Tanya Sohrabi
Undergraduate Student
Department of Physics
McGill University
ADetector Development Group
Biography
Tanya is currently a fourth-year undergraduate student in the Joint Honours Physics and Computer Science program at McGill University. Her previous research experience includes three projects in photonics: ghost imaging at the University of Ottawa, the development of a photonic physical neural network at McGill, and the optical testing of nanowire quantum-dot photon sources at the Institute for Quantum Computing at the University of Waterloo. Her research interests have since evolved toward detector development in medical physics.
Projects
- Development of a Scintillation-Based Detector for Monitoring Positron Emission Tomography (PET) Radiopharmaceutical Production
PET radiopharmaceuticals are produced through a series of automated chemical reactions in radiosynthesis modules housed inside shielded hot cells. However, automated radiosynthesis can present challenges, including reaction failures and radioactivity becoming trapped within the module. These challenges motivated the development of a portable external radiation detector for monitoring radioactivity at accessible locations throughout the module. Our detection system uses cerium-doped lutetium–yttrium oxyorthosilicate (LYSO(Ce)) scintillation crystals coupled by optical fibers to silicon photomultiplier (SiPM) daughterboards. In addition to simulation work, Tanya has been working on the development and optimization of this detection system under the supervision of Dr. Enger and Victor Daniel Diaz Martinez. - Radionuclide Patch Therapy
Radionuclide patch therapy is a localized treatment in which a patch containing a beta-emitting radionuclide is placed over a skin lesion. Tanya is using Monte Carlo simulations in Geant4 to investigate how patch design and radionuclide selection can be tailored to lesions of different sizes and depths while limiting the dose delivered to surrounding healthy tissue.
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