Flexible optically stimulated luminescence band for 1D in vivo radiation dosimetry

Physics in Medicine and Biology
Tae Jin KimGuillem Pratx

Abstract

In vivo dosimetry helps ensure the accuracy of radiation treatments. However, standard techniques are only capable of point sampling, making it difficult to accurately measure dose variation along curved surfaces in a continuous manner. The purpose of this work is to introduce a flexible dosimeter band and validate its performance using pre-clinical and clinical x-ray sources. Dosimeter bands were fabricated by uniformly mixing BaFBr:Eu storage phosphor powders into a silicone based elastomer. An optical readout device with dual-wavelength excitation was designed and built to correct for non-uniform phosphor density and extract accurate dose information. Results demonstrated significant correction of the non-uniform readout signal and excellent dose linearity up to 8 Gy irradiation using a pre-clinical 320 kV x-ray system. Beam profile measurements were demonstrated over a long distance of ~30 cm by placing multiple dosimeters in a single line and stitching the results. The performance of the dosimeters was also tested using a clinical linear accelerator (6 MV) and compared to radiochromic film. Once bias corrected, the bands displayed a linear dose response over the 1.02-9.36 Gy range (R 2  >  0.99). The proposed system can be...Continue Reading

References

Jun 1, 1987·Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology·U Quast
Sep 30, 1995·International Journal of Radiation Oncology, Biology, Physics·R D WeaverK E Dusenbery
Jan 9, 1998·International Journal of Radiation Oncology, Biology, Physics·J A AntolakC S Ha
Oct 8, 2009·Physics in Medicine and Biology·E G YukiharaS Ahmad
Jul 23, 2011·Medical Physics·Andre MickeXiang Yu
Mar 22, 2012·Radiation Oncology·Qinan BaoTimothy D Solberg
Nov 28, 2013·Postȩpy dermatologii i alergologii·Tomasz PiotrowskiDorota Fundowicz
Apr 2, 2014·International Journal of Radiation Oncology, Biology, Physics·Lesley A JarvisBrian W Pogue
Jan 8, 2015·Medical Physics·Cesare H JenkinsLei Xing
Feb 20, 2015·Journal of Radiation Research·Rezvan AzimiSusanta K Hui
Apr 14, 2017·Journal of Medical Physics·Y Retna PonmalarHenry Finlay Godson
Jun 9, 2011·Materials·Paul LeblansPeter Willems

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