Quantitative comparison of different dosimetry methods in orthovoltage X-ray therapy

Sevcik, Aleksandras; Laurikaitienė, Jurgita; Adlienė, Diana

doi:10.1016/j.radphyschem.2022.110128

Cited by 2 publications

(1 citation statement)

References 38 publications

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“…These RCFs are used for beam position alignment, measuring beam slice-width or the surface skin-dose in interventional procedures, among others 4 , 5 . Likewise, they are widely employed for quality assurance measurements in photon, electron, and proton therapy 6 – 9 thanks to their sub-millimetre spatial resolution, low energy dependence, quasi water‒equivalence, sensitivity to a wide dose range (from few mGy to hundreds of kGy) and overall easy use 4 , 10 .…”

Section: Introductionmentioning

confidence: 99%

New opto-electro-mechanical sensor for two-dimensions dosimetry based on radiochromic films

Mena,

Karkour,

Alaphilippe

et al. 2023

Sci Rep

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This work presents the validation of a new Opto‒Electro-Mechanical (MOEM) system consisting of a matrix of photodetectors for two-dimensional dosimetry evaluation with radiochromic films. The proposed system is based on a 5 × 10 matrix of photodetectors controlled by both in-house electronic circuit and graphical user interface, which enables optical measurements directly. We present the first tests performed in an X-ray machine and 137Cs source with that array by using Gafchromic EBT3 films. We obtained similar results than with a standard method (e.g. flat-bed scanner). Results were compared with Monte Carlo simulations and very good agreement was found. Results show the feasibility of using this system for dose evaluations. To the best of our knowledge, this is the first MOEM sensor for radiotherapy. Further developments are ongoing to create an advanced 16 × 16 LDRs system covering 1.6 cm × 1.6 cm with a 1 mm of spatial resolution. We point to develop a portable dosimetry tool delivering dose maps in real time to improve the clinical application of radiochromic films.

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