中国医疗设备
中國醫療設備
중국의료설비
CHINA MEDICAL EQUIPMENT
2014年
1期
117-118,140
,共3页
陈旭明%姚升宇%许奕%陈智维%胡喆凯%徐冰%赵国旗
陳旭明%姚升宇%許奕%陳智維%鬍喆凱%徐冰%趙國旂
진욱명%요승우%허혁%진지유%호철개%서빙%조국기
MOSFET探测器%全身放疗%质量控制%X射线
MOSFET探測器%全身放療%質量控製%X射線
MOSFET탐측기%전신방료%질량공제%X사선
MOSFET detector%total body irradiation%quality control%X-ray
目的:探讨MOSFET探测器在全身放疗质量控制中的价值。方法在源轴距360 cm处使用电离室对MOSFET探测器进行标定,同时根据体模入射面、出射面与中间层面的剂量换算关系,利用标定后的MOSFET探测器检测行全身放疗患者的辐射剂量,控制并减少相应误差。结果10个MOSFET探测器中,有7个最大偏差均<3%,另3个经再次重新标定后,最大偏差亦<3%,均可用于临床测量。结论在全身放疗中应用MOSFET探测器能够起到监测治疗剂量、控制误差的作用。
目的:探討MOSFET探測器在全身放療質量控製中的價值。方法在源軸距360 cm處使用電離室對MOSFET探測器進行標定,同時根據體模入射麵、齣射麵與中間層麵的劑量換算關繫,利用標定後的MOSFET探測器檢測行全身放療患者的輻射劑量,控製併減少相應誤差。結果10箇MOSFET探測器中,有7箇最大偏差均<3%,另3箇經再次重新標定後,最大偏差亦<3%,均可用于臨床測量。結論在全身放療中應用MOSFET探測器能夠起到鑑測治療劑量、控製誤差的作用。
목적:탐토MOSFET탐측기재전신방료질량공제중적개치。방법재원축거360 cm처사용전리실대MOSFET탐측기진행표정,동시근거체모입사면、출사면여중간층면적제량환산관계,이용표정후적MOSFET탐측기검측행전신방료환자적복사제량,공제병감소상응오차。결과10개MOSFET탐측기중,유7개최대편차균<3%,령3개경재차중신표정후,최대편차역<3%,균가용우림상측량。결론재전신방료중응용MOSFET탐측기능구기도감측치료제량、공제오차적작용。
Objective To investigate the application value of MOSFET detector in the quality control of total body irradiation. Methods To demarcate the radiation dose of MOSFET detector with ionization chamber at 360 cm SAD. To detect the radiation dose of patients during total body irradiation by using demarcated MOSFET detector in order to control and reduce measuring errors according to the conversion relationship among incident surface, exit surface and intermediate layer of the model. Results Among all MOSFET detectors (10 cases), the maximum dose deviation (<3%) can meet clinical requirements in 7 cases and the maximum dose deviation (<3%) also can meet clinical requirements in 3 cases which are demarcated again. Conclusion The radiation dose can be monitored and measuring errors can be controlled with the application of MOSFET detector in total body irradiation.