Advanced Physics for Brachytherapy 2018

3D dosimeters…?

Figure from: Rogers & Cygler (Eds), Clinical dosimetry measurements in radiotherapy (2009 AAPM Summer School), Monograph No. 34, Medical Physics Publishing 2011

radiation-induced chemical change in a gel matrix can be mapped in 3D using MRI or optical CT

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• polymer gels: Custom made with organic co-monomers • PRESAGE (Heuris Inc.): color forming leucodye (LMG) + initiator within a polyurethane matrix (not a gel) • Radiochromic gels: FXG, tetrazolium salt, or leucodye based (e.g. Truview/Clearview gels by Modus Medical devices Inc.)

Figure from: Baltas, Sakelliou, Zamboglou (Eds), The Physics of modern brachytherapy for oncology, Taylor & Francis Books Inc, 2006