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Ding X, Bourland J, Dolesh W, et al. SU-E-T-99: Small Field Output Factor Measurement Using MAGIC Gel Dosimeter in 3T MRI. Med Phys. 2012;39(6):3725doi: 10.1118/1.4735157.
Ding, X., Bourland, J., Dolesh, W., Best, R., Mcgowin, I., & Liu, J. (2012). SU-E-T-99: Small Field Output Factor Measurement Using MAGIC Gel Dosimeter in 3T MRI. Medical physics, 39(6), 3725. https://doi.org/10.1118/1.4735157
Ding, X, et al. "SU-E-T-99: Small Field Output Factor Measurement Using MAGIC Gel Dosimeter in 3T MRI." Medical physics vol. 39,6 (2012): 3725. doi: https://doi.org/10.1118/1.4735157
Ding X, Bourland J, Dolesh W, Best R, Mcgowin I, Liu J. SU-E-T-99: Small Field Output Factor Measurement Using MAGIC Gel Dosimeter in 3T MRI. Med Phys. 2012 Jun;39(6):3725. doi: 10.1118/1.4735157. PMID: 28517146.
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Med Phys. 2012 Jun;39(6):3725. doi: 10.1118/1.4735157.

SU-E-T-99: Small Field Output Factor Measurement Using MAGIC Gel Dosimeter in 3T MRI.

Medical physics

X Ding, J Bourland, W Dolesh, R Best, I Mcgowin, J Liu

Affiliations

  1. Wake Forest Univ, Winston-Salem, NC.

PMID: 28517146 DOI: 10.1118/1.4735157

Abstract

PURPOSE: Small field dosimetry is very important because of radiation therapy techniques that use small fields such as IMRT, gamma and body radiosurgery, cyberknife and tomotherapy. We investigated use of a MAGIC (Methacrylic and Ascorbic acid in Gelatin Initiated by Copper) gel dosimeter to quantitatively measure small field output factors (OFs) for 6MV x rays.

METHODS: In this work, MAGIC (Gelatin 9%; Methacrylic acid 4%; CuSO4 0.1mM; Ascorbic ascid 2mM; Glucose 10%) gel phantoms were developed to measure the 6MV x-ray output factors for 1×1 up to 10×10 cm

RESULTS: 6MV x-ray OFs versus field size for all detectors were graphically compared. The MAGIC polymer gel dosimeter OF for a 1×1 cm

CONCLUSIONS: MAGIC gel dosimeter with 3T MRI scanner as a read-out makes it an ideal tool for small field dosimetry.

© 2012 American Association of Physicists in Medicine.

Keywords: Acids; Dosimetry; Gels; Intensity modulated radiation therapy; Ionization chambers; Magnetic resonance imaging; Metallic thin films; Radiation therapy; Radiosurgery; Thermoluminescent dosimeters

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