Robert D. Stewart, Ph.D. Associate Professor and Assistant Head of Health Sciences Director, Radiological Health Science Program Phone: (765) 494-1444 Fax: (765) 496-1377 E-mail: trebor@purdue.edu Personal webpage: http://rh.healthsciences.purdue.edu/faculty/rds.html Full directory listing

Education

Research: Microdosimetry and Computational Radiation Biology

• Mechanistic modeling of biological systems (e.g., see the Virtual Cell, MCDS and MCER software).
• Radiation physics, dosimetry and microdosimetry.
• Monte Carlo and discrete ordinates radiation transport methods.
• Radiation therapy for the treatment of cancer (emphasis on biological optimization of treatment plan designs).
• Mathematical modeling, numerical analysis, optimization techniques, and high-performance computing.

Teaching

Received the 2005 and 2006 Robert R. Landolt Teaching Award, Nominated for the Murphy Teaching Award in 2004, 2005 and 2006

• HSCI 312 Radiation Science Fundamentals
• HSCI 540 Radiation Biology

Representative Publications

X.A. Li, J.Z. Wang, R.D. Stewart, S.J. DiBiase, D. Wang and C.A. Lawton, Designing equivalent treatment regimens for prostate radiotherapy based on equivalent uniform dose, British Journal of Radiology, 81, 59-68(2008).

R.D. Stewart and X.A. Li, BGRT: Biologically Guided Radiation Therapy -- the future is fast approaching! Medical Physics 34, 3739-3751 (2007). Also selected for publication in the Virtual Journal of Biological Physics Research, 14(6), September 15, 2007

V.A. Semenenko and R.D. Stewart. Fast Monte Carlo simulation of DNA damage formed by electrons and light ions. Phys. Med. Biol. 51(7), 1693-1706 (2006)

R.D. Stewart, R.K. Ratnayake, and K. Jennings. Microdosimetric model for the induction of cell killing through medium-borne signals. Radiat. Res. 165, 460-469 (2006).

V.A. Semenenko, R.D. Stewart, E.J. Ackerman. Monte Carlo Simulation of Base and Nucleotide Excision Repair of Clustered DNA Damage Sites. I. Model Properties and Predicted Trends. Radiat. Res. 164, 180-193 (2005).

D.J. Carlson, R.D. Stewart, X.A. Li, K. Jennings, J.Z. Wang, and M. Guerrero. Comparison of in vitro and in vivo alpha/beta ratios for prostate cancer. Phys. Med. Biol. 49, 4477-4491 (2004).

J.Z. Wang, X.A. Li., W. D'Douza, R.D. Stewart. Impacts of prolonged dose-delivery time on tumor control: a note of caution for IMRT, Int. J. Radiat. Oncol. Biol. Phys. 57(2), 543-552 (2003).

X.A. Li, J.Z. Wang, R.D. Stewart and S.J. DiBiase, Dose escalation in permanent brachytherapy for prostate cancer: dosimetric and biological considerations. Phys. Med. Biol. 48, 2753-2765 (2003).

R.D. Stewart, W.E. Wilson, J.C. McDonald, and D.J. Strom, Microdosimetric Properties of Ionizing Electrons in Water: A Test of the PENELOPE code system. Phys. Med. Biol. 47(1), 79-88 (2002).

R.D. Stewart, Two-Lesion Kinetic Model of DSB Rejoining and Cell Killing. Radiat. Res. 156(4), 365-378 (2001).