Research Interests

  • Using Monte Carlo codes to develop a prompt gamma imaging (PGI) device for real-time 3D dosimetry.
  • Development of a Monte Carlo model of external beam radiotherapy instruments.
  • Investigating the use of prompt gamma radiation produced during proton therapy for real-time¬†treatment verification.
  • Image reconstruction for Compton camera.

Research Experience

Department of Nuclear Science, University of Colombo (Senior Lecturer ,since 2016)

  • Currently I am deeply involved in determining feasibility of prompt gamma imaging for passive-scatter proton radiotherapy treatments using a Geant4 Monte Carlo simulation collaborating with the department of Physics, University of Cape Town.
  • I am also supervising undergraduate and postgraduate research projects in medical physics
  • Visiting medical physicist at the Maharagama National Cancer Institute and Cancer Treatment Center Tellippalai.

Medical radiation division, iThemba LABS, South Africa (Doctoral Training (2012-2014)

  • Measured the discrete prompt gamma-ray emissions from water, Perspex, graphite and liquid nitrogen targets irradiated by a clinical passive-scatter proton beam of 200 MeV for in-vivo range verification purposes

Department of Physics, University of Cape Town, South Africa (Doctoral Training (2012-2014)

  • Developed a Monte Carlo model of the entire experimental setup including iThemba passive-scatter proton beam line and detector with GEANT4 Mone Carlo code.
  • Developed a Monte Carlo model for a new beam range monitor
  • Validated the existing GEANT4 low energy physics for the proton inelastic nuclear reaction against available experimental cross-section data
  • Assisted MSc student from the Department of Physics, University of Western Cape to learn GEANT4 programming as well as to develop a Monte Carlo model for the simulation of Rutherford scattering
  • Assisted PhD student at the Department of Physics, University of Cape Town to learn GEANT4 programming for simulations of prompt gamma production cross-section measurement

Department of Nuclear Medicine, University of Peradeniya, Sir Lanka Master Training (3 Months)

  • Research work on the performance characteristic of a gamma camera used for imaging at the teaching hospital, Peradeniya, Sri Lanka