Download Curriculum Vitae

I am a medical physicist and an imaging scientist. My research interests focus on the investigation of novel forms of image-guidance for radiation therapy. Throughout my career, I have focused on impactful, multidisciplinary, clinically translatable research. For the past few years, I have worked on developing rapid MRI techniques in order to further improve image-guidance in lung stereotactic body radiation therapy (SBRT). The eventual goal of my research is to achieve truly 4D IGRT - "see" all four dimensions at all stages during radiotherapy.


Graduate School
University of Michigan-Ann Arbor (2006)

Research Interest

  • dynamic MLC tracking
  • image-guided radiotherapy
  • motion modeling
  • multimodality image registration
  • rapid MRI


Featured Publications LegendFeatured Publications

Electromagnetic-Guided DMLC Tracking Enables Motion Management for Intensity Modulated Arc Therapy
P. Keall, A. Sawant, B. Cho, et. al. Int J Radiat Oncol Biol Phys. January 2011 79(1) 312-320
Failure mode and effect analysis-based quality assurance for dynamic MLC tracking systems
A. Sawant, S. Dieterich, M. Svatos and P. Keall Medical Physics December 2010 37 6466-6479
Towards sub-mm accuracy in the management of intrafraction motion: The integration of real-time internal position monitoring and MLC target tracking
A. Sawant, R. Smith, R. Venkat L. Santanam, B. Cho, P. Poulsen, L. Newell, H. Cattell, P. Parikh and P. Keall Int J Radiat Oncol Biol Phys. July 2009 74(2) 575-582
Management of three-dimensional intrafraction motion through real-time DMLC tracking
A. Sawant, R. Venkat, V Srivastava, D. Carlson, H. Cattell, S. Povzner and P. Keall Medical Physics 2008 35 2050-2061

Honors & Awards

  • AAPM Research Seed Funding Initiative Award
    4D Adaptive Radiotherapy Using In-Room MRI for Treating Moving and Deforming Targets (2008)
  • XVth ICCR meeting
    2nd place in the Young Investigator Competition (2007)
  • University of Michigan
    Nominated for Distinguished Dissertation Award (2006)
  • AAPM annual meeting
    1st place in the John R. Cameron Young Investigator Competition (2004)