Utility of the equivalent depth concept for in-vivo dosimetry with no build-up on the skin using glass rod dosimeter (GRD):preliminary results

摘要：

　　Therapeutic dose verification with in-vivo dosimetry is important in modern radiotherapy because of its high complexity and high precision.The conventional dosimeters,thermoluminescent dosimeter (TLD) or dosimetric films for examples,has been widely used.However,they require a great care because of their complicated calibration and readout procedures.Furthermore,use of build-up involves change of delivered dose distribution.We tried to use a radiophotoluminescent glass rod dosimeter (GRD) system with no build-up on the skin.The equivalent depth concept for each effective field size and each incident beam angle was introduced to perform effective in-vivo dosimetry on the skin.As a preliminary result,we successfully obtained a equivalent depth table using 20 GRDs.We performed invivo dosimetry to verify the usefulness of this table in three patients,and found that there are deviations less than 5.0%.Finally,we found the possibility to perform effective in-vivo dosimetry with no build-up on the skin.The obtaining of a more precise equivalent depth table and more clinical verification will be our further works.

关键词： in-vivo dosimetry equivalent depth table no buildup glass rod dosimeter radiation treatment planning

作者: H. Jeon J.H. Nam D. Park Y.H. Kim W.T. Kim Y.K. Ki D.H. Kim J.H. Lee D.W. Kim

作者单位: Department of Radiation Oncology, Pusan National University Yangsan Hospital, Yangsan, Republic of K Department of Radiation Oncology, Pusan National University Hospital, Busan, Republic of Korea

会议类型: 国际会议

会议名称: World Congress on Medical Physics and Biomedical Engineering (2012年医学物理及生物医学工程国际会议(IFMBE))

会议地点: 北京

会议语种:英文

页码: 1884-1886

在线出版日期: 2012-05-26（万方平台首次上网日期，不代表论文的发表时间）