Jeff D Williamson

Summary

Affiliation: Virginia Commonwealth University
Country: USA

Publications

  1. ncbi request reprint On the question of defining misadministration in brachytherapy: point
    Jeffrey F Williamson
    Department of Radiation Oncology Virginia Commonwealth University Richmond, VA, USA
    Brachytherapy 1:121-3. 2002
  2. ncbi request reprint Monte Carlo and experimental dosimetry of an 1251 brachytherapy seed
    James Dolan
    Department of Radiation Oncology, Beth Israel Medical Center, New York, New York 10003, USA
    Med Phys 33:4675-84. 2006
  3. ncbi request reprint What's new in brachytherapy?
    Jeffrey F Williamson
    Division of Medical Physics, Department of Radiation Oncology, Virginia Commonwealth University, Richmond, VA 23298, USA
    J Am Coll Radiol 2:86-9. 2005
  4. ncbi request reprint Brachytherapy technology and physics practice since 1950: a half-century of progress
    Jeffrey F Williamson
    Department of Radiation Oncology, Virginia Commonwealth University, Richmond, VA 23298, USA
    Phys Med Biol 51:R303-25. 2006
  5. ncbi request reprint The current NRC definitions of therapy misadministration are vague, do not reflect the norms of clinical practice, and should be rewritten. Against the proposition
    Jeffrey F Williamson
    Virginia Commonwealth University, Department of Radiation Oncology, Richmond, Virginia 23298, USA
    Med Phys 31:693-4. 2004
  6. ncbi request reprint On two-parameter models of photon cross sections: application to dual-energy CT imaging
    Jeffrey F Williamson
    Department of Radiation Oncology, Virginia Commenwealth University, Richmond, Virginia 23284, USA
    Med Phys 33:4115-29. 2006
  7. doi request reprint Current brachytherapy quality assurance guidance: does it meet the challenges of emerging image-guided technologies?
    Jeffrey F Williamson
    Department of Radiation Oncology, Virginia Commonwealth University, Richmond, VA23298, USA
    Int J Radiat Oncol Biol Phys 71:S18-22. 2008
  8. doi request reprint Quality assurance needs for modern image-based radiotherapy: recommendations from 2007 interorganizational symposium on "quality assurance of radiation therapy: challenges of advanced technology"
    Jeffrey F Williamson
    Department of Radiation Oncology, Virginia Commonwealth University, Richmond, VA 23298, USA
    Int J Radiat Oncol Biol Phys 71:S2-12. 2008
  9. ncbi request reprint Dosimetric effects of seed anisotropy and interseed attenuation for 103Pd and 125I prostate implants
    Omar Chibani
    Massey Cancer Center, Virginia Commonwealth University, Richmond, Virginia 23298, USA
    Med Phys 32:2557-66. 2005
  10. ncbi request reprint Dosimetric prerequisites for routine clinical use of photon emitting brachytherapy sources with average energy higher than 50 kev
    Zuofeng Li
    Department of Radiation Oncology, University of Florida, Gainesville, Florida 32610, USA
    Med Phys 34:37-40. 2007

Detail Information

Publications36

  1. ncbi request reprint On the question of defining misadministration in brachytherapy: point
    Jeffrey F Williamson
    Department of Radiation Oncology Virginia Commonwealth University Richmond, VA, USA
    Brachytherapy 1:121-3. 2002
  2. ncbi request reprint Monte Carlo and experimental dosimetry of an 1251 brachytherapy seed
    James Dolan
    Department of Radiation Oncology, Beth Israel Medical Center, New York, New York 10003, USA
    Med Phys 33:4675-84. 2006
    ..The angular dependence of the relative energy response was found to have a complex and significant dependence on measurement medium and internal geometry of the source...
  3. ncbi request reprint What's new in brachytherapy?
    Jeffrey F Williamson
    Division of Medical Physics, Department of Radiation Oncology, Virginia Commonwealth University, Richmond, VA 23298, USA
    J Am Coll Radiol 2:86-9. 2005
  4. ncbi request reprint Brachytherapy technology and physics practice since 1950: a half-century of progress
    Jeffrey F Williamson
    Department of Radiation Oncology, Virginia Commonwealth University, Richmond, VA 23298, USA
    Phys Med Biol 51:R303-25. 2006
    ....
  5. ncbi request reprint The current NRC definitions of therapy misadministration are vague, do not reflect the norms of clinical practice, and should be rewritten. Against the proposition
    Jeffrey F Williamson
    Virginia Commonwealth University, Department of Radiation Oncology, Richmond, Virginia 23298, USA
    Med Phys 31:693-4. 2004
  6. ncbi request reprint On two-parameter models of photon cross sections: application to dual-energy CT imaging
    Jeffrey F Williamson
    Department of Radiation Oncology, Virginia Commenwealth University, Richmond, Virginia 23284, USA
    Med Phys 33:4115-29. 2006
    ..5%-17.0%, respectively. Both models were found to exhibit similar sensitivities to image-intensity measurement uncertainties. Of the two models, BVM is the most promising approach for realizing dual-energy CT cross-section measurement...
  7. doi request reprint Current brachytherapy quality assurance guidance: does it meet the challenges of emerging image-guided technologies?
    Jeffrey F Williamson
    Department of Radiation Oncology, Virginia Commonwealth University, Richmond, VA23298, USA
    Int J Radiat Oncol Biol Phys 71:S18-22. 2008
    ..Adaptive replanning in brachytherapy faces unsolved problems similar to that of image-guided adaptive external beam radiotherapy...
  8. doi request reprint Quality assurance needs for modern image-based radiotherapy: recommendations from 2007 interorganizational symposium on "quality assurance of radiation therapy: challenges of advanced technology"
    Jeffrey F Williamson
    Department of Radiation Oncology, Virginia Commonwealth University, Richmond, VA 23298, USA
    Int J Radiat Oncol Biol Phys 71:S2-12. 2008
    ..Finally, government and private entities committed to improved healthcare quality and safety should support research directed toward addressing QA problems in image-guided therapies...
  9. ncbi request reprint Dosimetric effects of seed anisotropy and interseed attenuation for 103Pd and 125I prostate implants
    Omar Chibani
    Massey Cancer Center, Virginia Commonwealth University, Richmond, Virginia 23298, USA
    Med Phys 32:2557-66. 2005
    ....
  10. ncbi request reprint Dosimetric prerequisites for routine clinical use of photon emitting brachytherapy sources with average energy higher than 50 kev
    Zuofeng Li
    Department of Radiation Oncology, University of Florida, Gainesville, Florida 32610, USA
    Med Phys 34:37-40. 2007
    ....
  11. ncbi request reprint Prospects for quantitative computed tomography imaging in the presence of foreign metal bodies using statistical image reconstruction
    Jeffrey F Williamson
    Department of Radiation Oncology, Washington University, St Louis, Missouri 63110, USA
    Med Phys 29:2404-18. 2002
    ....
  12. ncbi request reprint On the development of consensus values of reference dosimetry parameters for interstitial brachytherapy sources
    Gordon H Chan
    Department of Radiation Oncology, Cleveland Clinic Foundation, Cleveland, Ohio 44195, USA
    Med Phys 31:1040-5. 2004
    ..Consensus values for the dose-rate constant, radial dose function, and anisotropy parameters are presented for the LS-1 Model 125I seed...
  13. ncbi request reprint Improving IMRT dose accuracy via deliverable Monte Carlo optimization for the treatment of head and neck cancer patients
    Nesrin Dogan
    Radiation Oncology Department, Virginia Commonwealth University Medical Center, 401 College Street, Richmond, Virginia 23298, USA
    Med Phys 33:4033-43. 2006
    ..0%. The magnitude of the DPE(SC) and OCE(SC) differences demonstrate the importance of using the most accurate available algorithm in the deliverable IMRT optimization process, especially for the estimation of normal structure doses...
  14. ncbi request reprint Update of AAPM Task Group No. 43 Report: A revised AAPM protocol for brachytherapy dose calculations
    Mark J Rivard
    Department of Radiation Oncology, Tufts New England Medical Center, Boston, Massachusetts 02111, USA
    Med Phys 31:633-74. 2004
    ..These changes should be carefully evaluated and reviewed with the radiation oncologist preceding implementation of the current protocol...
  15. ncbi request reprint Statistical reconstruction for x-ray computed tomography using energy-integrating detectors
    Giovanni M Lasio
    Division of Medical Physics, Department of Radiation Oncology, Virginia Commonwealth University, Richmond, VA 23298, USA
    Phys Med Biol 52:2247-66. 2007
    ....
  16. ncbi request reprint Recommendations of the American Association of Physicists in Medicine regarding the impact of implementing the 2004 task group 43 report on dose specification for 103Pd and 125I interstitial brachytherapy
    Jeffrey F Williamson
    Photon Emitting Brachytherapy Dosimetry Subcommittee of the Radiation Therapy Committee, Department of Radiation Oncology, Virginia Commonwealth University, Richmond, Virginia 23298, USA
    Med Phys 32:1424-39. 2005
    ..The AAPM recommends that the radiation oncology community review this report and consider whether the currently recommended dose level (125 Gy) needs to be revised...
  17. doi request reprint A method for evaluating quality assurance needs in radiation therapy
    M Saiful Huq
    Department of Radiation Oncology, University of Pittsburgh Cancer Institute, Pittsburgh, PA 15232, USA
    Int J Radiat Oncol Biol Phys 71:S170-3. 2008
    ..Recommendations on how to apply this new approach to individual clinics and further research and development will also be discussed...
  18. ncbi request reprint Prospects for quantitative two-dimensional radiochromic film dosimetry for low dose-rate brachytherapy sources
    Yi Le
    Department of Radiation Oncology, Virginia Commonwealth University, 401 College Street, PO Box 980058, Richmond, Virginia 23298, USA
    Med Phys 33:4622-34. 2006
    ..The impacts of this work on the future use of new type of RCF were also discussed...
  19. ncbi request reprint MCPI: a sub-minute Monte Carlo dose calculation engine for prostate implants
    Omar Chibani
    Massey Cancer Center, Virginia Commonwealth University, Richmond, Virginia 23298, USA
    Med Phys 32:3688-98. 2005
    ..In conclusion, sub-minute dose calculations, taking into account all dosimetric effects, are now possible for more accurate dose planning and dose assessment in prostate brachytherapy...
  20. ncbi request reprint Effect of patient setup errors on simultaneously integrated boost head and neck IMRT treatment plans
    Jeffrey V Siebers
    Department of Radiation Oncology, Virginia Commonwealth University Medical Center, 501 College Street, Richmond, VA 23298, USA
    Int J Radiat Oncol Biol Phys 63:422-33. 2005
    ....
  21. doi request reprint Foreword. Symposium " Quality Assurance of Radiation Therapy: The Challenges of Advanced Technologies"
    Jeffrey F Williamson
    Department of Radiation Oncology, Virginia Commonwealth University, Richmond, VA
    Int J Radiat Oncol Biol Phys 71:S1. 2008
  22. pmc Monte Carlo evaluation of scatter mitigation strategies in cone-beam CT
    Dimitrios Lazos
    Department of Radiation Oncology, Beth Israel Medical Center, New York, New York 10003, USA
    Med Phys 37:5456-70. 2010
    ....
  23. ncbi request reprint Monte Carlo-based dosimetry of head-and-neck patients treated with SIB-IMRT
    Nirmal Sakthi
    Department of Radiation Oncology, Virginia Commonwealth University, Richmond, VA 23298, USA
    Int J Radiat Oncol Biol Phys 64:968-77. 2006
    ....
  24. pmc Clinical application and validation of an iterative forward projection matching algorithm for permanent brachytherapy seed localization from conebeam-CT x-ray projections
    Damodar Pokhrel
    Department of Radiation Oncology, School of Medicine, Virginia Commonwealth University, Richmond, Virginia 23298, USA
    Med Phys 37:5092-101. 2010
    ..To experimentally validate a new algorithm for reconstructing the 3D positions of implanted brachytherapy seeds from postoperatively acquired 2D conebeam-CT (CBCT) projection images...
  25. ncbi request reprint Supplement to the 2004 update of the AAPM Task Group No. 43 Report
    Mark J Rivard
    Department of Radiation Oncology, Tufts University School of Medicine, Boston, Massachusetts 02111, USA
    Med Phys 34:2187-205. 2007
    ..Adoption of these recommendations may result in changes to patient dose calculations, and these changes should be carefully evaluated and reviewed with the radiation oncologist prior to implementation of the current protocol...
  26. ncbi request reprint American Brachytherapy Society recommends no change for prostate permanent implant dose prescriptions using iodine-125 or palladium-103
    Mark J Rivard
    Departments of Radiation Oncology and Medical Physics, Tufts New England Medical Center, Boston, MA 02111, USA
    Brachytherapy 6:34-7. 2007
    ..Consequently, the American Brachytherapy Society (ABS) considered the nature of these changes towards issuing recommended dose prescriptions for 125I and 103Pd interstitial brachytherapy implants for monotherapy and standard boosts...
  27. ncbi request reprint Image reconstruction for transmission tomography when projection data are incomplete
    Donald L Snyder
    Washington University, St Louis, MO, USA
    Phys Med Biol 51:5603-19. 2006
    ..The methods converge monotonically to the same limit points. Results of testing the methods with both simulated and real data are given...
  28. ncbi request reprint Monte Carlo-aided dosimetry of the theragenics TheraSeed model 200 103Pd interstitial brachytherapy seed
    James I Monroe
    Radiation Oncology Center, Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Missouri 63110, USA
    Med Phys 29:609-21. 2002
    ..The findings of this study, in combination with 5% corrections applied to WAFAC measurements performed in 1999, imply that changes in the AAPM's recommended ratios as large as 6%, are indicated...
  29. ncbi request reprint Clinical evidence that more precisely defined dose distributions will improve cancer survival and decrease morbidity
    Paul J Keall
    Med Phys 30:1281-2. 2003
  30. ncbi request reprint Procedures for establishing and maintaining consistent air-kerma strength standards for low-energy, photon-emitting brachytherapy sources: recommendations of the Calibration Laboratory Accreditation Subcommittee of the American Association of Physicists i
    Larry A DeWerd
    Accredited Dosimetry Calibration Laboratory, Department of Medical Physics, University of Wisconsin, Madison, Wisconsin 53706, USA
    Med Phys 31:675-81. 2004
    ..A description of these procedures is provided to the clinical users for traceability purposes as well as to provide guidance to the manufacturers of brachytherapy sources and ADCLs with regard to these procedures...
  31. ncbi request reprint Third party brachytherapy seed calibrations and physicist responsibilities
    Wayne M Butler
    Med Phys 33:247-8. 2006
  32. ncbi request reprint Properties of preprocessed sinogram data in x-ray computed tomography
    Bruce R Whiting
    Electronic Radiology Lab, Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Missouri 63110, USA
    Med Phys 33:3290-303. 2006
    ..Results indicate the limitations of current models and suggest improvements for the description of CT signal properties...
  33. ncbi request reprint Pose estimation of known objects during transmission tomographic image reconstruction
    Ryan J Murphy
    Advanced Information Systems, General Dynamics, Ypsilanti, MI 48197, USA
    IEEE Trans Med Imaging 25:1392-404. 2006
    ..Results from two-dimensional simulations are shown in this paper. The extension of the model and methods used to three dimensions is outlined...
  34. ncbi request reprint Accelerated Monte Carlo based dose calculations for brachytherapy planning using correlated sampling
    Håkan Hedtjärn
    Department of Radiation Physics, Linkoping University, Sweden
    Phys Med Biol 47:351-76. 2002
    ..Correlated sampling significantly improves efficiency under selected circumstances and, in combination with other variance reduction strategies, may make MC-based treatment planning a reality for brachytherapy...
  35. ncbi request reprint Dosimetric properties of improved GafChromic films for seven different digitizers
    Slobodan Devic
    Medical Physics Department, McGill University Health Centre, Montreal, Quebec, Canada
    Med Phys 31:2392-401. 2004
    ..Notwithstanding the significant variations in sensitivity, the studied densitometers exhibit very similar precision for GafChromic film based dose measurements above 5 Gy...
  36. ncbi request reprint Dosimetric characteristics of the DRAXIMAGE model LS-1 1-125 interstitial brachytherapy source design: a Monte Carlo investigation
    Jeffrey F Williamson
    Radiation Oncology Center, Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Missouri 63110, USA
    Med Phys 29:509-21. 2002
    ....