Characterization of the HYPERSCINT Dosimetry System for Real-Time Dosimetry Measurements with the Varian TrueBeamLinac

Commissioning, MV Photon, Adaptive RT, Quality Assurance, Real-time Dosimetry Show more

Plastic scintillator/optical fibre dosimetry systems are advantageous due to their near water equivalence, waterproof construction, linear dose response, and good spatial resolution due to their small size. The nanosecond decay times of plastic scintillators enable the possibility of real-time dosimetry. We tested the new HYPERSCINT fibre detector system to determine if, in addition to the expected dose and field size responses, this system can provide real-time dose information. The HYPERSCINT system is suitable after appropriate calibration to be used to measure relative dose delivered in cGy as well as indicate changing dose conditions within 0.3 seconds.

2020 AAPM AM
C.Penner (1,2), C.Hoehr (2), C.Mendez (1), C.Duzenli (1) | BC Cancer, Vancouver, BC, CA, TRIUMF, Vancouver, BC, CA

Brachytherapy Technique Commissioning Using the HYPERSCINT Plastic Scintillation Detector

Brachytherapy, Commissioning, In Vivo Dosimetry, kV Photon, Commissioning, Detector comparaison, Quality Assurance Show more

Accurate dosimetry in brachytherapy is not an easy task, as most detectors exhibit volume averaging or energy dependence reducing their usability. Free from these limitations are plastic scintillation detectors, which makes them well suited for brachytherapy applications, either for in vivo dosimetry or commissioning. This work aims to determine if the HYPERSCINT scintillation dosimetry research platform can be used for brachytherapy dose measurement in the context of commissioning a new brachytherapy technique.

2020 AAPM ANNUAL MEETING
M.Goulet, N.Octave, P.Duguay-drouin | CISSS – Chaudiere-Appalaches, Lévis, QC, CA

Development of a novel multi-point plastic scintillation detector with a single optical transmission line for radiation dose measurement

Fundamental research, In Vivo Dosimetry, Treatment Plan QA, MV Photon, Fundamental Research, Multi-point, Quality Assurance, Real-time Dosimetry Show more

The goal of this study was to develop a novel multi-point plastic scintillation detector capable of measuring the dose accurately at multiple positions simultaneously using a single optical transmission line. This study demonstrates the practical feasibility of multi-point plastic scintillation detector. This type of detector could be very useful for pre-treatment quality assurance applications as well as an accurate tool for real-time in vivo dosimetry.

PHYSICS IN MEDICINE & BIOLOGY
F.Therriault-Proulx, L.Archambault, L.Beaulieu, 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

Beam matching for small-field dosimetry applications using accelerator solenoid current and a miniature plastic scintillation detector.

Commissioning, SMALL-FIELD, MV Photon, Commissioning, Quality Assurance Show more

The goal of this work is to determine the optimal accelerator solenoid current (ASOL) that minimizes the spread of measured small field output factor (OF) values between a series of machines. Small field OF measurements of 6 MV flattening filtered beams from 3 Varian TrueBeam linear accelerators were performed using a 1 mm diameter by 1 mm length plastic scintillation detector HYPERSCINT HS-RP200 research platform. In conclusion Small field dosimetry characteristics are highly sensitive to beam focal spot size. and the possibility to optimize accelerator focusing coil current to reduce OF and penumbra width spread enables new avenues in beam matching of series of machines, especially for SRS and SBRT techniques.

2022 COMP ANNUAL SCIENTIFIC MEETING
L.Gingras (1), F.Beaulieu (1), M.Besnier (1), B.Côté (2), D.Leblanc (2), L.Beaulieu (1), L.Archambault (1) | 1- CHU de Québec – Université Laval, QC, CA, 2- MEDSCINT, QC, CA

Plastic Scintillation Detector for Dosimetric Characterization of Mobetron Ultra-High Dose Rate Electron Beam

Commissioning, FLASH-RT, MeV Electron, Commissioning, Detector comparaison, Quality Assurance Show more

The purpose is to present commissioning data for the MOBETRON electron radiation therapy system (IntraOp) at ultra-high dose rate using the HYPERSCINT plastic scintillation detector. The suitability of using a plastic scintillator as an active dosimeter for commissioning measurements of an ultra-high dose rate electron beam has been demonstrated (reference dosimetry, DPP, beam penetration, linearity with number of pulses, linearity with PW and short-term output stability).

2022 AAPM ANNUAL MEETING
G.Famulari (1), K.Zerouali (1), O.Piron (1), JF.Aubry (1), F.DeBlois (1), JF.Carrier (2) | 1- Centre Hospitalier de l’Universite de Montreal (CHUM), Montreal, QC, CA, 2- Departement de Physique, Universite de Montreal, Montreal, QC, CA

Pre-Clinical and Clinical Evaluation of the HYPERSCINT Scintillation Dosimetry Research Platform

In Vivo Dosimetry, MV Photon, Commissioning, Quality Assurance, Real-time Dosimetry Show more

The purpose of this work is to evaluate the HYPERSCINT scintillation dosimetry research platform (Medscint Inc., Quebec City, Canada) designed for clinical QA for use in in-vivo dosimetry measurements.

2020 AAPM AM
I.Schoepper, E.Trestrail, S.Dieterich, M.Kent | WR Pritchard Veterinary Medical Teaching Hospital, UC Davis School of Veterinary Medicine UC Davis School Of Veterinary Medicine, Pacific Crest Medical Physics ,Chico, CA, UC Davis Medical Center, Sacramento, CA, Surgical and Radiological Sciences, UC Davis School of Veterinary Medicine, Davis, CA

Small field dosimetry of a Varian TrueBeam High Definition MLC linear accelerator using theHyperscint RP200 scintillation detector.

SMALL-FIELD, MV Photon, Angular dependancy, Energy Dependency, Phantom QA, Quality Assurance Show more

To evaluate the performance of the new Hyperscint RP200 plastic scintillator for small field measurements of a Varian TrueBeam linear accelerator in comparison with the current state-of-the-art methodology in the clinic.

2021 COMP ASM
L.Gingras, B.Côté, F.Berthiaume, S.Lambert-Girard, D.Leblanc, L.Archambault, L.Beaulieu, F.Therriault-Proulx | CHU de Quebec – Universite Laval, QC, CA, Département de radio-oncologie et Axe Oncologie du CRCHU de Québec, QC, CA, MedScint, QC, CA