A methodology for choosing parameters for ESR readout of alanine dosimeters for radiotherapy |
| |
| Institution: | 1. CEA, LIST, Laboratoire National Henri Becquerel, F-91191 Gif-sur-Yvette, France;2. Radiometrology Centre, China Institute of Atomic Energy, 102413 Beijing, China;1. School of Nuclear Science and Technology, Lanzhou University, Lanzhou, Gansu 730000, PR China;2. Institute of Nuclear Physics and Chemistry, Chinese Academy of Engineering Physics, Mianyang, Sichuan Province 621900, PR China;1. Pontifícia Universidade Católica do Rio de Janeiro, Rio de Janeiro, Brazil;2. DCNME, Universidade Federal de São Carlos, Araras, São Paulo, Brazil;3. LEQ, DQ, Universidade Federal do Paraná, Curitiba, Paraná, Brazil;1. Chemical Sciences & Engineering Division, Argonne National Laboratory, 9700 S. Cass Ave., Argonne, IL 60439, United States;2. Physics Department, South Dakota School of Mines & Technology, 501 E. Saint Joseph St., Rapid City, SD 57701, United States;3. Idaho Accelerator Center, Idaho State University, 921 S. 8th Ave., Pocatello, ID 83209, United States;1. École Normale Supérieure – PSL Research University, Département de Chimie, 24, rue Lhomond, F-75005 Paris, France;2. Sorbonne Universités, UPMC University Paris 06, LBM, 4 place Jussieu, F-75005 Paris, France;3. CNRS, UMR 7203 LBM, F-75005 Paris, France;1. Institut de Physique Nucléaire de Lyon, CNRS/IN2P3 UMR 5822, Université Claude Bernard Lyon 1, Université de Lyon, F-69622 Villeurbanne cedex, France;2. CEA/DEN – Centre de Saclay, F-91191 Gif-sur-Yvette cedex, France;3. Institut Universitaire Technologique, Université Claude Bernard Lyon 1, Université de Lyon, F-69622 Villeurbanne cedex, France;4. CNRS, CEMHTI UPR3079, Université Orléans, CS90055, F-45071 Orléans cedex 2, France;5. Laboratoire de Géologie de l’Ecole Normale Supérieure, Paris, UMR CNRS ENS 8538, F-75231 Paris cedex 5, France;1. Department of Physics, Oklahoma State University, Stillwater, OK 74078, USA;2. National Institute of Standards and Technology, Gaithersburg, MD 20899, USA |
| |
| Abstract: | Spectrometer settings for ESR readout of alanine dosimeters for radiotherapy have been investigated. Several ESR parameters were studied and determined. The main reason for this work is to choose the suitable parameters to increase signal-to-noise ratio and to reduce the uncertainty on ESR readout, which is one of the main components of uncertainty of alanine/ESR dosimetry system for radiotherapy. The new spectrometer settings have been applied for ESR readout of alanine dosimeters irradiated from 1 to 10 Gy. A higher signal-to-noise ratio has been achieved compared to our old spectrometer settings. The extended uncertainty (k=2) has been evaluated in the dose range 2–10 Gy (maximum uncertainty of 4.9% for 2 Gy, while minimum uncertainty of 1.4% for 10 Gy), which implies that the alanine/ESR dosimetry system can be applied to radiotherapy dose level that needs a global accuracy of 5%. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
