J V Siebers

Summary

Affiliation: Virginia Commonwealth University
Country: USA

Publications

  1. ncbi request reprint Acceleration of dose calculations for intensity-modulated radiotherapy
    J V Siebers
    VA Commonwealth University, P O Box 980058, 401 College Street, Richmond, Virginia 23298 0058
    Med Phys 28:903-10. 2001
  2. pmc Coverage optimized planning: probabilistic treatment planning based on dose coverage histogram criteria
    J J Gordon
    Department of Radiation Oncology, Virginia Commonwealth University, P O Box 980058, Richmond, Virginia 23298, USA
    Med Phys 37:550-63. 2010
  3. pmc A comparison of HDR brachytherapy and IMRT techniques for dose escalation in prostate cancer: a radiobiological modeling study
    M Fatyga
    Department of Radiation Oncology, Virginia Commonwealth University Medical Center, 401 College Street, Richmond, Virginia 23298, USA
    Med Phys 36:3995-4006. 2009
  4. ncbi request reprint Clinical comparison of head and neck and prostate IMRT plans using absorbed dose to medium and absorbed dose to water
    N Dogan
    Radiation Oncology Department, Virginia Commonwealth University Medical Center, 401 College Street, Richmond, 23298, USA
    Phys Med Biol 51:4967-80. 2006
  5. ncbi request reprint Coverage-based treatment planning: optimizing the IMRT PTV to meet a CTV coverage criterion
    J J Gordon
    Department of Radiation Oncology, Virginia Commonwealth University, P O Box 980058, Richmond, Virginia 23298, USA
    Med Phys 36:961-73. 2009
  6. pmc A pseudoinverse deformation vector field generator and its applications
    C Yan
    Department of Radiation Oncology, Virginia Commonwealth University, P O Box 980058, Richmond, Virginia 23298, USA
    Med Phys 37:1117-28. 2010
  7. ncbi request reprint A dynamic compensation strategy to correct patient-positioning errors in conformal prostate radiotherapy
    A D Lauve
    Department of Radiation Oncology, Virginia Commonwealth University, Richmond, Virginia 23298 0058, USA
    Med Phys 33:1879-87. 2006
  8. ncbi request reprint Determination of maximum leaf velocity and acceleration of a dynamic multileaf collimator: implications for 4D radiotherapy
    K Wijesooriya
    Department of Radiation Oncology, Virginia Commonwealth University, Richmond, Virginia 23298, USA
    Med Phys 32:932-41. 2005
  9. ncbi request reprint A fluence-convolution method to calculate radiation therapy dose distributions that incorporate random set-up error
    W A Beckham
    Department of Physics and Astronomy, University of Victoria, BC, Canada
    Phys Med Biol 47:3465-73. 2002
  10. ncbi request reprint Quantifying the effect of intrafraction motion during breast IMRT planning and dose delivery
    R George
    Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia 23298, USA
    Med Phys 30:552-62. 2003

Collaborators

Detail Information

Publications21

  1. ncbi request reprint Acceleration of dose calculations for intensity-modulated radiotherapy
    J V Siebers
    VA Commonwealth University, P O Box 980058, 401 College Street, Richmond, Virginia 23298 0058
    Med Phys 28:903-10. 2001
    ..Substantial overall timesavings were observed, allowing IMRT dose planning to become a more interactive activity...
  2. pmc Coverage optimized planning: probabilistic treatment planning based on dose coverage histogram criteria
    J J Gordon
    Department of Radiation Oncology, Virginia Commonwealth University, P O Box 980058, Richmond, Virginia 23298, USA
    Med Phys 37:550-63. 2010
    ..Further research is necessary to determine the benefits of COP planning, in terms of tumor control probability and/or normal tissue complication probabilities...
  3. pmc A comparison of HDR brachytherapy and IMRT techniques for dose escalation in prostate cancer: a radiobiological modeling study
    M Fatyga
    Department of Radiation Oncology, Virginia Commonwealth University Medical Center, 401 College Street, Richmond, Virginia 23298, USA
    Med Phys 36:3995-4006. 2009
    ..A saturation BED, beyond which no further injury can occur, must be assumed. Modeling of organ motion uncertainties yields mean outcomes similar to static plan outcomes...
  4. ncbi request reprint Clinical comparison of head and neck and prostate IMRT plans using absorbed dose to medium and absorbed dose to water
    N Dogan
    Radiation Oncology Department, Virginia Commonwealth University Medical Center, 401 College Street, Richmond, 23298, USA
    Phys Med Biol 51:4967-80. 2006
    ..8% for H&N and 8.0% for prostate cases when the hard-bone-containing structures such as femoral heads are present. Ignoring differences between D(m) and D(w) will result in systematic dose errors ranging from 0% to 8%...
  5. ncbi request reprint Coverage-based treatment planning: optimizing the IMRT PTV to meet a CTV coverage criterion
    J J Gordon
    Department of Radiation Oncology, Virginia Commonwealth University, P O Box 980058, Richmond, Virginia 23298, USA
    Med Phys 36:961-73. 2009
    ....
  6. pmc A pseudoinverse deformation vector field generator and its applications
    C Yan
    Department of Radiation Oncology, Virginia Commonwealth University, P O Box 980058, Richmond, Virginia 23298, USA
    Med Phys 37:1117-28. 2010
    ..To present, implement, and test a self-consistent pseudoinverse displacement vector field (PIDVF) generator, which preserves the location of information mapped back-and-forth between image sets...
  7. ncbi request reprint A dynamic compensation strategy to correct patient-positioning errors in conformal prostate radiotherapy
    A D Lauve
    Department of Radiation Oncology, Virginia Commonwealth University, Richmond, Virginia 23298 0058, USA
    Med Phys 33:1879-87. 2006
    ..Further, the ability of dynamic compensation to correct large positioning errors has implications for the accuracy necessary during the initial patient setup and, hence, patient throughput for prostate radiotherapy...
  8. ncbi request reprint Determination of maximum leaf velocity and acceleration of a dynamic multileaf collimator: implications for 4D radiotherapy
    K Wijesooriya
    Department of Radiation Oncology, Virginia Commonwealth University, Richmond, Virginia 23298, USA
    Med Phys 32:932-41. 2005
    ..Given the present MLC mechanical characteristics, 4D radiotherapy is feasible for up to 97% of respiratory motion. For the largest respiratory motion velocities observed, beam delivery should be temporarily stopped (beam hold)...
  9. ncbi request reprint A fluence-convolution method to calculate radiation therapy dose distributions that incorporate random set-up error
    W A Beckham
    Department of Physics and Astronomy, University of Victoria, BC, Canada
    Phys Med Biol 47:3465-73. 2002
    ..However, dose-matrix-convolution reduces the random statistical noise in MC calculations. Fluence-convolution can easily be applied to convolution/superposition based dose-calculation algorithms...
  10. ncbi request reprint Quantifying the effect of intrafraction motion during breast IMRT planning and dose delivery
    R George
    Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia 23298, USA
    Med Phys 30:552-62. 2003
    ..This motion can be limited by breath-hold, respiratory gated, or 4D techniques...
  11. ncbi request reprint Monte Carlo as a four-dimensional radiotherapy treatment-planning tool to account for respiratory motion
    P J Keall
    Department of Radiation Oncology, Virginia Commonwealth University, Richmond, VA 23298 0058, USA
    Phys Med Biol 49:3639-48. 2004
    ....
  12. pmc Evaluation of dose prediction errors and optimization convergence errors of deliverable-based head-and-neck IMRT plans computed with a superposition/convolution dose algorithm
    I B Mihaylov
    Department of Radiation Oncology, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205, USA
    Med Phys 35:3722-7. 2008
    ..71, and there was no correlation for the organs at risk. Because full MC-based optimization results in lower normal tissue doses, this method proves advantageous for HN IMRT optimization...
  13. pmc Evaluation of dosimetric margins in prostate IMRT treatment plans
    J J Gordon
    Department of Radiation Oncology, Virginia Commonwealth University, PO Box 980058, Richmond, VA 23298, USA
    Med Phys 35:569-75. 2008
    ..The DMD is a useful planning metric, which generalizes the ICRU conformity index. DMDs could vary with number of beams, beam arrangements, TPS, and treatment site...
  14. ncbi request reprint A strategy to correct for intrafraction target translation in conformal prostate radiotherapy: simulation results
    P J Keall
    Department of Radiation Oncology, Virginia Commonwealth University, Richmond, Virginia 23298, USA
    Med Phys 34:1944-51. 2007
    ..The compensation strategy could be performed automatically with appropriate enhancements to available delivery software...
  15. ncbi request reprint Quantification of the impact of MLC modeling and tissue heterogeneities on dynamic IMRT dose calculations
    I B Mihaylov
    Department of Radiation Oncology, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205, USA
    Med Phys 34:1244-52. 2007
    ....
  16. ncbi request reprint Convolution method and CTV-to-PTV margins for finite fractions and small systematic errors
    J J Gordon
    Department of Radiation Oncology, Virginia Commonwealth University, PO Box 980058, Richmond, VA 23298, USA
    Phys Med Biol 52:1967-90. 2007
    ..With the alternative margin algorithm, the maximum underestimate is 7%. These results suggest that the VHMF should be used with caution for hypofractionated treatment and in adaptive therapy...
  17. ncbi request reprint Evaluation of clinical margins via simulation of patient setup errors in prostate IMRT treatment plans
    J J Gordon
    Department of Radiation Oncology, Virginia Commonwealth University, PO Box 980058, Richmond, Virginia 23298, USA
    Med Phys 34:202-14. 2007
    ..However, approximating DPPs is acceptable, provided care is taken with structures such as the nodal CTV which lie close to the surface...
  18. ncbi request reprint On the use of EPID-based implanted marker tracking for 4D radiotherapy
    P J Keall
    Department of Radiation Oncology, Virginia Commonwealth University, Richmond, Virginia 23298, USA
    Med Phys 31:3492-9. 2004
    ....
  19. ncbi request reprint A comparison of Monte Carlo dose calculation denoising techniques
    I El Naqa
    Washington University, St Louis, MO, USA
    Phys Med Biol 50:909-22. 2005
    ..In almost all cases, the evaluated methods provided acceleration of MC results towards statistically more accurate results...
  20. pmc Analytic IMRT dose calculations utilizing Monte Carlo to predict MLC fluence modulation
    I B Mihaylov
    Department of Radiation Oncology, Virginia Commonwealth University, PO Box 980058, Richmond, Virginia 23298, USA
    Med Phys 33:828-39. 2006
    ..These results quantify the enhancement in accuracy in IMRT dose calculations when MC is used to model the MLC field modulation...
  21. ncbi request reprint Investigation of patient, tumour and treatment variables affecting residual motion for respiratory-gated radiotherapy
    R George
    Department of Radiation Oncology, Virginia Commonwealth University, Richmond, VA, USA
    Phys Med Biol 51:5305-19. 2006
    ....