Associate Professor and Physicist

Specialties

• Clinical radiation physics
• Brachytherapy

Educational Background

• Postgraduate, Medical Physics Resident, Mallinckrodt Institute of Radiology, Washington University, St. Louis, MO
• DSc, Systems Science and Mathematics, Washington University, St. Louis, MO
• MS, Systems Science and Engineering, Washington University, St. Louis, MO

Professional Societies and Committees

• American Association of Physicists in Medicine (AAPM)
• American Society of Therapeutic Radiation Oncology (ASTRO)
• US Army 2005 Prostate Cancer Radiation Oncology Review Panel
• US Army 2004 Prostate Cancer Radiation Oncology Review Panel
• Radiation Therapy Committee, AAPM (since 2000)
• Chair, Brachytherapy Subcommittee, Therapy Physics Committee, AAPM, 2005
• Photon Emitting Brachytherapy Dosimetry Subcommittee, Radiation Therapy Committee, AAPM (since 2003)
• Chair, High Energy Brachytherapy Dosimetry Working Group, Photon Emitting Brachytherapy Dosimetry Subcommittee, Radiation THerapy Committee, AAPM (since 2003)
• Electronic Media Coordination Committee, AAPM (since 2003)

Honors and Awards

• Co-recipient, Farrington Daniels Award for best radiation dosimetry paper published in Medical Physics in 1993-1994, AAPM, 1994

Publications

• Li Z, Das R, DeWerd LA, Ibbott GS, Kline RW, Meigooni AS, Rivard MJ, Sloboda RS, Williamson JF, Dosimetric prerequisites for routine clinical use of photon emitting brachytherapy sources with average energy higher than 50 keV, in preparation.
• Li Z, Mutic S, Low DA, Measurement of LINAC 90^o head leakage radiation TVL values, accepted by Medical Physics, 2005.
• Li, Z., Physics and Clinical Aspects of Brachytherapy, in Technical Basis of   Radiation Therapy, 4^th ed., Levitt et al eds., Springer-Verlag (forthcoming).
• Butler WM, Huq MS, Li Z, Thomadsen BR, DeWerd LA, Ibbott GS, Mitch MG, Nath R, Rivard MJ, Williamson JF, Yue NJ, Zaider M, Letter to the editor: Third party brachytherapy seed calibrations and physicist responsibilities, Medical Physics, 2006, 33: 247-248.
• Jin JY, Klein EE, Kong FM, Li Z, An improved internal mammary irradiation technique in radiation treatment of locally advanced breast cancers, J Appl Clin Med Phys, 2005, 6: 84-93.
• Li Z, Head and Neck Brachytherapy, in Brachytherapy Physics, Thomadsen et al, eds., Medical Physics Publishing, Madison, WI, 2005.
• Li Z, Quality assurance review of brachytherapy treatment plans, in Brachytherapy Physics, Thomadsen et al, eds., Medical Physics Publishing, Madison, WI, 2005.
• Hechtman CD, Li Z, Mansur DB, Grigsby PW, Dose distribution outside of a sphere of P-32 chromic phosphorous colloid, Int. Journal of Rad Oncol Biol Phys, 2005, 63:961-968.
• Jin JY, Drzymala RE, Li Z, A simple method of independent treatment time verification in gamma knife radiosurgery using integral dose, Medical Physics 2004, 31:3337-3344.
• Perez CA, Purdy JA, Li Z, Hall EJ, Biologic and physical aspects of radiation oncology, in Principles and Practice of Gynecologic Oncology, Lippincott Williams & Wilkins, Philadelphia, PA 2004
• Rivard MJ, Butler WM, DeWerd LA, Huq MS, Ibbott GS, Li Z, Mitch MG, Nath R, Williamson JF, Erratun: “Update of AAPM task group no. 43 report: a revised AAPM protocol for brachytherapy dose calculations, Medical Physics 2004, 31: 633-674.
• Chiu-Tsao S-T, Duckworth TL, Hsiung CY, Li Z, Williamson JF, Patel NS, Harrison LB,  Thermoluminescent dosimetry of the SourceTech Medical model STM1251 125I seed, Medical Physics 2003, 30:1732-1735.
• Klein EE, Esthappan J, Li Z, Surface and buildup dose characteristics for 6, 10, and 18 MV photons from an Elekta Precise linear accelerator, Journal of Applied Clinical Medical Physics 2003, 4:1-7.
• Sehgal V, Li Z, Palta JR, Bolch WE, Application of imaging-derived parameters to dosimetry of intravascular brachytherapy sources: perturbation effects of residual plaque burden, Medical Physics 2002, 29: 1580-1589.
• Li Z, Williamson JF, Measured transverse-axis dosimetric parameters of the model STM1251 125I interstitial source, Journal of Applied Clinical Medical Physics, 2002:212-217.
• Li Z, Monte Carlo calculations of dosimetry parameters of the Urocor Prostaseed 125I source, Medical Physics 2002, 29: 1029-1034.
• Sehgal V, Li Z, Palta JR, Bolch WE, Dosimetric effect of source centering and residual plaque for b-emitting catheter based intravascular brachytherapy sources, Medical Physics 2001, 28: 2162-2171.
• Rectenwald, J. E., Pretus, H. A., Seeger, J. M., Huber, T. S., Mendenhall, N. P., Zlotecki, R. A., Palta, J. R., Li, Z. F., Hook, S. Y., Sarac, T. P., Welborn, M. B., Klingman, N.  V., Abouhamze, Z. S. and Ozaki, C. K. External-Beam Radiation Therapy for Improved Dialysis Access Patency: Feasibility and Early Safety. 2001. Radiat. Res. 156, 53–60.
• Li Z, Nalcacioglu IA, Ranka S, Sahni SK, Palta JR, Tomé W, Kim S, An algorithm for automatic, CT-based source localization after prostate implant, Medical Physics 2001, 28: 1410-1415.
• Li Z, Fan JJ, Palta JR, Experimental measurements of dosimetric parameters on the transverse axis of a new ¹²⁵I source, Medical Physics 2000, 27: 1275-1280.
• Li Z, Palta JR, Fan JJ, Monte Carlo calculations and experimental measurements of dosimetry parameters of a new ¹⁰³Pd Source, Medical Physics 2000, 27: 1108-1112.
• Yu Y, Anderson LL, Li Z, Mellenberg DE, Nath R, Schell MC, Waterman FM, Wu A, Blasko JC, Permanent prostate seed implant brachytherapy: report of the American Association of Physicists in Medicine Task Group No. 64, Medical Physics 1999, 26: 2054-76.
• Nath R, Amols H, Coffey C, Duggan D, Jani S, Li Z, Schell MC, Soares C, Whiting J, Cole PE, Crocker I, Schwartz R, Intravascular brachytherapy physics: report of the AAPM Radiation Therapy Committee Task Group no. 60, American Association of Physicists in Medicine, Medical Physics 1999, 26: 119-52.
• Palta JR, Liu CR, Li Z, Acceptance testing and commissioning a 3D RTP system, in A Practical Guide to 3-D Planning and Conformal Radiation Therapy, Purdy JA and Starkshall G eds., Advanced Medical Publishing, Inc., 1999 Madison, WI.
• Li Z, Mitchell TP, Palta JR, Liu CR, A quality assurance test tool for high dose-rate remote afterloading brachytherapy units, Medical Physics 1998, 25: 232-235.
• Liu CR, Li Z, Palta JR, Characterizing output for the Varian enhanced dynamic wedge field, Medical Physics 1998, 25: 64-70.
• Li Z, Liu CR, Palta JR, Optimized dose distribution in an HDR vaginal cylinder, Int. Journ. of Rad. Onc. Biol. Phys. 1998, 41: 239-244.
• Li Z, Klein EE, Surface and peripheral dose of dynamic and physical wedges, Int. Journ. of Rad. Onc. Biol. Phys. 1998, 37: 921-926.
• Liu CR, Li Z, Palta JR, QC in virtual simulation for 3-D radiation therapy, Adv. For Admin. In Radio. & Rad. Onc. 1998, 8: 35-40.
• Liu CR, Waugh B, Li Z, Zhu TR, Palta JR, Commissioning the enhanced dynamic wedge on a ROCS TPS system, Med. Dosim. 1997, 22: 231-236.
• Klein EE, Li Z, Low DA, Feasibility study of multileaf collimated electrons with a scattering foil based accelerator, Radiotherapy and Oncology 1996, 41: 189-196.
• Das RK, Li Z, Perera H, Williamson JF, Accuracy of Monte Carlo photon transport simulation in characterizing brachytherapy dosimeter energy-response artefacts, Phys. Med. Biol. 1996, 41:995-1006
• Low DA, Li Z, Klein EE, Verification of milled two-dimensional photon compensating filters using an electronic portal imaging device, Medical Physics 1996, 23: 929-938.
• Williamson JF, Li Z, Monte Carlo aided dosimetry of the MicroSelectron Pulsed and High Dose-Rate Ir-192 sources, Medical Physics 1995, 22:809-819.
• Low DA, Li Z, Drzymala RE, Minimization of target positioning error in accelerator-based radiosurgery, Medical Physics 1995, 22:443-448.
• Meigooni AS, Li Z, Mishra V, Williamson JF, Dosimetric Analysis of Plastic Water Phantom Material, Medical Physics 1994, 21:1983-1987.
• Perera H, Williamson JF, Li Z, Mishra V, Meigooni AS, Dosimetric characteristics of a new Ytterbium-169 seed: an experimentally-validated Monte Carlo investigation, Int. J. Rad. Onc. Bio. Phys. 1994, 28:953-970.
• Li Z, Williamson JF, Perera H, Monte Carlo calculation of Kerma-to-a-point near media interfaces, Phys. Med. Bio. 1993, 38:1825-1840.
• Williamson JF, Li Z, Wong J, One-dimensional scatter-subtraction method for brachytherapy dose calculations near bounded heterogeneities, Medical Physics 1993, 20: 233-244.
• Williamson JF, Perera H, Li Z, Lutz WR, Comparison of calculated and measured heterogeneity correction factors for I-125, Cs-137, and Ir-192 brachytherapy sources near localized heterogeneities, Medical Physics 1993, 20: 209-222.
• Weinhous MS, , Li Z, Holman M, The selection of portal aperture using interactively displayed beam's eye sections, Int. J. Rad. Onc. Bio. Phys. 1992, 22: 1089-1092.
• Li Z, Williamson JF, Volume-based geometric modeling for radiation transport calculations. Medical Physics 1992, 19: 667-677.
• Williamson JF, Baker RS, Li Z, A convolution algorithm for brachytherapy dose calculations in heterogeneous geometries, Medical Physics 1991, 18: 1256-1265.
• Li Z, Tarn TJ, Bejczy AK, Dynamic workspace analysis of multiple cooperating robot arms, IEEE Transactions on Robotics and Automation 1991, 7: 589-596.
• Tarn TJ, Bejczy AK, Yun X, Li Z, Effect of motor modeling on robot arm control, IEEE Transactions on Robotics and Automation, 1991, 7: 114-122.
•   Li Z, Tarn TJ, Bejczy AK, Kinematic and dynamic task space motion planning and robot control, in Advances in Control and Dynamic Systems, Academic Press, 1991, New York, NY.