Associate Professor and Physicist

Specialties

• Radiation physics
• IMRT
• 3-D planning
• Wedge filter optimization
• Inverse planning

Educational Background

• PhD, University of Toronto
• MS, Shanghai Observatory, Academia Sinica

Professional Societies and Committees

• American Association of Physicists in Medicine (AAPM)

Honors and Awards

• Postdoctoral fellowship, Stanford University School of Medicine
• Postdoctoral fellowship, Imaging Research, Sunnybrook Health Science Center, University of Toronto
• Postdoctoral fellowship, Institute of Astronomy & Astrophysics, Academia Sinica, Taipei, Taiwan

Patents and Copyrights

• Co-inventor, “Radiation therapy system using interior-point methods and convex models for intensity modulated fluence map optimization,” patent pending.
• Co-inventor, “Field splitting for intensity-modulated fields of large size,” patent pending.
• Co-inventor, “Leaf sequencing method and system,” patent pending.

Publications

• M. Ranade, B. Lynch, J. G. Li, and J. F. Dempsey. A high-speed scintillation-based electronic portal imaging device to quantitatively characterize IMRT delivery. Medical Physics, 33:106-110, January 2006.
• J. G. Li , C. Liu, S. Kim, R. J. Amdur, and J. R. Palta. Matching IMRT Fields with Static Photon Field in the Treatment of Head and Neck Cancer. Medical Dosimetry, 30:135-138, Autumn 2005.
• H. D. Pacholke, R. J. Amdur, C. G. Morris, J. G. Li, J. F. Dempsey, R. W. Hinerman, and W. M. Mendenhall. Late Xerostomia After Intensity-Modulated Radiation Therapy Versus Conventional Radiotherapy. American Journal of Clinical Oncology, 28:351-358, August 2005.
• J. F. Dempsey, H. E. Romeijn, J. G. Li, D. A. Low, and J. R. Palta. A Fourier Analysis of the Dose Grid Resolution Required for Accurate IMRT Fluence Map Optimization. Medical Physics, 32:380-388, February 2005.
• S. Kamath, S. Sahni, S. Ranka, J. G. Li, and J. Palta. Optimal Field Splitting for Large Intensity-Modulated Fields. Medical Physics, 31:3314-3323, December 2004.
• J. S. Gilroy, R. J. Amdur, D. Louis, J. G. Li, and W. M. Mendenhall. Irradiating the Groin Nodes Without Breaking a Leg: A Comparison of Techniques for Groin Node Irradiation. Medical Dosimetry, 29:258-264, Winter 2004.
• O. A. Zeidan, J. G. Li, D. A. Low, and J. F. Dempsey. Comparison of Small Photon Beams Measured Using Radiochromic and Silver-Halide Films in Solid Water Phantom. Medical Physics, 31:2730-2737, October 2004.
• S. Kim, H. C. Akpati, J. G. Li, C. R. Liu, R. J. Amdur, and J. R. Palta. An immobilization system for claustrophobic patients in head and neck intensity-modulated radiation therapy. International Journal of Radiation Oncology, Biology, Physics. 59:1531-1539, August 2004.
• S. Kamath, S. Sahni, S. Ranka, J. G. Li, and J. Palta. A Comparison of Step-and-Shoot Leaf Sequencing Algorithms that Eliminate Tongue-and-Groove Effect. Physics in Medicine and Biology, 49:3137-3143, July 2004.
• A. Stell, J. G. Li, O. Zeidan, and J. F. Dempsey. An Extensive Log-file Analysis of Step-and-shoot Intensity Modulated Radiation Therapy Segment Delivery Errors. Medical Physics, 31:1593-1602, June 2004.
• H. E. Romeijn, J. F. Dempsey, and J. G. Li. A Unifying Framework for Multi-criteria Fluence Map Optimization Models. Physics in Medicine and Biology, 49:1991-2013, May 2004.
• R. J. Amdur, J. G. Li, C. Liu, R. W. Hinerman, and W. M. Mendenhall. Unnecessary Laryngeal Irradiation in the IMRT Era. Head and Neck. 26:257-264, March 2004.
• O. Zeidan, J. G. Li , M. Ranade, A. Stell, and J. F. Dempsey. Verification of Step-and-Shoot IMRT Delivery using a Fast Scintillation Camera. Medical Physics, 31:463-476, March 2004.
• S. Kim, H. Akpati, J. Kielbasa, J. G. Li , C. Liu, R. J. Amdur, and J. R. Palta. Evaluation of Intrafraction Patient Movement for CNS and Head and Neck IMRT. Medical Physics, 31:500-506, March 2004.
• S. Kamath, S. Sahni, J. Palta, S. Ranka, and J. G. Li , Optimal Leaf Sequencing with Elimination of Tongue-and-Groove Underdosage. Physics in Medicine and Biology. 49:N7-N19, February 2004.
• Romeijn, H. E., Ahuja, R. K., Dempsey, J. F., Kumar, A., and Li, J. G. A Novel Linear Programming Approach to Fluence Map Optimization for Intensity Modulated Radiation Therapy Treatment Planning. Physics in Medicine and Biology, 48:3521-3542, November 2003.
• Yang, Y., Xing, L., Li, J. G., Palta, J., Chen, Y., Luxton, G., and Boyer, A. Independent Dosimetric Calculation with Inclusion of Head Scatter and MLC Transmission for IMRT. Medical Physics, 30:2937-2947, November 2003.
• Li, J. G. , Dempsey, J. F., Ding, L., Liu, C., and Palta, J. R. Validation of Dynamic MLC-Controller Log Files Using a Two-Dimensional Diode Array. Medical Physics. 30:799-805, May 2003.
• Kamath, S., Sahni, S., Li, J. G., Palta, J., Ranka, S. Leaf Sequencing Algorithms for Segmented Multileaf Collimation. Physics in Medicine and Biology, 48:307-324, February 2003.
• Pugachev, A., Li, J. G., Boyer, A. L., Hancock, S. L., Le, Q.-T., Donaldson, S. S., Xing, L. Role of Beam Orientation Optimization in Intensity-Modulated Radiation Therapy. International Journal of Radiation Oncology, Biology, Physics.50:551-560, June 2001.
• Xing, L., Li, J. G. Computer Verification of Fluence Map for Intensity Modulated Radiation Therapy. Medical Physics, 27: 2084-2092, September 2000.
• Li, J. G. , Xing, L. Inverse Planning Incorporating Organ Motion. Medical Physics, 27:1573-1578, July 2000.
• Li, J. G. , Williams, S. S, Goffinet, D. R., Boyer, A. L., Xing, L. Breast-Conserving Radiation Therapy Using Combined Electron and Intensity-modulated Radiotherapy Technique. Radiotherapy and Oncology, 56:65-71, July 2000.
• Xing, L., Chen, Y., Luxton, G., Li, J. G., Boyer, A. L. Monitor Unit Calculation for Intensity Modulated Photon Field by a Simple Scatter-summation Algorithm. Physics in Medicine and Biology, 45:N1-N7, March 2000.
• Li, J. G. , Boyer, A. L., Xing, L. Clinical Implementation of Wedge Filter Optimization in Three-dimensional Radiotherapy Treatment Planning. Radiotherapy and Oncology, 53 :257-264, December 1999.
• Li, J. G. , Xing, L., Boyer, A. L., Hamilton, R. J., Spelbring, D. R., Turian, J. V. Matching Photon and Electron Fields with Dynamic Intensity Modulation. Medical Physics, 26 :2379-2384, November 1999.
• Xing, L., Li, J. G. , Pugachev, A., Le, Q. T., Boyer, A. L. Estimation Theory and Model Parameter Selection for Therapeutic Treatment Plan Optimization. Medical Physics, 26 :2348-2358, November 1999.
• Xing, L., Li, J. G. , Donaldson, S., Le, Q. T., Boyer, A. L. Optimization of Importance Factors in Inverse Planning. Physics in Medicine and Biology, 44 :2525-2536, October 1999.
• Li, J. G. , Stanisz, G. J., Henkelman, R. M. Integrated Analysis of Diffusion and Relaxation of Water in Blood. Magnetic Resonance in Medicine, 40:79-88, 1998.
• Stanisz, G. J., Li, J. G., Wright, G. A., Henkelman, R. M. Water Dynamics in Human Blood via Combined Measurements of T2 Relaxation and Diffusion in the Presence of Gadolinium. Magnetic Resonance in Medicine, 39:223-233, 1998.
• Rubenstein, J. D., Li, J. G., Majumdar, S., Henkelman, R. M. Image Resolution and Signal-to-Noise Ratio Requirements for MR Imaging of Degenerative Cartilage. American Journal of Roentgenology, 169:1089-1096, 1997.
• Li, J. G. , Graham, S. J., & Henkelman, R. M. A Flexible Magnetization Transfer Line Shape Derived from Tissue Experimental Data. Magnetic Resonance in Medicine, 37:866-871, 1997.
• Li, J. G. , Zhao, J.-H., Ho, P. T. P., Sage, L. J. Detection of CO Emission from Dwingeloo 1. Astronomy and Astrophysics, 307:424-426, 1996.
• Li, J. G. , Seaquist, E. R. Neutral Hydrogen Distribution in the NGC 7465 Group of Galaxies. Astronomical Journal, 107:1953-1961, 1994.
• Li, J. G. , Seaquist, E. R., Wang, Z., Sage, L. J. Aperture Synthesis Observations of HI and CO in the Early-type Starburst Galaxy NGC 3928. Astronomical Journal, 107:90-98, 1994.
• Li, J. G. , Seaquist, E. R., Wrobel, J. M., Wang, Z., Sage, L. J. The Molecular Gas and Star Formation in IRAS Bright Early-type Disk Galaxies: I. NGC 7625. Astrophysical Journal, 413:150-165, 1993.
• Li, J. G. , Seaquist, E. R., & Sage, L. J. Molecular Gas in the Early-type Starburst Galaxy NGC 3928. Astrophysical Journal, 411:L71-L74, 1993.