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Polymer gel dosimetry

journal contribution
posted on 2023-05-19, 04:13 authored by Baldock, C, De Deene, Y, Doran, S, Ibbott, G, Jirasek, A, Lepage, M, McAuley, KB, Oldham, M, Schreiner, LJ
Polymer gel dosimeters are fabricated from radiation sensitive chemicals which, upon irradiation, polymerize as a function of the absorbed radiation dose. These gel dosimeters, with the capacity to uniquely record the radiation dose distribution in three-dimensions (3D), have specific advantages when compared to one-dimensional dosimeters, such as ion chambers, and two-dimensional dosimeters, such as film. These advantages are particularly significant in dosimetry situations where steep dose gradients exist such as in intensity-modulated radiation therapy (IMRT) and stereotactic radiosurgery. Polymer gel dosimeters also have specific advantages for brachytherapy dosimetry. Potential dosimetry applications include those for low-energy x-rays, high-linear energy transfer (LET) and proton therapy, radionuclide and boron capture neutron therapy dosimetries. These 3D dosimeters are radiologically soft-tissue equivalent with properties that may be modified depending on the application. The 3D radiation dose distribution in polymer gel dosimeters may be imaged using magnetic resonance imaging (MRI), optical-computerized tomography (optical-CT), x-ray CT or ultrasound. The fundamental science underpinning polymer gel dosimetry is reviewed along with the various evaluation techniques. Clinical dosimetry applications of polymer gel dosimetry are also presented.

History

Publication title

Physics in Medicine and Biology

Volume

55

Issue

5

Pagination

R1-R63

ISSN

0031-9155

Department/School

Research Services

Publisher

Iop Publishing Ltd

Place of publication

Dirac House, Temple Back, Bristol, England, Bs1 6Be

Rights statement

© 2010 Institute of Physics and Engineering in Medicine

Repository Status

  • Restricted

Socio-economic Objectives

Other health not elsewhere classified

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