Fricke gel xylenol orange dosimeter layers for stereotactic radiosurgery: A preliminary approach

Investigations regarding the feasibility, reliability, and accuracy of Fricke gel dosimeter layers for stereotactic radiosurgery are presented. A representative radiosurgery plan consisting of two targets has been investigated. Absorbed dose distributions measured using radiochromic films and gelati...

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Bibliographic Details
Published in:Applied radiation and isotopes 2021-12, Vol.178, p.109936-109936, Article 109936
Main Authors: Pérez, P., Torres, P. Rico, Bruna, A., Brunetto, M., Aon, E., Franco, D., Mattea, F., Figueroa, R., Santibáñez, M., Valente, M.
Format: Article
Language:English
Subjects:
Dosimetry
Feasibility Studies
Fluorescent Dyes - chemistry
Fricke gel
Gels - chemistry
Humans
Linac
Monte Carlo Method
Phantoms, Imaging
Phenols - chemistry
Radiation Dosimeters - standards
Radiosurgery - methods
Reproducibility of Results
Stereotactic radiosurgery
Sulfoxides - chemistry
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Summary:Investigations regarding the feasibility, reliability, and accuracy of Fricke gel dosimeter layers for stereotactic radiosurgery are presented. A representative radiosurgery plan consisting of two targets has been investigated. Absorbed dose distributions measured using radiochromic films and gelatin Fricke Gel dosimetry in layers have been compared with dose distributions calculated by using a treatment planning system and Monte Carlo simulations. The different dose distributions have been compared by means of the gamma index demonstrating that gelatin Fricke gel dosimeter layers showed agreements of 100%, 100%, and 93%, with dose and distance tolerances of 2% and 2 mm, with respect to film dosimetry, treatment planning system and Monte Carlo simulations, respectively. The capability of the developed system for three-dimensional dose mapping was shown, obtaining promising results when compared with well-established dosimetry methods. The obtained results support the viability of Fricke gel dosimeter layers analyzed by optical methods for stereotactic radiosurgery. •An integral Fricke gel dosimetry system is presented.•Fricke gel dosimeter layers are applied in stereotactic radiosurgery.•Treatment Planning System, film dosimeters and ionization chamber are compared.•Dedicated Monte Carlo simulations provided reliable dose distributions.•γ-index comparison supports using the dosimeter layers for stereotactic radiosurgery.
ISSN:0969-8043
1872-9800
DOI:10.1016/j.apradiso.2021.109936