Implementation and validation of beam current transformer for Mobetron ultra-high dose rate electron beam monitoring using multi-detector approach

To evaluate the performance of a custom beam current transformer (BCT) as a beam monitoring tool for the Mobetron electron radiation therapy system at ultra-high dose rates (UHDR) using a multi-detector comparison.

2022 COMP ASM
G.Famulari, K.Zerouali, J.Renaud, B.Muir, JF.Aubry, F.DeBlois, JF.Carrier | Centre Hospitalier de l’Universite de Montreal (CHUM), Montreal, QC, CA, National Research Council Canada, Montreal, QC, CA

Technical note: Characterization and practical applications of a novel plastic scintillator for online dosimetry for an ultrahigh dose rate (FLASH)

Although flash radiation therapy (FLASH-RT) is a promising novel technique that has the potential to achieve a better therapeutic ratio between tumor control and normal tissue complications, the ultrahigh pulsed dose rates (UHPDR) mean that experimental dosimetry is very challenging.

Med Phys. 2022
Y.Poirier (1,2), J.Xu (1), S.Mossahebi (1), F.Therriault-Proulx (3), A.Sawant (1) | Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, Maryland, USA, Department of Medical Physics, McGill University, Montreal, Quebec, Canada, MedScint, QC, CA

Characterization of a Novel Plastic Scintillator for Instant Real- Time Dosimetry in Electron FLASH-RT

To characterize and validate the novel Hyperscint RP100 plastic dosimeter as a direct pulse counter and investigate its use as a real-time in-vivo dosimeter in FLASH-RT radiobiological experiments.

2021 COMP ASM
Y.Poirier (1), J.Xu (1), A.Ahmady (1), S.Mossahebi (1), H.Zhang (1), F.Therriault-Proulx (2), A.Sawant (1) | University of Maryland School of Medicine, Baltimore, MD, USA , McGill University, QC, CA , MedScint, QC, CA

Precise Pulse Delivery Control Using Monitor Units in Electron FLASH-RT

In electron FLASH-RT, precise delivery of the correct number of pulses is critical to accurate dose administration in preclinical radiobiological studies. This work investigates the use of LINAC monitor ion chambers to most precisely control FLASH pulse delivery.

2021 AAPM AM
J.Xu, Y.Poirier, A.Sawant | University of Maryland School of Medicine, Baltimore, MD, USA

Novel Plastic Scintillator for Online Dosimetry in Electron FLASH-RT

The accurate delivery of electrons at FLASH-RT dose rates in radiobiological experiments require new dosimeters that are capable of accurately measuring the radiation dose delivered at >0.55 Gy per pulse (>100 Gy/s) in real-time.

2021 AAPM AM
Y.Poirier (1), J.Xu (1), A.Ahmady (1), S.Mossahebi (1), H.Zhang (1), F.Therriault-Proulx (2), A.Sawant (1) | University of Maryland School of Medicine, Baltimore, MD, USA , Medscint, QC, CA

EFLASH Dosimetry On a Conventional Linac Using Pulse-Gated Delivery

To build on previous experiments and improve reproducibility of electron FLASH delivery on a conventional linear accelerator, a pulse-gating circuit was constructed and tested with several dosimeters.

2021 AAPM AM
C.Duzenli, C.Mendez, M.Petric, J.Sweeney, D.Ta, T.Karan | BC Cancer, Vancouver, BC, CA

On the nature of the light produced within PMMA optical light guides in scintillation fiber-optic dosimetry

The goal of this study was to evaluate the nature of the stem effect light produced within an optical fiber, to quantify its composition, and to evaluate the efficiency of the chromatic technique to remove the stem effect.

Phys Med Biol. 2013
F.Therriault-Proulx, L.Beaulieu, L.Archambault, S.Beddar | Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA, Département de Physique, de Génie Physique et d’Optique, Université Laval, Québec, Québec, Canada, Département de Radio-Oncologie, Hôtel-Dieu de Québec, Centre Hospitalier Universitaire de Québec, Québec, Canada

Review of plastic and liquid scintillation dosimetry for photon, electron, and proton therapy

While scintillation dosimetry has been around for decades, the need for a dosimeter tailored to the reality of modern radiation therapy-in particular a real-time, water-equivalent, energy-independent dosimeter with high spatial resolution-has generated renewed interest in scintillators over the last 10 years.

Phys Med Biol. 2016
L Beaulieu (1,2), S Beddar (3,4) | Département de physique, génie physique et optique, et Centre de recherche sur le cancer, Université Laval, Québec, CA , Département de radio-oncologie et Axe Oncologie du CRCHU de Québec, QC, CA, Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA, The University of Texas Graduate School of Biomedical Sciences at Houston, Houston, TX, USA

Water-equivalent plastic scintillation detectors for high-energy beam dosimetry: II. Properties and measurements

The properties of a new scintillation detector system for use in dosimetry of high-energy beams in radiotherapy have been measured. The most important properties of these detectors are their hgh spatial resolution and their nearly water-equivalence.

Phys Med Biol. 1992
A.S. Beddar, T.R. Mackie, F.H. Attix | Depanment of Medical Physics, University of Wisconsin Medical School, Madison, Wl, USA