Lalith Kumaraswamy, PhD, DABR Lalith Kumaraswamy, PhD, DABR

Lalith Kumaraswamy


About Lalith Kumaraswamy


Patient imaging plays a crucial role in Radiation therapy. Using an Electronic Portal Imaging Device to capture images during treatments permits clinicians not only to track tumor motion, but also could be utilized to modify subsequent treatments (adaptive radiation therapy). My research interest involves utilizing these imaging techniques to achieve maximum therapeutic effect.


Roswell Park Comprehensive Cancer Center
  • Assistant Professor
  • Staff Physicist, Department of Radiation Medicine
  • Director, Quality Assurance Program Department of Radiation Medicine


Education and Training:

  • 2015 - PhD - University at Buffalo, Roswell Park Graduate Division, Buffalo, NY, Department of Molecular and Cellular Biophysics and Biochemistry
  • 2003 - MSc - Department of Physics, McGill University, Montreal, QC
  • 2000 - BSc (hon) - Department of Physics, McMaster University, Hamilton, ON

Board Certification:

  • American Board of Radiology

Professional Memberships:

  • American Association of Physicist in Medicine


  • Bailey D, Kumaraswamy L, Podgorsak MB. A fully electronic intensity-modulated radiation therapy quality assurance (IMRT QA) process implemented in a network comprised of independent treatment planning, record and verify, and delivery systems. Radiology and oncology 2010;44(2):124-130
  • Bailey DW, Kumaraswamy L, Podgorsak MB. An effective correction algorithm for off-axis portal dosimetry errors. Medical physics 2009; 36(9):4089-4094
  • Bakhtiari M, Kumaraswamy L, Bailey DW, De Boer S, Malhotra HK, Podgorsak MB. Using an EPID for patient-specific VMAT quality assurance. Medical physics 2011; 38(3):1366-1373
  • Kumaraswamy L, DeBoer S, Jaggernauth W, Podgorsak M. Shielding methods and dose estimates to ovaries for patients with cervical carcinoma. International journal of radiation oncology, biology, physics 2008; 72(1 Suppl.):S589
  • Kumaraswamy L, Liu J, Podgorsak M. Treatment planning for large patients with anatomy outside of imager FOV. Medical physics 2007; 34(6):2500
  • Metuge P, Kumaraswamy L, Fernando S, Hales L, Stanley T, Podgorsak M.Electronic compensation vs. regular 3 field for left sided breast with positive SCV and IFV nodes. International journal of radiation oncology, biology, physics 2008; 72(1 Suppl.):S519-S520
  • Bailey DW, Nelms BE, Attwood K, Kumaraswamy L, Podgorsak MB. Statistical variability and confidence intervals for planar dose QA pass rates. Medical physics 2011; 38(11):6053-6064
  • Bailey DW, Kumaraswamy L, Bakhtiari M, Malhotra HK, Podgorsak MB. EPID dosimetry for pretreatment quality assurance with two commercial systems. Journal of applied clinical medical physics 2012; 13(4):82-99