✦ LIBER ✦

Mathematical Modeling of the Response of Polymer Gel Dosimeters to HDR and LDR Brachytherapy Radiation

✍ Scribed by Abdullah T. Nasr; L. John Schreiner; Kim B. McAuley

Publisher: John Wiley and Sons
Year: 2011
Tongue: English
Weight: 872 KB
Volume: 21
Category: Article
ISSN: 1022-1344
DOI: 10.1002/mats.201100057

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

A model is developed to simulate the response of polyacrylamide gel (PAG) dosimeters to single spherical brachytherapy seeds. The model predicts the amount of polymer formed and crosslink density as a function of radial distance and time, using either a HDR Ir^192^ seed or a LDR I^125^ seed. Results indicate that PAG dosimeters should provide accurate dosimetry when used for HDR brachytherapy at distances larger than 4 mm from the center of the seed and that PAG dosimeters will give poor results for LDR dosimetry because of the long time available for the monomer and crosslinker to diffuse toward the seed during polymerization.magnified image

📜 SIMILAR VOLUMES

Mathematical Modeling of Depth-Dose Resp

Mathematical Modeling of Depth-Dose Response of Polymer-Gel Dosimeters

✍ Jonathan N. M. Chain; Abdullah T. Nasr; L. John Schreiner; Kim B. McAuley 📂 Article 📅 2011 🏛 John Wiley and Sons 🌐 English ⚖ 639 KB

## Abstract A dynamic PDE model is developed to simulate the effects of radiation depth doses on polymer formation in polyacrylamide gel dosimeters. Depth doses are simulated using different types of radiation including Co^60^ γ and 6 and 15 MV X‐ray photon beams, along with 6, 9, 12, 16 and 20 MeV

Constraints in the use of repair half ti

Constraints in the use of repair half times and mathematical modelling for the clinical application of HDR and PDR treatment schedules as an alternative for LDR brachytherapy

✍ L.A.M. Pop; J.F.C.M. van den Broek; A.G. Visser; A.J. van der Kogel 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 134 KB

Inhomogeneous alginate gel spheres: An a

Inhomogeneous alginate gel spheres: An assessment of the polymer gradients by synchrotron radiation-induced x-ray emission, magnetic resonance microimaging, and mathematical modeling

✍ Beate Thu; Olav Gåserød; Didrik Paus; Arne Mikkelsen; Gudmund Skjåk-Bræk; Renato 📂 Article 📅 2000 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 499 KB 👁 1 views

It has been previously demonstrated that calcium alginate gels prepared by dialysis often exhibit a concentration inhomogeneity being the polymer concentration considerably lower in the center of the gel than at the edges. Inhomogeneity may be a preferred structure in microcapsules due to low porosi