苹果淫院

Updated: Mon, 10/07/2024 - 21:42

From Saturday, Oct. 5 through Tuesday, Oct. 8, the Downtown and Macdonald Campuses will be open only to 苹果淫院 students, employees and essential visitors. Many classes will be held online. Remote work required where possible. See Campus Public Safety website for details.

Du samedi 5 octobre au mardi 8 octobre, le campus du centre-ville et le campus Macdonald ne seront accessibles qu鈥檃ux 茅tudiants et aux membres du personnel de l鈥橴niversit茅 苹果淫院, ainsi qu鈥檃ux visiteurs essentiels. De nombreux cours auront lieu en ligne. Le personnel devra travailler 脿 distance, si possible. Voir le site Web de la Direction de la protection et de la pr茅vention pour plus de d茅tails.

苹果淫院.CA / Medical Physics Unit / Disabled Stuff + No Menu

Magnetic resonance imaging

听The MRI Methods Research Group develops techniques for in vivo MRI, with a primary focus on characterization of anatomy and physiology, and quantitative mapping. The ability to use reproducible scanner-independent imaging markers enables new approaches in diagnostic imaging and patient follow-up after treatment. These quantitative imaging markers can be validated against more invasive reference measures, and provide volumetric non-invasive information.

This motivates our work in developing and validating such markers, and translating them for practical use in the clinical setting. Methods of interest include relaxation and magnetization transfer (MT), diffusion (DW-MRI), perfusion with dynamic contrast-enhanced (DCE-MRI) and magnetic susceptibility imaging and mapping. Currents applications include perfusion and diffusion in cancer, MT mapping in osteoarthritis, and myelin water mapping. Our group also works with clinical medical physics to integrate practical MRI techniques in the radiation therapy (RT) process, including protocol optimization, image evaluation, and integration into planning. MRI provides non-invasive imaging of the human body with excellent soft tissue contrast, which is valuable for RT treatment planning and post-RT assessment.

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The MRI research group. From left to right : Stella Xing, V茅ronique Fortier, Ives Levesque, Mika毛l Simard and Zaki Ahmed.

Key Publications

  1. Alonso-Ortiz, E., Levesque, I. R. and Pike, G. B. MRI-based myelin water imaging: A technical review. Magnetic Resonance in Medicine 73(1): 70鈥�81 (2015).
  2. Rioux, J. A., Levesque, I. R. and Rutt, B. K. Biexponential Longitudinal Relaxation in White Matter: Characterization and Impact on T1 Mapping with IR-FSE and MP2RAGE. Magn Reson Med (Early View) (2015).
  3. Zhang, T., Pauly, J. M. and Levesque, I. R. Accelerating parameter mapping with a locally low rank constraint. Magnetic Resonance in Medicine 73(2): 655鈥�661 (2015).
  4. Tourdias, T., Saranathan, M., Levesque, I. R., Su, J. and Rutt, B. K. Visualization of intra-thalamic nuclei with optimized white-matter-nulled MPRAGE at 7T. Neuroimage 84: 534-545 (2014).
  5. Levesque, I. R., Sled, J. G. and Pike, G. B. Iterative optimization method for design of quantitative magnetization transfer imaging experiments. Magnetic Resonance in Medicine 66(3): 635-643 (2011)

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