Steven MorrillProfessor

Research Interests:

  • Radiation Therapy Treatment Planning Optimization
  • Biological Cost Functions
  • Monte Carlo Transport
  • Parallel-Processing Applications in Radiation Therapy

Clinic Focus:

  • HDR (High Dose Rate) Treatment Planning and Delivery
  • Sterotactic radiosurgery (SRS) and stereotactic radiation therapy (SRT)
  • Optimized Treatment Planning Systems
  • Advanced Treatment Techniques

Education/Training :

  • B.S. Physics / Applied Mathematics, Weber State College, Ogden Utah, Magna cum Laude
  • Ph.D. Nuclear Physics, Brigham Young University, Provo Utah



  • Liang, J. Penagaricano, D. Zheng, S. Morrill, X. Zhang, P. Corry, R.J. Griffin, E.Y. Han, M. Hardee, V. Raranatherathorn, Radiobiological impact of dose calculation algorithms on biologically optimized IMRT stereotactic body radiation therapy plans, Radiat Oncol, 11(1):10, 2016.
  • Zhang, J. Penagaricano, Y Yan, X. Liang, S. Morrill, P. Corry, V. Ratanatharathorn, Initial Clinical Experience of Spatially Fractionated Radiotherapy (GRID) using Helical Tomotherapy. Journal of Applied Clinical Medical Physics, 2015.
  • Bayouth JE, Wendt D, Morrill SM: MLC Quality Assurance Techniques for IMRT Applications, Medical Physics 30(5):743-750, 2003.
  • Morrill SM, Lane RG, Rosen II: Constrained Simulated Annealing for Optimized Radiation Therapy Treatment Planning. Computer Methods and Programs in Biomedicine 33:135-144; 1990.
  • Morrill SM, Rosen II, Lane, RG, Belli JA: The Influence of Dose Constraint Point Placement on Optimized Radiation Therapy Treatment Planning. International Journal Radiation Oncology Biology Physics 33:129-141; 1990.


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