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      Christopher L. Nelson Image

      Christopher L. Nelson, Ph.D., DABR

      Department of Radiation Physics, Division of Radiation Oncology

      Present Title & Affiliation

      Primary Appointment

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

      Dual/Joint/Adjunct Appointment

      Service Chief of Physics, Houston Area Locations, Radiation Physics - Pt Care, The University of Texas MD Anderson Cancer Center, Houston, Texas

      Education & Training

      Degree-Granting Education

      2007The University of Texas Health Science Center at Houston - Graduate School of Biomedical Sciences, Houston, Texas, US, Medical Physics, Ph.D
      2003East Carolina University, Greenville, North Carolina, US, Medical Physics, M.S
      2001East Carolina University, Greenville, North Carolina, US, Chemistry/Physics, BA

      Postgraduate Training

      2015-2015The Physics of Elekta Linear Accelerators, Elekta, Atlanta, Georgia
      2015-2015Pinnacle Physics Modeling, Philips Medical Systems, Cleveland, Ohio
      2012-2012The Physics of Truebeam Linear Accelerators, Varian Medical Systems, Las Vegas, Nevada
      2008-2008Oncentra Brachytherapy Physics Course, Nucletron, Columbia, Maryland
      2004-2004Dosimetry of High Energy Electron and X-ray Therapy Machines Short Course, The University of Texas, Houston, Texas
      2004-2004Interstitial and Intracavitary Dosimetry: Basic Methods and Calculations Short Course, The University of Texas M.D. Anderson Cancer Center, Houston, Texas
      2004-2004Introduction to Radiotherapy Physics Principles and Calibrations, Short Course, The University of Texas, Houston, Texas
      2004-2004External Beam Dosimetry, Short Course, The University of Texas M.D. Anderson Cancer Center, Houston, Texas

      Licenses & Certifications

      2021American Board of Radiology
      2010Texas Medical Board

      Experience & Service

      Faculty Academic Appointments

      Associate Professor, Radiation Physics - Patient Care, The University of Texas MD Anderson Cancer Center, Houston, TX, 2017 - 2024

      Associate Professor, Radiation Physics - Patient Care, The University of Texas Health Science Center at Houston, GSBS, Houston, TX, 2017 - 2022

      Assistant Professor, Radiation Physics - Patient Care, The University of Texas Health Science Center at Houston, GSBS, Houston, TX, 2015 - 2017

      Assistant Professor, Radiation Physics - Patient Care, The University of Texas MD Anderson Cancer Center, Houston, TX, 2010 - 2017

      Instructor, Radiation Physics - Patient Care, The University of Texas MD Anderson Cancer Center, Houston, TX, 2007 - 2010

      Administrative Appointments/Responsibilities

      Service Chief of Physics, Houston Area Locations, Radiation Physics - Patient Care, The University of Texas MD Anderson Cancer Center, Houston, TX, 2020 - Present

      Service Chief, HALs North, Radiation Physics - Patient Care, The University of Texas MD Anderson Cancer Center, Houston, Texas, 2019 - 2019

      Extramural Institutional Committee Activities

      Lead initiative to overhaul, GYN Brachytherapy program, The University of Texas MD Anderson Cancer Center, 2022 - Present

      Member, Radiation Oncology Automation Working Group, The University of Texas MD Anderson Cancer Center, 2021 - Present

      Member, Radiation Oncology Cybersecurity Planning Committee, The University of Texas MD Anderson Cancer Center, 2021 - Present

      Member, New Technology Committee, The University of Texas MD Anderson Cancer Center, 2021 - Present

      Member, CT On Rails Replacement Committee, The University of Texas MD Anderson Cancer Center, 2021 - 2021

      Member, Radiation Oncology Informatics Committee, The University of Texas MD Anderson Cancer Center, 2020 - Present

      Member, Division Clinical Operations Committee, The University of Texas MD Anderson Cancer Center, 2020 - Present

      Committee Member, Radiation Oncology Cancer Network Steering Committee, The University of Texas MD Anderson Cancer Center, 2020 - Present

      Member, Technology Workstream: RadOnc Technology Workstream, The University of Texas MD Anderson Cancer Center, 2020 - 2021

      Co Chair, Technology Workgroup: Breast Treatment Standardization, The University of Texas MD Anderson Cancer Center, 2020 - 2021

      Member, UTMB/HAL Integration working group, The University of Texas MD Anderson Cancer Center, 2020 - Present

      Member, Review Panel, ROSI, Advanced Imaging 2020, The University of Texas MD Anderson Cancer Center, 2020 - 2020

      Committee Member, Burnout Committee, The University of Texas MD Anderson Cancer Center, 2018 - 2019

      Member, RO-Clinical Research, The University of Texas MD Anderson Cancer Center, 2017 - Present

      Committee Member, Patient Transfer Committee, The University of Texas MD Anderson Cancer Center, 2017 - Present

      Committee Member, Medical Physics Residency Rotation Supervisory Committee, The University of Texas MD Anderson Cancer Center, 2015 - Present

      Committee Member, RCC-TMC RO Expansion Committee (CNS), The University of Texas MD Anderson Cancer Center, 2015 - Present

      Committee Member, Radiation Safety Committee, The University of Texas MD Anderson Cancer Center, 2013 - Present

      Honors & Awards

      2025George Starkschall Award of Excellence for an Outstanding Radiation Oncology Physics Article, American Association of Physicists in Medicine (AAPM)
      2022Best in Professional Award at AAPM Meeting
      2005LAP Award of Excellence for the JACMP Best Radiation Oncology Article
      2003 - 2006UT-H Graduate School of Biomedical Sciences Travel Award

      Professional Memberships

      American Board of Radiology (ABR)

      2010 - Present

      Southwest Chapter of AAPM (SWAAPM)

      2010 - Present

      American Association of Physicists in Medicine (AAPM)

      2007 - Present

      Selected Presentations & Talks

      Regional Presentations

      1. 2015. Use and Applications of Mobius 3D and Mobius FX. Conference. Use and Applications of Mobius 3D and Mobius FX. Anaheim, CA, US.
      2. 2015. Clinical Experience using Mobius 3D and FX. Conference. Clinical Experience using Mobius 3D and FX. Galveston, TX, US.

      National Presentations

      1. 2026. Automated Analysis Tool for Annual Beam-Scanning QA. Poster. 68th AAPM Annual Meeting & Exhibition.
      2. 2025. A Robust Radiotherapy Continuity System that Enables Patient Treatments during a Cybersecurity Event. Poster. ASTRO's 67TH Annual Meeting. San Francisco, CA, US.
      3. 2025. Dual Energy Cone Beam Computed Tomography for Artifact Reduction and Enhanced Image Quality Using Existing Hardware in Radiation Therapy. Poster. 67th AAPM Annual Meeting & Exhibition. Washington, DC, US.
      4. 2025. Quantification of Global Dosimetry Audit Performance: Assessing the Sensitivity and Specificity of Dosimetry Audits to Establish Reciprocity Among Different International Clinical Trials Credentialing Organizations. Poster. 67th AAPM Annual Meeting & Exhibition. Washington, DC, US.
      5. 2015. Higher mean heart dose with brachytherapy-based accelerated partial breast irradiation. Conference. Holliday EB, Kirsner SM, Thames HD, Mason BE, Nelson CL, Bloom ES. San Antonio, TX, US.
      6. 2013. Approach to Ensure Quality and Uniform HDR Treatments in a Multi-Center Practice. Conference. Approach to Ensure Quality and Uniform HDR Treatments in a Multi-Center Practice. Breckenridge, CO, US.
      7. 2008. Use of implanted fiducials in lung tumors. Conference. Use of implanted fiducials in lung tumors. Frisco, CO, US.
      8. 2005. Assessment of lung tumor motion during respiratory gating using implanted fiducials. Conference. Assessment of lung tumor motion during respiratory gating using implanted fiducials. Denver, CO, US.

      International Presentations

      1. 2026. Standardization and Automation of Quality Assurance Utilizing a Commercial Platform. Poster. AAPM Comp Annual Meeting 2026. Houston, US.
      2. 2014. Commissioning Results of an Automated Treatment Planning and Delivery Verification System. Conference. Commissioning Results of an Automated Treatment Planning and Delivery Verification System. Vienna, AT.
      3. 2012. Chest Wall Reproducibility during Breath Hold Treatment for Left Sided Breast Cancers Measured using CINE Images. Conference. Chest Wall Reproducibility during Breath Hold Treatment for Left Sided Breast Cancers Measured using CINE Images. Sydney, AU.

      Formal Peers

      1. 2023. Harnessing DoseLab’s AutoQA for a Fully-automated QA Environment. Invited. Palo Alto, CA, US.
      2. 2022. 3D printing: our experiences in radiation oncology. Invited, US.
      3. 2021. Varian & Siemens Experience at MD Anderson Cancer Center. Invited. Palo Alto, CA, US.
      4. 2021. Standardization of Physics QA Across a multi-center practice: challenges and lessons learned. Invited, US.
      5. 2020. Automated QA Program in the MD Anderson Department of Radiation Physics. Invited, US.
      6. 2020. SGRT: A tool to improve patient safety in radiotherapy. Invited. London, GB.
      7. 2015. Imaging QA for Varian Linear Accelerators, a Physicists Perspective. Invited. Anaheim, CA, US.
      Read More
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      Grant & Contract Support

      Date: 2018 - 2020
      Title:Consensus contouring software with real-time feedback for radiation oncology training
      Funding Source:Department of Radiation Physics Internal Grant
      Role:PI
      Date: 2015
      Title:Travel grant for SWAAPM conference
      Funding Source:Mobius Medical Systems
      Role:Investigator
      Date: 2014
      Title:Travel Grant for ESTRO Conference
      Funding Source:Mobius Medical Systems
      Role:Investigator

      Selected Publications

      Peer-Reviewed Articles

      1. Brooks, FE, Lehmann, J, Hussein, M, Lye, J, Nelson, CL, Nakamura, M, Diez, P, Patel, R, Greer, P, Hirashima, H, Pollard-Larkin, JM, Howell, RM, Peterson, CB, Clark, CH, Kry, SF. A comparison of sensitivity and specificity of dosimetry audits for intensity modulated radiation therapy used internationally for clinical trial credentialing. Radiotherapy and Oncology 218:111407, 2026. e-Pub 2026. PMID: 41638318.
      2. Brooks, FE, Hussein, M, Lye, J, Nelson, CL, Mitsuhiro, N, Glenn, MC, Diez, P, Patel, R, Shaw, M, Patallo, IS, Barry, M, Clark, CH, Lehmann, J, Kry, SF. Developing reference plans for evaluating global clinical trials credentialing and PSQA systems. Journal of applied clinical medical physics 26(7):e70113, 2025. e-Pub 2025. PMID: 40439871.
      3. Kendall, RL, Robinson, T, Reed, VK, Kanke, JE, Sosa, A, Nelson, CL, Swanson, DM, Villa, MT, Bloom, ES. Why is Volumetric Modulated Arc Therapy Not Considered the Standard of Care for Locoregional Radiation Therapy for Breast Cancer Patients?. Advances in Radiation Oncology 10(5):101728, 2025. e-Pub 2025. PMID: 40264855.
      4. Fre'Etta E. Brooks, Mallory Carson Glenn, Victor Hernandez, Jordi Saez, Julianne M Pollard-Larkin, Christine B Peterson, Rebecca Maureen Howell, Christopher Lee Nelson, Catharine H. Clark, Stephen F Kry. Is the Imaging Radiation Oncology Core Head and Neck Credentialing Phantom an Effective Surrogate for Different Anatomic Sites?. Int J Radiat Oncol Biol Phys 121(3):811-821, 2025. e-Pub 2025. PMID: 39362313.
      5. Brooks FMD, Glenn MC, Hernandez V, Saez J, Mehrens H, Pollard-Larkin JM, Howell RM, Peterson CB, Nelson CL, Clark CH, Kry SF. A radiotherapy community data-driven approach to determine which complexity metrics best predict the impact of atypical TPS beam modeling on clinical dose calculation accuracy. J Appl Clin Med Phys 25(5):e14318, 2024. e-Pub 2024. PMID: 38427776.
      6. Nelson, CL, Nguyen, C, Fang, R, Court, LE, Cardenas, CE, Rhee, DJ, Netherton, T, Mumme, R, Gay, SS, Gay, C, Marquez, B, El Basha, MD, Zhao, Y, Gronberg, M, Hernandez, S, Nealon, KA, Martel, MK, Yang, J. A real-time contouring feedback tool for consensus-based contour training. Frontiers in Oncology 13, 2023. e-Pub 2023. PMID: 37771435.
      7. Gao S, Nelson C, Wang C, Kathriarachchi V, Choi M, Saxena R, Kendall R, Balter P. Quantification of the role of lead foil in flattening filter free beam reference dosimetry. J Appl Clin Med Phys 24(4):e13960, 2023. e-Pub 2023. PMID: 36913192.
      8. Augustyn A, Reed VI, Ahmad N, Bhutani MS, Bloom ES, Bowers JR, Chronowski GM, Das P, Holliday EB, Delclos ME, Huey RW, Koay EJ, Lee SS, Nelson CL, Taniguchi CM, Koong AC, Chun SG. Implementation of a stereotactic body radiotherapy program for unresectable pancreatic cancer in an integrated community academic radiation oncology satellite network. Clin Transl Radiat Oncol 27:147-151, 2021. e-Pub 2021. PMID: 33665384.
      9. Stecklein SR, Shaitelman SF, Babiera GV, Bedrosian I, Black DM, Ballo MT, Arzu I, Strom EA, Reed VK, Dvorak T, Smith BD, Woodward WA, Hoffman KE, Schlembach PJ, Kirsner SM, Nelson CL, Yang J, Guerra W, Dibaj S, Bloom ES. Prospective Comparison of Toxicity and Cosmetic Outcome After Accelerated Partial Breast Irradiation with Conformal External Beam Radiotherapy or Single-Entry Multilumen Intracavitary Brachytherapy. Pract Radiat Oncol 9(1):e4-e13, 2019. e-Pub 2019. PMID: 30125673.
      10. McCarroll RE, Beadle BM, Balter PA, Burger H, Cardenas CE, Dalvie S, Followill DS, Kisling KD, Mejia M, Naidoo K, Nelson CL, Peterson CB, Vorster K, Wetter J, Zhang L, Court LE, Yang J. Retrospective Validation and Clinical Implementation of Automated Contouring of Organs at Risk in the Head and Neck: A Step Toward Automated Radiation Treatment Planning for Low- and Middle-Income Countries. J Glob Oncol 4:1-11, 2018. e-Pub 2018. PMID: 30110221.
      11. Court LE, Kisling K, McCarroll R, Zhang L, Yang J, Simonds H, du Toit M, Trauernicht C, Burger H, Parkes J, Mejia M, Bojador M, Balter P, Branco D, Steinmann A, Baltz G, Gay S, Anderson B, Cardenas C, Jhingran A, Shaitelman S, Bogler O, Schmeller K, Followill D, Howell R, Nelson C, Peterson C, Beadle B. Radiation Planning Assistant - A Streamlined, Fully Automated Radiotherapy Treatment Planning System. J Vis Exp(134):57411, 2018. e-Pub 2018. PMID: 29708544.
      12. Holliday EB, Kirsner SM, Thames HD, Mason BE, Nelson CL, Bloom ES. Lower mean heart dose with deep inspiration breath hold-whole breast irradiation compared with brachytherapy-based accelerated partial breast irradiation for women with left-sided tumors. Pract Radiat Oncol 7(2):80-85, 2017. e-Pub 2017. PMID: 28274398.
      13. Robinson RC, Nelson CL, Bloom ES, Kisling KD, Mason BE, Fisher GD, Kirsner SM. Contralateral breast dose from partial breast brachytherapy. J Appl Clin Med Phys 16(6):17-22, 2015. e-Pub 2015. PMID: 26699549.
      14. Nelson CL, Mason BE, Robinson RC, Kisling KD, Kirsner SM. Commissioning results of an automated treatment planning verification system. J Appl Clin Med Phys 15(5):57-65, 2014. e-Pub 2014. PMID: 25207567.
      15. Gifford KA, Pacha O, Herbert AA, Kirsner SM, Nelson CL, Ballow MB, Bloom ES. A new paradigm for calculating skin dose. Brachytherapy 12(2):114-9, 2013. e-Pub 2013. PMID: 22884255.
      16. Gifford KA, Nelson CL, Kirsner SM, Kisling KD, Ballo MT, Bloom ES. On the Feasibility of treating to 1.5 cm PTV with a commercial single-entry hybrid applicator in APBI Breast Brachytherapy. J Contemp Brachytherapy 4(1):29-33, 2012. e-Pub 2012. PMID: 23346137.
      17. Bloom ES, Kirsner S, Mason BE, Nelson CL, Hunt KK, Baumann DP, Gifford KA. Accelerated partial breast irradiation using the strut-adjusted volume implant single-entry hybrid catheter in brachytherapy for breast cancer in the setting of breast augmentation. Brachytherapy 10(3):178-83, 2011. e-Pub 2011. PMID: 20719576.
      18. Nelson C, Balter P, Morice R, Bucci K, Dong L, Tucker S, Vedam S, Chang J, Starkschall G. Evaluation of tumor position and PTV margins using image-guidance and respiratory gating. Int J Radiat Oncol Biol Phys 76(5):1578-85, 2010. e-Pub 2010. PMID: 20137865.
      19. Nelson, CL, Kirsner SM, Gifford KA. SU‐FF‐T‐68: On the Dosimetric Differences Between Single Dwell and Multiple‐Dwell Accelerated Partial Breast Brachytherapy Plans Delivered with a Single Catheter Spherical Balloon. Med Phys 36(6,Part 9):2535, 2009. e-Pub 2009.
      20. Briere TM, Beddar S, Balter P, Murthy R, Gupta S, Nelson C, Starkschall G, Gillin MT, Krishnan S. Respiratory gating with EPID-based verification: the MDACC experience. Phys Med Biol 54(11):3379-91, 2009. e-Pub 2009. PMID: 19436104.
      21. Nelson C, Balter P, Morice R, Choi B, Kudchadker R, Bucci K, Chang J, Dong L, Tucker S, Vedam S, Briere T, Starkschall G. A technique for reducing patient setup uncertanties by aligning and verifying daily position of a moving tumor using implanted fudicials. J Appl Clin Med Phys 9(4):110-22, 2008. e-Pub 2008. PMID: 19020478.
      22. Britton K, Starkschall G, Tucker S, Pan T, Nelson C, Chang J, Cox J, Mohan R, Komaki R. Assessment of gross tumor volume regression and motion changes during radiotherapy for non-small-cell lung cancer as measured by four-dimensional computed tomography. Int J Radiat Oncol Biol Phys 68(4):1036-46, 2007. e-Pub 2007. PMID: 17379442.
      23. Nelson C, Starkschall G, Balter P, Morice RC, Stevens CW, Chang JY. Assessment of lung tumor motion and setup uncertanties using implanted fiducials. Int J Radiat Oncol Biol Phys 67(3):915-23, 2007. e-Pub 2007. PMID: 17293241.
      24. Nelson C, Starkschall G, Chang JY. The potential for dose escalation in lung cancer as a result of systematically reducing margins used to generate planning target volume. Int J Radiat Oncol Biol Phys 65(2):573-86, 2006. e-Pub 2006. PMID: 16690439.
      25. Cody DD, Nelson CL, Bradley WM, Wislez M, Juroske D, Price RE, Zhou X, Bekele BN, Kurie JM. Murine lung tumor measurement using respiratory-gated micro-computer tomography. Invest Radiol 40(5):263-9, 2005. e-Pub 2005. PMID: 15829823.
      26. Nelson C, Starkschall G, Balter P, Fitzpatrick MJ, Antolak JA, Tolani N, Prado K. Respiration-correlated treatment delivery using feedback-guided breath hold: a technical study. Med Phys 32(1):175-81, 2005. e-Pub 2005. PMID: 15719968.
      27. Fitzpatrick MJ, Starkschall G, Balter P, Antola JA, Guerrero T, Nelson C, Keall P, Mohan R. A novel platform simulating irregular motion to enhance assessment of respiration-correlated raditation therapy procedures. J Appl Clin Med Phys 6(1):13-21, 2005. e-Pub 2005. PMID: 15770194.
      28. Granger, BK, Nelson, CL, Kathriarachchi, VW, Hernandez, S. Automated Analysis Tool for Annual Beam-Scanning QA.

      Review Articles

      1. Pollard-Larkin JM, Briere TM, Kudchadker RJ, Sadagopan R, Nitsch PL, Wang XA, Salehpour M, Wang J, Vedam S, Nelson CL, Sahoo N, Zhu XR, Court LE, Balter PA, Robinson IJ, Yang J, Howell RM, Followill DS, Kry S, Beddar SA, Martel MK. Our Experience Leading a Large Medical Physics Practice During the COVID-19 Pandemic. Adv Radiat Oncol 6(4):100683, 2021. e-Pub 2021. PMID: 33824935.

      Abstracts

      1. Nelson CL, Olivares M, Dabaja B, Nguyen K, Balter P. A Robust Radiotherapy Continuity System that Enables Patient Treatments during a Cybersecurity Event. ASTRO's 67 Annual Meeting, 2025. e-Pub 2025.
      2. Nelson C, Nguyen C, Amirmazaheri M, Court L, Martel M, Cardenas C, Yang J. SU-K-302-04 Implementation of a real-time contouring feedback tool to reduce contouring variability. Med Phys 46(6):e178, 2019. e-Pub 2019.
      3. McCarrol R, Beadle B, Yang J, Zhang L, Meija M, Kisling K, Balter P, Stingo F, Nelson C, Followill D, Court L. TU-H-CAMPUS-JeP1-02: Fully Automatic Verification of Automatically Contoured Normal Tissues in the Head and Neck. Med Phys 43(6):3778, 2016. e-Pub 2016.
      4. Nelson C, Garcia M, Calderon E, Kirsner S. SU‐F‐T‐306: Validation of Mobius 3D and FX for Elekta Linear Accelerators. Med Phys 43(6,Part17):3533, 2016. e-Pub 2016.
      5. Nelson C, Garcia M, Mason B, Kirsner S. SU-F-T-487: On-Site Beam Matching of An Elekta Infinity with Agility MLC with An Elekta Versa HD. Med Phys 43(6,Part20):3575, 2016. e-Pub 2016.
      6. Holliday EB, Kirsner SM, Thames HD, Mason BE, Nelson CL, Bloom ES. Higher mean heart dose with brachytherapy-based accelerated partial breast irradiation. Int J Radiat Oncol Biol Phys 93(3):S60-S61, 2015. e-Pub 2015.
      7. Kisling K, Court L, Kirsner S, Nelson C. SU‐E‐T‐276: Dose calculation accuracy with a standard beam model for extended SSD treatments. Med Phys 42(6,Part16):3396, 2015. e-Pub 2015.
      8. Nelson C, Ohrt J, Mason B, Kirsner S. SU-E-T-392: Evaluation of Ion Chamber/Film and Log File Based QA to Detect Delivery Errors. Med Phys 42(6,Part18):3424, 2015. e-Pub 2015.
      9. Kisling K, Nelson C, Chronowski G, Mason B, Kirsner S. Evaluation of a System for Independent Treatment Plan and Delivery Verification. Int J Radiat Oncol Biol Phys 90(1):S736, 2014. e-Pub 2014.
      10. Robinson R, Nelson C, Kisling K, Fisher G, Kirsner S. APBI Contralateral Breast Dose. Med Phys 16(6):17, 2013. e-Pub 2013.
      11. Nelson C, Davidson S, Mason B, Kirsner S. Commissioning of a Commercial Treatment Planning System Verification Software Package. Med Phys 40(6,Part 14):263-4, 2013. e-Pub 2013.
      12. Gifford K, Pacha O, Herbert A, Nelson C, Kirsner S, Bloom E. Skin sequelae from APBI brachytherapy treatment, incidence, and mitigation strategies, 2012. e-Pub 2012.
      13. Nelson C, Gifford K, Balter P, Kisling K, Kirsner S. A Technique for Treating Patients Outside the Mosaiq R&V System for TrueBeam Users (or 4DTC). Med Phys 39(6,Part 13):3752-3, 2012. e-Pub 2012. PMID: 28517332.
      14. Nelson C, Gifford K, Kisling K, Bloom E, Kirsner S. An Automated Quality Assurance Tool for HDR Treatment Planning. Med Phys 39(6,Part 12):3745, 2012. e-Pub 2012. PMID: 28517816.
      15. Bloom ES, Gifford K, Kirsner S, Nelson C, Mason B, Munsell M, Bejarano M, Hoover S, Hunt K, Bedrosian I, Babiera G. The importance of Multidisciplinary Collaboration Between Surgeon and Radiation Oncologist for Optimal Choice and Placement of Single-entry Brachytherapy Catheters for Accelerated Partial Breast irradiation. Ann Surg Oncol 19, 2012. e-Pub 2012.
      16. Bloom E, Whitsell T, Kirsner S, Nelson C, Mason B, Ballo M, Gifford K. Can PTV_EVAL be used as surrogate for normal breast tissue in the determination of V150 and V200. Radiotherapy and Oncology 103(2S):S50, 2012. e-Pub 2012.
      17. Nelson C, Gifford K, Shah S, Kirsner S, Bloom E, Arzu I. Chest Wall Reproducibility during Breath Hold Treatment for Left Sided Breast Cancers Measured using CINE Images, 2012. e-Pub 2012.
      18. Nelson C, Gifford K, Kirsner S, Shah S, Bloom E, Mason B, Arzu I. SU‐E‐J‐144: Analysis of Intra-Fraction Chest Wall Motion During Breath Hold Treatment for Left Sided Breast Cancer. Med Phys 38(6,Part 9):3476, 2011. e-Pub 2011.
      19. Gifford K, Hunter L, Ballo M, Kirsner S, Mason B, Nelson C. Verification of the Accuracy of a Commercial Pre-Treatment IMRT QA Software. Med Phys 38(6,Part 17):3586, 2011. e-Pub 2011.
      20. Gifford KA, Nelson CL, Kirsner SM, Bloom ES. On the Feasibility of Treating to a 1.5 cm PTV for Accelerated Partial Breast Brachytherapy With a Commercial Single Entry Hybrid Applicator. Brachytherapy 10(Suppl 1):S43, 2011. e-Pub 2011.
      21. Gifford KA, Bloom ES, Kirsner SM, Nelson CL, Mason BE, Hebert AA. Estimation and Application of a Consensus Breast Epidermal Thickness for Radiation Treatment Planning, 2011. e-Pub 2011.
      22. Pollard JM, Kirsner SM, Mason BE, Nelson CL, Bloom ES, Gifford KA. Evaluation of Two Brachytherapy Planning Methods for Accelerated Partial Breast Irradiation using MammoSite. Int J Radiat Oncol Biol Phys 78(3,Suppl):S840, 2010. e-Pub 2010.
      23. Choi B, Nelson C, Tsunashima Y, Balter P. Open Source, ImageJ Based, web accessible tool for treatment plan evaluation. Med Phys 34(6):2477, 2007. e-Pub 2007.
      24. Briere T, Krishnan S, Dong L, Balter P, Nelson C, Starkschall G, Beddar S. Tumor motion and the effect of gated set-up on the treatment of liver tumors. Med Phys 34(6,Part 6):2391, 2007. e-Pub 2007.
      25. Nelson C, Balter P, Lindsay P, Briere T, Vedam S, Morice R, Komaki R, Starkschall G. Uncertainties in respiratory gating for lung tumors. Med Phys 34(6,Part 4):2368, 2007. e-Pub 2007.
      26. Britton K, Starkschall G, Liu H, Nelson C, Chang J, Kantor M, Cox J, Komaki R, Mohan R. Impact of anatomical changes on dose distributions during three-dimensional radiotherapy (3D-CRT) of lung cancer: preliminary study using multiple 4-DCT. Med Phys 34(6,Part 6):2392, 2007. e-Pub 2007.
      27. Nelson C, Balter P, Choi B, Vedam S, Lindsay P, Kudchadker R, Briere T, Chang J, Morice R, Starkschall G. Improvement in the daily alignment of mobile lung tumors using implanted fiducials. Med Phys 34(6,Part 1):2328, 2007. e-Pub 2007.
      28. Balter P, Lindsay P, Kudchadker R, Nelson C, Briere T, Vedam S, Komaki R, Mohan R. A comparison of a point based tool with an image overlay tool for fiducial based setup. Med Phys 34(6,Part 5):2372, 2007. e-Pub 2007.
      29. Nelson C, Starkschall G, Morice RC, Stevens CW, Britton K, Chag JY. Estimation of lung tumor setup uncertainties using bony landmarks and implanted fiducials. Med Phys 33(6,Part 5):2033, 2006. e-Pub 2006.
      30. Bivens W, Starkschall G, Nelson C. Metrics for assessment of reproducibility of respiratory motion for four-dimensional computed tomography imaging. Med Phys 33(6):2042, 2006. e-Pub 2006.
      31. Britton K, Starkschall G, Nelson C, Komaki R, Mohan R. The effects of radiation treatment on respiration-induced lung tumor motion. Med Phys 33(6,Part 16):2188, 2006. e-Pub 2006.
      32. Starkschall G, Nelson C, Morice R, Stevens C, Chang J. Use of portal imaging and implanted fiducials to assess respiratory motion in gated radiotherapy, 2006. e-Pub 2006.
      33. Morice RC, Keus L, Jimenez CA, Eapen GA, Nelson C, Stevens CW, Starkschall G. Bronchoscopic implantantion of gold fiducials for estimating lung tumor motion during gated radiation therapy. Chest 128(4,Suppl):163S, 2005. e-Pub 2005.
      34. Nelson C, Stevens CW, Morice RC, Starkschall. Assessment of lung tumor motion during respiratory gating using implanted fudicials. Int J Radiat Oncol Biol Phy 63(Suppl 1):S203, 2005. e-Pub 2005.
      35. Nelson C, Starkschall G, Chang JY. Dose escalation resulting from reduced margins used to generate the planning target volume. Int J Radiat Oncol Biol Phy 32(6,Part 6):1946, 2005. e-Pub 2005.
      36. Tolani N, Nelson C, Balter P, Hunjan S, Fitzpatrick MJ, Antolak JA, Starkschall G, Prado K. Respiratory trace characterization: a precursor to feedback-guided breath hold treatment delivery. Int J Radiat Oncol Biol Phys 60(1,Suppl):S608, 2004. e-Pub 2004.

      Book Chapters

      1. Nelson CL, Kirsner SM, Saglam Y, Alpan V. Quality Assurance of Modern Radiotherapy techniques in thoracic malignancies. In: Principles and Practice of Radiotherapy Techniques in Thoracic Malignancies. Springer International Publishing, 507-517, 2016.
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