Joël Lefebvre
Professeur
Joël Lefebvre
Professeur
Unité : Département d'informatique
Courriel : lefebvre.joel@uqam.ca
Téléphone : (514) 987-3000 poste 3307
Langues :
Français, Anglais
Liens d'intérêt
Informations générales
Cheminement académique
2018-2019 - Stage postdoctoral (Big Data Institute, Université d'Oxford)
2014-2018 - Doctorat en génie biomédical (Polytechnique de Montréal)
2012-2014 - Maîtrise en génive biomédical (Polytechnique de Montréal)
2008-2012 - Baccalauréat en génie physique (Polytechnique Montréal)
Unités de recherche
Projets de recherche et/ou de recherche-création en cours
- Histologie sérielle augmentée
- Imagerie multimodale de la géométrie des croisements de fibres de matière blanche dans le cerveau : vers la prochaine génération d'algorithmes de tractographie
Partenaires (organismes, entreprises)
- Centre d'Excellence en Recherche sur les Maladies Orphelines - Fondation Courtois (CERMO-FC)
- Réseau de Bio-Imagerie du Québec (RBIQ)
- Union Neurosciences et Intelligence Artificielle - Québec (UNIQUE)
- International Society of Tractography (IST)
Affiliations externes principales
Enseignement
- Traitement d'images (2026, 2025, 2024, 2022)
- Vision par ordinateurs (2026, 2025, 2024, 2023, 2022)
- Neuroinformatique (2026)
- Infographie (2025, 2023, 2022, 2021)
- Projet d'analyse et de modélisation (2024, 2021)
- Projet de thèse (2023)
- Traitement d'images par ordinateur (2022)
Directions de thèses et mémoires
Mémoires
- Lemieux, Philippe. (2024). Segmentation et analyse de données microscopiques 3D pour la morphologie cellulaire des cytonèmes. (Mémoire de maîtrise). Université du Québec à Montréal.
- Hawchar, Mohamad. (2023). Self-supervised learning with vision transformers for unsupervised segmentation of optical coherence microscopy white matter images. (Mémoire de maîtrise). Université du Québec à Montréal.
Publications
Articles scientifiques
- Sjoberg, H.T., Philippou, Y., Magnussen, A.L., Tullis, I.D.C., Bridges, E., Chatrian, A., Lefebvre, J., Tam, K.H., Murphy, E.A., Rittscher, J., Preise, D., Agemy, L., Yechezkel, T., Smart, S.C., Kinchesh, P., Gilchrist, S., Allen, D.P., Scheiblin, D.A., Lockett, S.J., [...] et Bryant, R.J. (2021). Tumour Irradiation Combined with Vascular-Targeted Photodynamic Therapy Enhances Antitumour Effects in Pre-Clinical Prostate Cancer. British Journal of Cancer, 1–13. http://dx.doi.org/10.1038/s41416-021-01450-6.
- Lefebvre, J., Delafontaine-Martel, P. et Lesage, F. (2019). A Review of Intrinsic Optical Imaging Serial Blockface Histology (ICI-SBH) for Whole Rodent Brain Imaging. Photonics, 6(2), article 66. http://dx.doi.org/10.3390/photonics6020066.
- Castonguay, A., Lefebvre, J., Pouliot, P. et Lesage, F. (2018). Comparing three-dimensional serial optical coherence tomography histology to MRI imaging in the entire mouse brain. Journal of Biomedical Optics, 23(1), article 016008. http://dx.doi.org/10.1117/1.JBO.23.1.016008.
- Lefebvre, J., Delafontaine-Martel, P., Pouliot, P., Girouard, H., Descoteaux, M. et Lesage, F. (2018). Fully automated dual-resolution serial optical coherence tomography aimed at diffusion MRI validation in whole mouse brains. Neurophotonics, 5(4), article 045004. http://dx.doi.org/10.1117/1.NPh.5.4.045004.
- Delafontaine-Martel, P., Lefebvre, J., Tardif, P. L., Lévy, B. I., Pouliot, P. et Lesage, F. (2018). Whole brain vascular imaging in a mouse model of Alzheimer’s disease with two-photon microscopy. Journal of biomedical optics, 23(7), article 076501. http://dx.doi.org/10.1117/1.JBO.23.7.076501.
- Castonguay, A., Lefebvre,.J., Pouliot, P., Avti, P., Moeini, M. et Lesage, F. (2017). Serial optical coherence scanning reveals an association between cardiac function and the heart architecture in the aging rodent heart. Biomedical Optics Express, 8(11), 5027–5038. http://dx.doi.org/10.1364/BOE.8.005027.
- Lefebvre, J., Castonguay, A., Pouliot, P., Descoteaux, M. et Lesage, F. (2017). Whole mouse brain imaging using optical coherence tomography: reconstruction, normalization, segmentation, and comparison with diffusion MRI. Neurophotonics, 4(4), article 041501. http://dx.doi.org/10.1117/1.NPh.4.4.041501.
- Tardif, P.-L., Marie-Jeanne Bertrand, M.-J., Abran, M., Castonguay, A., Lefebvre, J., Stähli, B. E.,... Lesage, F. (2016). Validating intravascular imaging with serial optical coherence tomography and confocal fluorescence microscopy. International Journal of Molecular Sciences, 17(12), article 2110. http://dx.doi.org/10.3390/ijms17122110.
- Gagnon, L., Sakadžić, S., Lesage, F., Musacchia, J.J., Lefebvre, J., Fang, Q.,... Boas, D. A. (2015). Quantifying the microvascular origin of BOLD-fMRI from first principles with two-photon microscopy and an oxygen-sensitive nanoprobe. The Journal of Neuroscience, 35(8), 3663–3675. http://dx.doi.org/10.1523/JNEUROSCI.3555-14.2015.
- Desjardin, M., Berti, R., Lefebvre, J., Dubeau, S. et Lesage, F. (2014). Aging-related differences in cerebral capillary blood flow in anesthetized rats. Neurobiology of Aging, 35(8), 1947–1955. http://dx.doi.org/10.1016/j.neurobiolaging.2014.01.136.
- Sakadžić, S., Mandeville, E.T., Gagnon, L., Musacchia, J.J., Yaseen, M.A., Yucel, M. A., Lefebvre, J.,... Boas, D.A. (2014). Large arteriolar component of oxygen delivery implies a safe margin of oxygen supply to cerebral tissue. Nature Communications, 5, article 5734. http://dx.doi.org/10.1038/ncomms6734.
Actes de colloque
- Lefebvre, J., Delafontaine-Martel, P., Lemieux, P., Descoteaux, M., Petit, L. et Lesage, F. (2021). Localization and Imaging of White Matter Fiber Crossings in Whole Mouse Brains Using Diffusion MRI and Serial Blockface OCT. Dans Q. Luo, J. Ding et L. Fu (dir.). Optical Techniques in Neurosurgery, Neurophotonics, and Optogenetics, SPIE. http://dx.doi.org/10.1117/12.2577648.
- Delas Peñas, K., Dmitrieva, M., Lefebvre, J., Zenner, H., Allgeyer, E., Booth, M., St. Johnston, D. et Rittscher, J. (2020). Extracting Axial Depth and Trajectory Trend Using Astigmatism, Gaussian Fitting, and CNNs for Protein Tracking. Dans 2020 IEEE 17th International Symposium on Biomedical Imaging (ISBI), 1634‑1637. Iowa City, IA, USA: IEEE. http://dx.doi.org/10.1109/ISBI45749.2020.9098364.
- Dmitrieva, M., Lefebvre, J., Delas Peñas, K., Zenner, H.L., Richens, J., St. Johnston, D. et Rittscher, J. (2020). Short Trajectory Segmentation with 1D UNET Framework: Application to Secretory Vesicle Dynamics. Dans 2020 IEEE 17th International Symposium on Biomedical Imaging (ISBI), 891‑894. Iowa City, IA, USA: IEEE. http://dx.doi.org/10.1109/ISBI45749.2020.9098426.
- Lefebvre, J., Javer, A., Dmitrieva, M., Rittscher, J., Lewkow, B., Allgeyer, E., Sirinakis, G. et St. Johnston, D. (2020). Single-Molecule Localization Microscopy Reconstruction Using Noise2Noise for Super-Resolution Imaging of Actin Filaments. Dans 2020 IEEE 17th International Symposium on Biomedical Imaging (ISBI), 1596‑1599. Iowa City, IA, USA: IEEE. http://dx.doi.org/10.1109/ISBI45749.2020.9098713.
- Lefebvre, J., Castonguay, A. et Lesage, F. (2018). Imaging Whole Mouse Brains with a Dual Resolution Serial Swept-Source Optical Coherence Tomography Scanner. Dans Q. Luo et J. Ding (dir.). Neural Imaging and Sensing 2018, 12. San Francisco, United States: SPIE. http://dx.doi.org/10.1117/12.2288521.
- Delafontaine-Martel, P., Lesage, F., Damseh, R., Lefebvre, J., Castonguay, A. et Tardif, P.-L. (2018). Large Scale Serial Two-Photon Microscopy to Investigate Local Vascular Changes in Whole Rodent Brain Models of Alzheimer’s Disease. Dans A. Periasamy, P.T. So, X.S. Xie et K. König (dir.). Multiphoton Microscopy in the Biomedical Sciences XVIII, 92. San Francisco, United States: SPIE. http://dx.doi.org/10.1117/12.2290060.
- Lefebvre, J., Castonguay, A. et Lesage, F. (2017). White matter segmentation by estimating tissue optical attenuation from volumetric OCT massive histology of whole rodent brains. Dans Three-Dimensional and Multidimensional Microscopy: Image Acquisition and Processing XXIV, 10070:1007012. International Society for Optics and Photonics. http://dx.doi.org/10.1117/12.2251173.
- Lesage, F., Castonguay, A., Tardif, P.-L., Lefebvre, J. et Li, B. (2015). Investigating the Impact of Blood Pressure Increase to the Brain Using High Resolution Serial Histology and Image Processing. Dans M. Papadakis, V.K. Goyal et D. Van De Ville (dir.). Wavelets and Sparsity XVI, 95970M. San Diego, California, United States. http://dx.doi.org/10.1117/12.2189110.
- Gagnon, L., Sakadžić, S., Lesage, F., Musacchia, J.J., Lefebvre, J., Fang, Q., Yücel, M.A., Evans, K.C., Mandeville, E.T., Cohen-Adad, J., Polimeni, J.R., Yaseen, M.A., Lo, E.H., Greve, D.N., Buxton, R.B., Dale, A.M., Devor, A. et Boas, D.A. (2014). Folded cortical orientation influences the amplitude of BOLD-fMRI: evidence from simulations and experimental data. Dans Proc. Intl. Soc. Mag. Reson. Med., 22, article 3084.
- Sakadžić, S., Mandeville, E.T., Gagnon, L., Musacchia, J.J., Yaseen, M.A., Yucel, M.A., Lefebvre, J., Lesage, F., Dale, A.M., Eikermann-Haerter, K., Ayata, C., Srinivasan, V.J., Lo, E.H., Devor, A. et Boas, D.A. (2014). High-Resolution Optical Microscopy Imaging of Cortical Oxygen Delivery and Consumption. Dans CLEO: 2014, AF2B.3. San Jose, California: OSA. http://dx.doi.org/10.1364/CLEO_AT.2014.AF2B.3.
- Desjardins, M., Berti, R., Lefebvre, J., Dubeau, S. et Lesage, F. (2014). Microscopic Dynamics of Cerebral Capillary Blood Flow in Aged Anesthetized Rats. Dans Biomedical Optics 2014, BT3A.3. Miami, Florida: OSA. http://dx.doi.org/10.1364/BIOMED.2014.BT3A.3.
- Sakadžić, S., Mandeville, E.T., Gagnon, L., Musacchia, J.J., Yaseen, M.A., Yucel, M.A., Lefebvre, J., Lesage, F., Dale, A.M., Eikermann-Haerter, K., Ayata, C., Srinivasan, V.J., Lo, E.H., Devor, A. et Boas, D.A. (2014). Oxygen Distribution in Cortical Microvasculature Reveals a Novel Mechanism for Maintaining a Safe Tissue Oxygenation. Dans Biomedical Optics 2014, BW1A.2. Miami, Florida: OSA. http://dx.doi.org/10.1364/BIOMED.2014.BW1A.2.
- Gagnon, L., Sakadžić, S., Lesage, F., Musacchia, J.J., Lefebvre, J., Fang, Q., Yücel, M.A., Evans, K.C., Mandeville, E.T., Cohen-Adad, J., Polimeni, J.R., Yaseen, M.A., Lo, E.H., Greve, D.N., Buxton, R.B., Dale, A.M., Devor, A. et Boas, D.A. (2014). Underpinning the Microvascular Origin of BOLD-FMRI with Two-Photon Microscopy. Dans Biomedical Optics 2014, BT4A.1. Miami, Florida: OSA. http://dx.doi.org/10.1364/BIOMED.2014.BT4A.1.