Dr. Archambault is a FRQ-S Junior 2 Research Scholar and a radiation physicist with expertise in medical physics, radiation oncology, and medical imaging. He joined the CHU de Québec in 2010 after a postdoctoral fellowship in the division of radiation oncology at the MD Anderson Cancer Center and became a professor in the department of physics, engineering physics, and optics at Laval University in 2013. Hi work focuses on developing new instruments and novel algorithms to make radiation treatments more efficient. His work has been recognized on multiple occasions by the scientific community. Since 2012, he has received the Sylvia Fedoruk prize twice from the Canadian Organization of Medical Physicists (COMP) annually acknowledging the best scientific publication on medical physics by Canadian authors.

Improving the efficiency of radiation treatments

The success of a radiation treatment depends on our ability to focus a high dose of radiation on a tumor target while sparing surrounding tissues. To this end, the complexity of radiation treatment delivery has tremendously increased in recent years, and new tools are required to rapidly and accurately monitor radiation dose delivery. Using materials that emit visible light when irradiated, Dr. Archambault’s team has developed new types radiation dosimeters such as one of the first time-resolved 3D radiation dose detectors. These innovative tools are uniquely positioned to address the challenges of modern radiation treatments (e.g. delivery in the presence of strong magnetic fields) and offer a new way of studying the factors that limit the efficiency of radiation treatments such as anatomical changes.

A second aspect of the research is the development of smart algorithms that automatically analyze data and images produced during radiation treatments to guarantee accurate delivery. Thus, building such a virtual safety net can complement and support the expertise of healthcare professionals to guarantee that every cancer patient treated with radiotherapy receives the best possible treatment. Using machine learning, these algorithms can even predict which patients are likely to require an adaptation of their treatment plan, thus opening new possibilities in personalized radiotherapy.

Hôpital de l'Enfant-Jésus
1401, 18e rue
Québec, Québec
Canada G1J 1Z4

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Bourgouin A, Varfalvy N, Archambault L

Thermoplastic wrapped lead sheet to reduce cardiac device cumulative dose.

Journal Article

Med Dosim, 44 (2), 2019.

Abstract | Links:

Rilling M, Bourassa F, Archambault L, Thibault S

System matrix generation for 3D tomographic reconstructions using an optical design software

Journal Article

Proc SPIE Int Soc Opt Eng, 10745 , 2018.

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Mascolo-Fortin J, Matenine D, Archambault L, Despres P

A fast 4D cone beam CT reconstruction method based on the OSC-TV algorithm.

Journal Article

J Xray Sci Technol, 26 (2), 2018.

Abstract | Links:

Gourdeau D, Gingras L, Beaulieu F, Leclerc G, Archambault L

An EPID-based method to determine mechanical deformations in a linear accelerator.

Journal Article

Med Phys, 45 (11), 2018.

Abstract | Links:

Piron O, Varfalvy N, Archambault L

Establishing action threshold for change in patient anatomy using EPID gamma analysis and PTV coverage for head and neck radiotherapy treatment.

Journal Article

Med Phys, 2018.

Abstract | Links:

Archambault L, Rilling M, Roy-Pomerleau X, Thibault S

Dynamic 3D measurement of modulated radiotherapy: a scintillator-based approach

Journal Article

J Phys Conf Ser, 847 , 2017.

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Varfalvy N, Piron O, Cyr MF, Dagnault A, Archambault L

Classification of changes occurring in lung patient during radiotherapy using relative γ analysis and hidden Markov models.

Journal Article

Med Phys, 44 (10), 2017.

Abstract | Links:

Papaconstadopoulos P, Archambault L, Seuntjens J

Experimental investigation on the accuracy of plastic scintillators and of the spectrum discrimination method in small photon fields.

Journal Article

Med Phys, 44 (2), 2017.

Abstract | Links:

Bagur R, Chamula M, Brouillard E, Lavoie C, Nombela-Franco L, Julien AS, Archambault L, Varfalvy N, Gaudreault V, Joncas SX, Israeli Z, Parviz Y, Mamas MA, Lavi S

Radiotherapy-Induced Cardiac Implantable Electronic Device Dysfunction in Patients With Cancer.

Journal Article

Am J Cardiol, 119 (2), 2017.

Abstract | Links:

Therriault-Proulx F, Archambault L

Multipoint plastic scintillation detectors

Book Chapter

S, Beddar; L, Beaulieu (Ed.): Scintillation dosimetry, Boca Raton, FL, CRC Press, Taylor & Francis Group, 2016, ISBN: 9781482208993.

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Active projects

  • Étude de marché - Un dosimètre plan pour le contrôle de qualité en radiothérapie, from 2021-02-01 to 2022-01-31
  • New tools and method for monitoring ionizing radiation delivery in medical physics, from 2018-04-01 to 2023-03-31
  • NSERC CREATE in Responsible Health and Healthcare Data Science, from 2019-09-01 to 2026-08-31

Recently finished projects

  • Développement d'avantages compétitifs pour la plateforme de dosimétrie à scintillation, from 2021-01-06 to 2021-12-31
  • Développement d'un système de dosimétrie à scintillation multipoints, from 2019-03-18 to 2021-08-14
  • Étalonnage autodidacte de dosimètres à scintillation multi-points, from 2019-03-29 to 2020-02-15
  • Évaluation du flot sanguin, de l'oxygénation tissulaire et de la radiosensibilisation avec l'oxygénothérapie hyperbare, from 2019-03-24 to 2020-03-31
  • Une radiothérapie plus efficace par un processus évolutif et adaptatif, from 2016-07-01 to 2020-06-30
Data provided by the Université Laval research projects registery