William "Neil" N. Duggar, DABR, PhD
Associate Professor
Department:
SOM-Radiation/Oncology
Email:
wduggar@umc.edu
Work Phone:
(601) 815-6246
Biography
Born in MS, I have developed a relationship with the people and the state over my whole life. Though I have not always lived in MS, I have a great desire to see it grow and for the lives of Mississippians to become better. I love being a member of the Radiation Oncology team as we come into people's lives at such a critical moment for them and their families. I am happy to be behind the scenes as a physicist. Confidence that our treatment of the patients is the best and only reward that I am seeking.
Education
| Trident University International, PhD, Clinical Health Sciences | 2019 |
| University of MS Medical Center, No Degree, Required for Certification, Therapeutic Medical Physics | 2013 |
| Georgia Institute of Technology, MS, Medical Physics | 2010 |
| Mississippi College, BS, Physics | 2009 |
Specialty Certification Licensure
| Certification, Diplomate, American Board of Radiology, American Board of Radiology | 05/2015 - Present |
Current Positions
| Lead Clinical Physicist, School of Medicine, Department of Radiation / Oncology | 06/2019 - Present |
| Assistant Professor, School of Medicine, Department of Radiation / Oncology | 02/2016 - Present |
| The University of Mississippi Medical Center Jackson, Mississippi 39216 | |
Academic Appointments or Other Previous Appointments
| Instructor, University of MS Medical Center, School of Medicine, Department of Radiation / Oncology | 11/2013 - 02/2016 |
Publications
Dataset | |
| Wang, Y., Duggar, W.N., Caballero, D.M., Vengaloor Thomas, T., Adari, N., Mundra, E.K., Wang, H. Brain Tumor Recurrence Prediction after Gamma Knife Radiotherapy from MRI and Related DICOM-RT: An Open Annotated Dataset and Baseline Algorithm (Brain-TR-GammaKnife) The Cancer Imaging Archive | 2023 |
Journal Article | |
| Kanakamedala MR, Duggar N, Giri SP Stereotactic body radiation therapy in lung Stereotactic body radiation therapy in lung. Kanakamedala MR, Duggar N, Giri SP. Transl Cancer Res 2015;4(4):435-448. doi: 10.3978/j.issn.2218-676X.2015.08.11 | 2015 |
| Vijayakumar S, Nittala MR, Duggar WN, King M, T Lirette S, Yang CC, Mundra E, Woods WC, Otts J, Doherty M, Panter P, Howard C, Ridgway M, Allbright R, The Influence of Patient and System Factors on the Radiotherapy Treatment Time in the Treatment of Non-metastatic Cervical Cancer Patients in a Rural and Resource-Lean State's Safety-Net Hospital: Benefits of Strategic Planning. Cureus, 2023 Mar;15(3):e35954 | 2023 |
| Vijayakumar S, Nittala MR, Buddala V, Mobit P, Duggar WN, Yang CC, Lirette ST, Mundra E, Ahmed HZ, Berry SM, Craft BS, Woods WC, Otts J, Rahimi A, Dobbs T, Real World and Public Health Perspectives of Intraoperative Radiotherapy in Early-Stage Breast Cancer: A Multidisciplinary Analysis Beyond the Statistical Facts. Cureus, 2023 Mar;15(3):e36432 | 2023 |
| Duggar WN, Vengaloor Thomas T, Wang Y, Rahman A, Wang H, Roberts PR, Bian L, Gatewood RT, Vijayakumar S, Preoperative Prediction and Identification of Extracapsular Extension in Head and Neck Cancer Patients: Progress and Potential. Cureus, 2023 Feb;15(2):e34769 | 2023 |
| Vijayakumar S, Lancaster FB, Nittala MR, Duggar WN, The Emerging Boon of Information and Communication Technology in Multidisciplinary Cancer Care: A Force Multiplier With a Human Touch. Cureus, 2023 Jan;15(1):e33665 | 2023 |
| Duggar WN, Roberts PR, Thomas TV, Dulaney C, Building Better Patient Care in Mississippi Radiation Oncology: Why Mississippi Needs a Collaborative Quality Initiative. Southern medical journal, 2023 May;116(5):415-418 | 2023 |
| Duggar WN, Morris B, He R, Yang C, Total workflow uncertainty of frameless radiosurgery with the Gamma Knife Icon cone-beam computed tomography. Journal of applied clinical medical physics, 2022 May;23(5):e13564 | 2022 |
| Duggar WN, Morris B, He R, Yang CC, Ramifications of Setup Margin Use During Frameless Stereotactic Radiosurgery/Therapy With Gamma Knife Icon Cone-Beam Computed Tomography (CBCT): A Dosimetric Study. Cureus, 2022 Feb;14(2):e21996 | 2022 |
| Duggar WN, Morris B, He R, Yang CC, Predictors of Significant Patient Movement During Frameless Radiosurgery with the Gamma Knife® Icon™ Cone-Beam CT. Cureus, 2022 Jan;14(1):e21380 | 2022 |
| Vijayakumar S, Yang J, Nittala MR, Velazquez AE, Huddleston BL, Rugnath NA, Adari N, Yajurvedi AK, Komanduri A, Yang CC, Duggar WN, Berlin WP, Duszak R, Vijayakumar V, Changing Role of PET/CT in Cancer Care With a Focus on Radiotherapy. Cureus, 2022 Dec;14(12):e32840 | 2022 |
| Yibin Wang, W. Neil Duggar, Toms V. Thomas, P. Russell Roberts, Linkan Bian, Haifeng Wang Extracapsular extension identification for head and neck cancer using multi-scale 3D deep neural network BCB ‘21: Proceedings of the 12th ACM Conference on Bioinformatics, Computational Biology, and Health Informatics. 2021 August 52, 1-5 | 2021 |
| Nittala MR, Duggar WN, Mundra E, Packianathan S, Smith ML, Woods WC, Otts J, Bhandari R, Allbright R, De Delva PE, Moremen JR, Yang CC, Vijayakumar S, Single Institution Experience of Stereotactic Body Radiation Therapy in Non-small Cell Lung Cancer: Comparison of Two Dose Regimes and a Perspective on Ideal Dose Regimens. Cureus, 2021 Oct;13(10):e18862 | 2021 |
| Ahmed HZ, Vijayakumar S, Duggar WN, Allbright R, MRI-Directed Brachytherapy for Cancer of the Uterine Cervix: A Case Report, Review, and Perspective on the Importance of Widespread Use of This Technological Advance in the United States. Cureus, 2021 Jun 7;13(6):e15495 | 2021 |
| Yibin Wang, Christian Zamiela, Toms V. Thomas, William N. Duggar, P. Russell Roberts, Linkan Bian, Haifeng Wang 3D Texture Feature-Based Lymph Node Automated Detection in Head and Neck Cancer Analysis 2020 IEEE International Conference on Bioinformatics and Biomedicine (BIBM), Seoul, Korea (South), 2020, pp. 2113-2119, doi: 10.1109/BIBM49941.2020.9313482. | 2020 |
| Rui He, Neil Duggar, Elgenaid Hamadain, Hamed Benghuzzi, Claus Chunli Yang Comparisons of Imaging Dose among Different Imaging Modalities | 2019 |
| Fatemi A, Kanakamedala M R, Yang C, Morris B, Duggar W N, Vijayakumar S Evaluation of the Geometric and Dosimetric Accuracy of Synthetic Computed Tomography Images for Magnetic Resonance Imaging-only Stereotactic Radiosurgery | 2019 |
| Duggar WN, Morris B, Fatemi A, Bonds J, He R, Kanakamedala M, Rey-Dios R, Vijayakumar S, Yang C, Gamma Knife(®) icon CBCT offers improved localization workflow for frame-based treatment. Journal of applied clinical medical physics, 2019 Nov;20(11):95-103 | 2019 |
| Fatemi A, Kanakamedala MR, Yang CC, Morris B, Duggar WN, Vijayakumar S, Evaluation of the Geometric and Dosimetric Accuracy of Synthetic Computed Tomography Images for Magnetic Resonance Imaging-only Stereotactic Radiosurgery. Cureus, 2019 Apr 8;11(4):e4404 | 2019 |
| Ali Fatemi, Somayeh Taghizadeh, Claus Chunli Yang, Madhava Kanakamedala, Srinivasan Vijayakumar, Roberto Rey-Dios, Bart Morris, William N Duggar, Edward Florez Machine-specific MRI quality control procedures for stereotactic radiosurgery treatment planning | 2018 |
| Albert AA, Duggar WN, Bhandari RP, Vengaloor Thomas T, Packianathan S, Allbright RM, Kanakamedala MR, Mehta D, Yang CC, Vijayakumar S, Analysis of a real time group consensus peer review process in radiation oncology: an evaluation of effectiveness and feasibility. Radiation oncology (London, England), 2018 Dec 3;13(1):239 | 2018 |
| Duggar WN, Bhandari R, Yang CC, Vijayakumar S, Group consensus peer review in radiation oncology: commitment to quality. Radiation oncology (London, England), 2018 Mar 27;13(1):55 | 2018 |
| Bhandari RP, Duggar WN, Yang C, Kanakamedala MR, Packianathan S, Giri SP, Mangana SH, Allbright RM, Vijayakumar S, A Sustainable Model for Peer Review and Utility of At-a-Glance Analysis of Dose Volume Histogram in Radiation Oncology. Journal of the American College of Radiology : JACR, 2018 Feb;15(2):310-312 | 2018 |
| Fatemi A, Taghizadeh S, Yang CC, R Kanakamedala M, Morris B, Vijayakumar S, Machine-Specific Magnetic Resonance Imaging Quality Control Procedures for Stereotactic Radiosurgery Treatment Planning. Cureus, 2017 Dec 18;9(12):e1957 | 2017 |
| M Kanakamedala, MD, S P Giri, MD; W N Duggar; S Vijayakumar, MD Comparison of Auto-segmented PET Volumes in Lung Tumors with CT Based Manual Contours: Implications in Radiotherapy Planning Journal of Thoracic Oncology, 8, S1132-S1132 | 2013 |
| Vijayakumar S, Duggar WN, Packianathan S, Morris B, Yang CC, Chasing Zero Harm in Radiation Oncology: Using Pre-treatment Peer Review. Frontiers in oncology, 2019;9:302 | |
| Bhandari RP, Stanford JD, Packianathan S, Duggar WN, Kanakamedala MR, Zhang X, Giri SP, Kumar PP, Harrell LM, Mangana SH, Yang C, Vijayakumar S, Stereotactic Body Radiation Therapy for Stage I Non-Small Cell Lung Cancer: A Retrospective, Single-Center Study of 55 Patients. Oncology, 2016;91(4):194-204 | |
| Duggar WN, Nguyen A, Stanford J, Morris B, Yang CC, Modeling treatment couches in the Pinnacle treatment planning system: Especially important for arc therapy. Medical dosimetry : official journal of the American Association of Medical Dosimetrists, 2016 Spring;41(1):34-41 | |
| Duggar WN, He R, Bhandari R, Kanakamedala M, Morris B, Rey-Dios R, Vijayakumar S, Yang CC, Considering inhomogeneities in Gamma Knife treatment planning: Factors affecting the loss of prescription dose coverage(†). Journal of radiosurgery and SBRT, 2020;6(4):303-310 | |
| Taghizadeh S, Labuda C, Yang CC, Morris B, Kanakamedala MR, Vijayakumar S, Rey-Dios R, Duggar WN, Florez E, Fatemi A, Optimizing MRI sequences and images for MRI-based stereotactic radiosurgery treatment planning. Reports of practical oncology and radiotherapy : journal of Greatpoland Cancer Center in Poznan and Polish Society of Radiation Oncology, 2019 Jan-Feb;24(1):12-19 | |
| Duggar WN, Weatherall L, Nittala MR, Thomas TV, Mundra EK, Otts J, Woods WC, Yang C, Vijayakumar S, Strategic Reduction of Package Time in Head and Neck Cancer. Advances in radiation oncology, 2023 Jan-Feb;8(1):101117 | |
Dissertation | |
| Optimal Margin Application for Image-Guided, Frameless Gamma Knife Radiosurgery: A Correlational Analysis of This New Treatment Technique and Patient Specific Factors | 2019 |
Presentations
| Invited Symposia, Improving Patient Outcomes with SmartClinic: The importance and the use of ICT – Information Communication Technology – in Cancer Care Practice, Elekta Mosaiq Plaza Roadshow, Philadelphia, PN | 03/2022 |
| Invited Symposia, Crucial Factors for Radiation Oncology Workflow Improvement, Americas RayStation Hybrid User Meeting, Miami, FL | 12/2021 |
| Poster Presentation, Automatic Extracapsular Extension Identification in Head and Neck Cancer Using Deep Neural Network with Local-Global Information, ASTRO 2021 Annual Meeting, Virtual | 10/2021 |
| Poster Presentation, Interpretable Artificial Intelligence-Based Extracapsular Extension Prediction in Head and Neck Cancer Analysis, AAPM 2021 Annual Meeting, Virtual | 07/2021 |
| Poster Presentation, Volumetric Axillary Boost (VMAB): Novel Planning for Nodal Coverage in Breast/Chestwall Patients, AAPM 2021 Annual Meeting, Virtual | 07/2021 |
| Poster Presentation, An Innovative Modification of a Commercial Mask Used in Gamma Knife Icon Stereotactic Radiosurgery, AAPM 2021 Annual Meeting | 07/2021 |
| Invited Symposia, Emerging Therapies in Radiation From a Medical Physics Perspective, 46th Annual ONS Congress: Catalyst for Innovative Care, Virtual | 04/2021 |
| Poster Presentation, Abstract PO-039: Artificial intelligence-based extracapsular extension prediction in head and neck cancer analysis., AACR Virtual Special Conference on Artificial Intelligence | 01/2021 |
| Invited Symposia, Post axillary boost in 2020 – Why settle for suboptimal coverage?, 9th Annual Raystation User Meeting, Virtual | 12/2020 |
| Poster Presentation, Dosimetric Evaluation of SBRT and IMRT for Reirradiation of Recurring Head and Neck Cancer, ASTRO Annual Meeting 2020 | 10/2020 |
| ePoster Presentation, Prediction of Movement Uncertainty in Frameless Gamma Knife Icon Patients, AAPM Annual Meeting | 07/2019 |
| Short Oral, Exploration of Setup Margin in Frameless Gamma Knife Radiosurgery with the Icon, AAPM Annual Meeting, San Antonio, TX | 07/2019 |
| Short Oral, Total System Uncertainty of Frameless Gamma Knife Icon Treatment: Still Sub Millimeter?, AAPM Annual Meeting, San Antonio, TX | 07/2019 |
| Short Oral, Comparisons of Imaging Dose among Different Imaging Modalities, SBEC | 03/2019 |
| Poster Presentation, Group Consensus Peer Review: A Fertile Environment for Practical Radiation Oncology and Medical Physics Resident Education, AAPM, Nashville, TN | 07/2018 |
| ePoster Presentation, Localization Methods of the Gamma Knife Icon and Effects of the Image Scan Parameters, AAPM, Nashville, TN | 07/2018 |
| ePoster Presentation, Geometric Analysis of Target Volume Definition Using Corrected MRI Images and Analysis of Their Use for Stereotactic Radiosurgery Treatment Planning, AAPM Annual Meeting | 07/2018 |
| ePoster Presentation, MR to CBCT Registration Accuracy for IGRT on the Gamma Knife Icon, AAPM, Nashville, TN | 07/2018 |
| ePoster Presentation, Efficacy of Two Types of 2-D Array Detector System for Quick Beam Profile Measurements, AAPM Annual Meeting, Nashville, TN | 07/2018 |
| ePoster Presentation, Clinical Significance of Inhomogeneities in Stereotactic Radiosurgery Treatment Planning Using Synthetic CT Images, AAPM Annual Meeting, Nashville TN | 07/2018 |
| Short Oral, A PARADIGM SHIFT: CBCT OFFERS IMPROVED LOCALIZATION FOR FRAME-BASED GAMMA KNIFE TREATMENT, LGKS Annual Meeting, Dubai | 03/2018 |
| Short Oral, CLINICAL SIGNIFICANCE OF INHOMOGENEITIES IN GAMMA KNIFE TREATMENT PLANNING: FACTORS AFFECTING THE LOSS OF TARGET PRESCRIPTION DOSE COVERAGE, LGKS Annual Meeting, Dubai | 03/2018 |
| Poster Presentation, A Phantom Study of Accuracy of Four-Dimensional Cone-Beam CT (4D-CBCT) Vs. Three-Dimensional Cone Beam CT (3D-CBCT) in Image Guided Radiotherapy, AAPM Annual Meeting | 07/2016 |
| Short Oral, Study of interplay effect between multi-leaf collimator movement and target motion on a moving lung phantom in radiation therapy, International Association for the Study of Lung Cancer, Denver, Colorado | 09/2015 |
| Poster Presentation, Prognosticating Outcomes And Dose Painting In Lung Cancer Using FDG-PET In The Era Of 4-D Computerized Tomography Based Radiotherapy Treatment Planning, World Molecular Imaging Conference, Honolulu, Hawaii | 09/2015 |
| Poster Presentation, IGRT Gently: Evaluating Imaging Dose in Phantoms of Different Sizes, American Association of Physicists in Medicine, Anaheim, CA | 07/2015 |
| Poster Presentation, A Comparative Analysis of MIM and Pinnacle Software for Adaptive Planning, American Association of Physicists in Medicine, Anaheim, CA | 07/2015 |
| Poster Presentation, An Efficient Method to Quantitatively Detect Sub-Millimeter MLC Bank Alignment Errors Using a Well-Known QA Device, American Association of Physicists in Medicine, Anaheim, CA | 07/2015 |
| Poster Presentation, Improving Multiple Isocenter Coincidence: Elekta Beam Modulator with HexaPOD Six Degrees Couchtop, American Association of Physicists in Medicine, Austin, TX | 07/2014 |
| Poster Presentation, A Feasibility Study of Patient Specific QA Using Gafchromic Film of Dynamic Feathering in Junctions of Craniospinal Irradiation, American Association of Physicists in Medicine, Austin, TX | 07/2014 |
| Poster Presentation, A Feasibility Study On Clinical Implementation of 4D-CBCT in Lung Cancer Treatment, American Association of Physicists in Medicine, Austin, TX | 07/2014 |
| Short Oral, Comparison of Auto-segmented PET Volumes in Lung Tumors with CT Based Manual Contours: Implications in Radiotherapy Planning, Radiological Society of North America, Chicago, IL | 12/2013 |
| Poster Presentation, Significant Improvement in Agreement Between Calculated and Measured Dose Distributions: Proper Modeling of Elekta LINAC Couchtops in Pinnacle Treatment Planning System, American Association of Physicists in Medicine, Indianapolis, IN | 08/2013 |
| Poster Presentation, Phantom 3D Dose Calculation and Anatomy Based DVH Evaluation On VMAT Patient QA Using the Newest Version of Delta4 Dosimetry System, American Association of Physicists in Medicine, Indianapolis, IN | 08/2013 |
| Poster Presentation, Feasibility Study on Use of Gafchromic EBT2 Film as an Absolute Dosimetry QA System for SBRT Treatment, American Association of Physicists in Medicine, Charlotte, NC | 07/2012 |
Honors, Awards, and Recognition
| "Next Generation of Gamma Knife Researchers" - Top Scoring Abstracts, Leksell Gamma Knife Society | 2017 |
| Faculty of the Year, UMMC Radiation Oncology | 2015 |
| Student Government Outstanding Service Award, Mississippi College | 2009 |
| Perry Academic Award, Physics, Mississippi College | 2009 |
| Scott Swor Founder's Award, Mississippi College | 2009 |
| Hall of Fame, Mississippi College | 2009 |
Professional Membership and Service
| American Association of Physicists in Medicine, Member | |
| American Society of Therapeutic Radiation Oncology, Associate Member |
Committee Service
| Medical Physics Leadership Academy Case Reports Sub-Committee, Member | 2023 - Present |
| Radiation Oncology Clinical Competency Committee, Member | |
| Radiation Oncology Dept. PDSA Committee, Member |
Community Service
| Deacon at Trace Ridge Baptist Church | 2019 - 12/2022 |
| Worship Committee Chair-Elect at Trace Ridge Baptist Church, Chair-Elect Member | 2016 - 12/2018 |
| Administrative Committee at Trace Ridge Baptist Church, Member-2013 and 2015, Chair-2014 | 2013 - 12/2015 |
| Youth Ministry Worker, Volunteer for Youth Ministry at Trace Ridge Baptist Church | 06/2011 - 03/2020 |
| Sunday School Teacher, Teacher for 5th-6th grade class at Trace Ridge Baptist Church | 06/2011 - 08/2016 |
Other Service
| Article Review for JACMP, Reviewer | |
| Article Review for journal, Medical Dosimetry, Reviewer |
Teaching Experience
| Medicine, Course, Lecturer, Radiation Oncology Physics Course | Fall 2022 |
| Medicine, Course, Lecturer, Radiation Oncology Physics Course | Fall 2021 |
| Medicine, Course, Lecturer, Radiation Oncology Physics Course | Fall 2020 |
| Medicine, Course, Lecturer, Radiation Oncology Physics Course | Fall 2019 |
| Medicine, Course, Lecturer, Radiation Oncology Physics Course | Fall 2018 |
| Medicine, Course, Lecturer, Radiation Oncology Physics Course | Fall 2017 |
| Medicine, Course, Lecturer, Radiation Oncology Physics Course | Fall 2016 |
| Medicine, Course, Lecturer, Radiation Oncology Resident Physics Course | Spring 2016 |
| Medicine, Course, Lecturer, Physics Course for Radiation Oncology Residents | Spring 2015 - 2015 |
| Medicine, Course, Lecturer, Physics Course for Radiation Oncology Residents | Fall 2015 - 2015 |
Directed Student Learning
| Preceptor, Advised: Pin Johnson | 2022 - Present |
| Master's Thesis Committee Member, Radiation Oncology Physics Course Advised: Zachariah Douglas | 2022 - 2022 |
| Research Advisor, Uncertainty of Image Fusion in Gamma Knife Treatment Planning Advised: Jemeria Bonds | 2018 - 2018 |
Residency Training
| Radiation Oncology Physics Residency, Training Faculty | 2013 - Present |