A methodology for choosing parameters for ESR readout of alanine dosimeters for radiotherapy

Autor:	V. Lourenço, T. Garcia, I. Pasquié, M. Lin
Rok vydání:	2009
Předmět:	musculoskeletal diseases Alanine Radiation therapy Esr dosimetry Radiation Dosimeter Nuclear magnetic resonance Spectrometer Chemistry medicine.medical_treatment medicine Radiotherapy dose skin and connective tissue diseases
Zdroj:	Radiation Physics and Chemistry. 78:782-790
ISSN:	0969-806X
Popis:	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%.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::44a6d795067ab81d725abc92f49b043a https://doi.org/10.1016/j.radphyschem.2009.05.020 Zobrazit plný text záznamu Full Text from ScienceDirect