382±0.912)%，均符合相应标准且无随时间变化的趋势。结论：建立的日常QA程序适合于术中放疗系统，且该系统自身的稳定性能满足临床使用要求。
揹景與目的：目前移動式電子束術中放療已成為多種噁性腫瘤重要的輔助治療手段，本研究旨在建立該繫統的日常質量保證(quality assurance，QA)程序併評價其劑量參數的穩定性。方法：QA程序包括安全性及功能性和能量指標及輸齣劑量的測試，併對2年來質控數據進行分析，評價劑量參數的穩定性。結果：安全性和功能性的測試結果均正常；4、6、9和12 MeV電子束的能量指標分彆為(0.666±0.015)mm、(0.839±0.009)mm、(0.781±0.010)mm和(0.724±0.009)mm，輸齣劑量誤差分彆為(0.511±0.671)%、(0.278±0.516)%、(0.368±0.532)%和(0.382±0.912)%，均符閤相應標準且無隨時間變化的趨勢。結論：建立的日常QA程序適閤于術中放療繫統，且該繫統自身的穩定性能滿足臨床使用要求。
배경여목적：목전이동식전자속술중방료이성위다충악성종류중요적보조치료수단，본연구지재건립해계통적일상질량보증(quality assurance，QA)정서병평개기제량삼수적은정성。방법：QA정서포괄안전성급공능성화능량지표급수출제량적측시，병대2년래질공수거진행분석，평개제량삼수적은정성。결과：안전성화공능성적측시결과균정상；4、6、9화12 MeV전자속적능량지표분별위(0.666±0.015)mm、(0.839±0.009)mm、(0.781±0.010)mm화(0.724±0.009)mm，수출제량오차분별위(0.511±0.671)%、(0.278±0.516)%、(0.368±0.532)%화(0.382±0.912)%，균부합상응표준차무수시간변화적추세。결론：건립적일상QA정서괄합우술중방료계통，차해계통자신적은정성능만족림상사용요구。
Background and purpose: Currently, intraoperative radiation therapy (IORT) has become the adjuvant therapy of cancer. The study was to establish the daily quality assurance (QA) program and analyze dosimetric characteristics’ long-term stability for mobile IORT accelerator. Methods:The QA program of this study included two parts:safety and functionality and energy and output. The two years’ QA datasets were acquired and analyzed to investigate the stability of energy and output. Results:All safety and functionality tests passed on a daily basis. The energy index was (0.666±0.015)mm, (0.839±0.009)mm, (0.781±0.010)mm, (0.724±0.009)mm and the output dose error was (0.511 ± 0.671)%, (0.278 ± 0.516)%, (0.368 ± 0.532)%, (0.382 ± 0.912)%for all energy, respectively. There was no signiifcant time trend in the dosimetric characteristics. Conclusion:The daily QA program is suitable for mobile IORT accelerator. The long-term stability is acceptable for IORT in clinical use.
