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Zhongxiang Zhao, Ph.D.

Present Title & Affiliation

Primary Appointment

Assistant Professor, Department of Radiation Physics, Division of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX

Office Address

The University of Texas MD Anderson Cancer Center
1400 Pressler St.
Unit Number: 1420
Houston, TX 77030-3722
Room Number: FCT8.6082
Phone: 713-563-0244
Fax: 713-563-2545

Education & Training

Degree-Granting Education

2004 University of Cincinnati, Cincinnati, OH, PHD, Nuclear Engineering

Postgraduate Training

8/2010-8/2011 Clinical Fellowship, Medical Physics, University of Florida, Jacksonville, FL
7/2008-7/2010 Clinical Residency, Medical Physics, University of Florida, Jacksonville, FL

Professional Memberships

American Association of Medical Physicists
Junior Member, 4/2007-present

Selected Publications

Peer-Reviewed Original Research Articles

1. Taddei PJ, Zhao Z, Borak TB. A comparison of the measured responses of a tissue-equivalent proportional counter to high energy heavy (HZE) particles and those simulated using the Geant4 Monte Carlo code. Radiat Meas 43(9-10):1498-1505, 10/2008. PMCID: PMC2942785.
2. Pisacane VL, Dolecek Q, Maas F, Nelson M, Taddei P, Zhao Z. 2006-01-2146 MIDN, MIcroDosimeter iNstrument (MIDN) on MidSTAR-I. SAE Trans. J. Aerospace 115:355-359, 2007.
3. Su B, Zhao Z, Hawari AI Chen J. Investigation on using passive neutron counting techniques for online burnup monitoring of pebble bed reactor fuels. Progress in Nuclear Energy 48:686-702, 2006.
4. Zhao, Maldonado I. Speedup of particle transport problems with a beowulf cluster. Amer Jour of Applied Sciences 3(8):1948-1951, 2006.
5. Chen J, Hawari AI, Zhao Z. Gamma-ray spectrometry analysis of pebble bed reactor fuel using Monte Carlo simulations. Nuclear Instruments and Methods in Physics Research A 505:393-396, 2003.
6. Hawari AI, Chen J, Su B, Zhao Z. Assessment of on-line burnup monitoring of pebble red reactor fuel using passive gamma-ray spectrometry. IEEE Transactions on Nuclear Science 49(3):P1249-1253, 2002.


1. Su Z, Zhao, Zhao T, Li Z. A comprehensive approach for SBRT irradiation on RPC spine phantom. AAPM Annual meeting, general poster discussion, 2011.
2. Zhao Z, Toramatsu C, Slopsema R, Li Z. Measurements of field size factor for proton therapy. AAPM Annual meeting, general poster discussion, 2011.
3. Zhao Z, Toramatsu C, Slopsema R, Su Z, Li Z. The feasibility of treating prostate patients without using range compensator in passively scattered proton therapy: a dosimetry study. AAPM Annual Meeting, oral presentation, 2011.
4. Li Z, Zhao Z. The impact of titanium implant to distal falloff of a clinical proton beam. PTCOG 49, 2010.
5. Zhao Z, Li Z. Comparison of entrance dose of uniform scanning and double scattering modes in proton therapy. Med Phys 36:2678, 2009.
6. Hsi W, Zhao Z, Slopsema R, Li Z. Doses at shallow depths of modulated proton beams delivered by double scattering and uniform scanning methods. PTCOG 48, 2009.
7. Zhao Z, Duvvuri S, Flampouri S, Horne, Huh S. A new cone-beam CT daily QA phantom for stereotactic radiosurgery. Med Phys 35:2792, 2008.
8. Keole S, Zhao Z, Hsi W, Vargas C, Morris C, Mendenhall W, Henderson R, Mendenhall N. Comparing the high-dose region isodose fall-off for protons versus IMRT in prostate cancer: is IMRT superior?. ASTRO, 2008.
9. Zhao Z, Li Z, Hsi W, Slopsema R. Effect of range compensators on entrance doses in proton therapy. Med Phys 35:2783, 2008.
10. Taddei PJ, Zhao Z, Borak T. The response of a tissue-equivalent proportional counter to high energy ions using the Monte Carlo code Geant4. ICRS, 11th International Conference on Radiation Shielding, Pine Mountain, GA, 2008.
11. Li Z, Slopsema R, Flampouri S, Yeung D, Lin L, Zhao Z, Palta J. A periodic machine QA program for proton therapy. Med Phys 34:2408, 2007.
12. Slopsema R, Yeung D, Flampouri S, Lin L, Zhao, Li Z. Monitor unit calculation in eclipse proton therapy treatment planning. Med Phys 34(2470), 2007.

Last updated: 10/9/2015