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Narayan Sahoo, Ph.D.

Present Title & Affiliation

Primary Appointment

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

Research Interests


Radiation dosimetry of small fields, dose distribution in inhomogeneous media, 3-D dosimtery and proton beam dosimetry.

Treatment plan optimization and evaluation.

Biophysical aspects of radiation therapy including biologically conformal radiation therapy planning and multiscale modeling of radiation response.

Electronic structure and properties of biomolecules.

Education & Training

Degree-Granting Education

1986 State University of New York at Albany, Albany, NY, PHD, Physics
1978 Institute of Physics, Bhubaneswar, Orissa, India, Diploma in Advanced Physics, Physics
1976 Utkal University, Bhubaneswar, Orissa, India, M.Sc., Physics
1974 Utkal University, Bhubaneswar, Orissa, India, B.Sc. (Honors), Physics

Postgraduate Training

4/1990-12/1992 Post-doctoral Fellowship, Department of Medical Physics, Memorial Sloan-Kettering Cancer Center, New York, NY, John S. Laughlin, Ph.D.

Board Certifications

6/1995 American Board of Radiology: Therapeutic Radiological Physics


Academic Appointments

Associate Member, Department of Radiation Physics, Division of Radiation Oncology, The University of Texas Graduate School of Biomedical Sciences, Houston, TX, 9/2004-4/2012
Associate Professor, Department of Radiation Physics, Division of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 8/2004-8/2010

Administrative Appointments/Responsibilities

Director, Advanced Radiation Physics Fellowship Program for Proton Therapy, Department of Radiation Physics - Patient Care, Division of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 1/2009-present
Member, Radiation Physics Resident Steering Committe, Department of Radiation Physics - Patient Care, Division of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 3/2008-6/2010

Institutional Committee Activities

Member, Nonphysician Clinical Education Committee, UTMDACC, 3/2009-present

Honors and Awards

2011 Fellow, American Association of Physicists in Medicine
2007-2016 Multi-year appointment award, UT MD Anderson Cancer Center, Houston
2007 Outstanding Achievement Award for contributions in the field of Medical Physics, Department of Radiation Physics, UT MD Anderson Cancer Center, Houston
1985 Honors for academic excellence, State University of New York at Albany

Professional Memberships

American Association of Physicists in Medicine
Member, Rules Committee, 2009-present
Member, Practice Contract Work Group, 2009
Member, Medical Physics Residency Training and Promotion Subcommittee, 2008-2010
Member, Subcommittee on Practice Guidelines, 2007-present
Member, Committee for Medical Physics Education of Physicians, 1999-2004
Member, 1992-present
American Physical Society
Member, 1985-present
American Society for Radiation Oncology, VA
Member, 2000-present

Selected Publications

Peer-Reviewed Original Research Articles

1. Sha RL, Reddy YP, Sahoo N. A linear source table to determine the treatment times for cylindrical applicators used in high dose rate brachytherapy. Brachytherapy 10:249-252, 2011.
2. Zullo JR, Kudchadker RJ, Zhu, XR, Sahoo N, Gillin MT. LIF TLD-100 as a dosimeter in high energy proton beam therapy-can it yield accurate results? Medical Dosimetry 35(1):63-66, 2010.
3. Wang X, Sahoo N, Zhu XR, Zullo JR, Gillin MT. Measurement of Neutron dose equivalent and its dependence on beam configuration at the MD Anderson Proton Therapy Center Houston. International Journal of Radiation Oncology Biology Physics 76(5):1563-1570, 2010.
4. Arjomandy B, Sahoo N, Zhu XR, Zullo JR, Wu RY, Zhu M, Ding X, Martin C, Ciangaru G, Gillin M. An overview of the comprehensive proton therapy machine quality assurance procedures implemented at The University of Texas M. D. Anderson Cancer Center Proton Therapy Center-Houston. Med Phys 36(6):2269-2282, 6/2009.
5. Beddar s, Archambault L, Sahoo N, Poenisch F, Chen G, Gillin M, Mohan R. Exploration of the potential of liquid scintillators for real-time 3D dosimetry of intensity modulated proton beams. Med Phys 36(5):1736-1743, 5/2009. PMID: 19544791.
6. Arjomandy B, Sahoo N, Cox J, Lee A, Gillin MT. Comparison of surface doses from spot scanning and passively scattered proton therapy beams. Phys Med Biol 54(14):N295-N302, 2009. e-Pub 6/23/2009. PMID: 19550003.
7. Sahoo N, Zhu XR, Arjomandy B, Ciangaru G,Lii M, Amos R, Wu R, Gillin M. A procedure for calculation of monitor units for passively scattered proton radiotherapy beams. Med Phys 35(11):5088-5097, 11/2008. PMID: 19070243.
8. Sahoo N, Kazi AM, Hoffman M. Semi-empirical procedures for correcting detector size effect on clinical MV x-ray beam profiles. Med Phys 35(11):5124-5133, 11/2008. PMID: 19070247.
9. Arjomandy B, Sahoo N, Ding, X, Gillin, M. Use of a two-dimensional ionization chamber array for proton therapy beam quality assurance. Med Phys 35(9):3889-3894, 9/2008. PMID: 18841839.
10. Titt U, Sahoo N, Ding X, Zheng Y, Newhauser WD, Zhu XR, Polf JC, Gillin MT, Mohan R. Assessment of the accuracy of an MCNPX-based Monte Carlo simulation model for predicting three-dimensional absorbed dose distributions. Phys Med Biol 53(16):4455-70, 8/2008. PMID: 18670050.
11. Li Y, Zhang X, Lii M, Sahoo N, Zhu XR, Gillin M, Mohan R. Incorporating partial shining effects in proton pencil-beam dose calculation. Phys Med Biol 53(3):605-616, 2008. e-Pub 1/10/2008. PMID: 18199905.
12. Wang B, Goldstein M, Xu XG, Sahoo N. Adjoint Monte Carlo method for prostate external photon beam treatment planning: an application to 3D patient anatomy. Phys Med Biol 50(5):923-35, 3/2005. e-Pub 2/17/2005. PMID: 15798265.
13. Scheicher R, Cammarere D, Sahoo N, Das T, Briere T, Pratt F, Nagamine K. First-Principles Study of Muon and Muonium Trapping in the Protein Chain of Cytochrome c. . Physica B 326:30-33, 2003.
14. Sahoo N. Measurement of transit time of a remote after-loading high dose rate brachytherapy source. Med Phys 28(8):1786-90, 8/2001. PMID: 11548950.
15. Sahoo N, Ling CC, Anderson LL. Analysis of factors affecting the therapeutic gain in high dose rate gynecological implants relative to low dose rate implants. Med Phys 23(3):419-25, 3/1996. PMID: 8815385.
16. Ling CC, Roy J, Sahoo N, Wallner K, Anderson L. Quantifying the effect of dose inhomogeneity in brachytherapy: application to permanent prostatic implant with 125I seeds. Int J Radiat Oncol Biol Phys 28(4):971-8, 3/1994. PMID: 8138450.
17. Ling CC, Sahoo N, Leibel S, Anderson LL. High dose rate gynecological applications--radiobiological considerations based on the alpha-beta model. Radiother Oncol 25(2):103-10, 10/1992. PMID: 1438929.
18. Sahoo N, Ramani Lata K, Das T. First-Principles Unrestricted Hartree-Fock Investigation of Electronic Structure and Hyperfine Properties of Heme Derivatives-Hemin. Theoretica Chimica Acta 82:285-298, 1992.
19. Ramani Lata K, Sahoo N, Das T. Nature of Second Hydration Shell in Mn2+-Aquoion System-Influence on Proton Relaxivity in Nuclear Magnetic Resonance. The Journal of Chemical Physics 91:3715-3721, 1991.
20. Sahoo N Das T. Geometrical Arrangement of Water Molecules in Copper-Aquoion Complex-Influence on Shifts and Relaxivities in Nuclear Magnetic Resonance. The Journal of Chemical Physics 93:1200-1208, 1990.
21. Sahoo N Das T. Hyperfine Interactions and Relaxivities in Divalent and Trivalent Aquoion Systems. The Journal of Chemical Physics 91:7740-7748, 1989.

Grant & Contract Support

Title: "Development of a computational radiation biophysics program for studying the interaction of bio-molecules in normal and malignant tissues with ionizing radiation, contrast agents and nanomaterials, and for multiscale modeling of the radiation response"
Funding Source: UT MD Anderson Cancer Center, Department of Radiation Physics
Role: Principal Investigator
Duration: 6/2009 - 2/2011
Title: Evaluation of Enhanced Spot Beam Model for IMPT and Production of Library of Reference Measured Dose Distribution Data for Evaluation of Future Enhancements of IMPT Treatment Planning System
Funding Source: Varian Medical Systems
Role: Co-project leader
Principal Investigator: Michael Gillin, Ph.D.
Duration: 10/2008 - 9/2010
Title: Optimizing Proton Radiation Therapy
Funding Source: NIH/NCI
Role: Co-Investigator
Principal Investigator: Thomas DeLaney, MD
Duration: 9/25/2008 - 8/31/2011

Last updated: 7/24/2014