Geoffrey G Zhang

Summary

Affiliation: H. Lee Moffitt Cancer Center and Research Institute
Country: USA

Publications

  1. pmc Normalization of ventilation data from 4D-CT to facilitate comparison between datasets acquired at different times
    Kujtim Latifi
    Department of Radiation Oncology, Moffitt Cancer Center, Tampa, Florida, United States of America
    PLoS ONE 8:e84083. 2013
  2. pmc IMRT treatment plans and functional planning with functional lung imaging from 4D-CT for thoracic cancer patients
    Tzung Chi Huang
    Department of Biomedical Imaging and Radiological Science, China Medical University, 91, Hsueh Shih Road, Taichung City, Taiwan
    Radiat Oncol 8:3. 2013
  3. pmc Four-dimensional dosimetry validation and study in lung radiotherapy using deformable image registration and Monte Carlo techniques
    Tzung Chi Huang
    Department of Biomedical Imaging and Radiological Sciences, National Yang Ming University, Taiwan
    Radiat Oncol 5:45. 2010
  4. doi request reprint Generation of composite dose and biological effective dose (BED) over multiple treatment modalities and multistage planning using deformable image registration
    Geoffrey Zhang
    Department of Radiation Oncology, Moffitt Cancer Center, Tampa, FL, USA
    Med Dosim 35:143-50. 2010
  5. ncbi request reprint Use of three-dimensional (3D) optical flow method in mapping 3D anatomic structure and tumor contours across four-dimensional computed tomography data
    Geoffrey G Zhang
    Department of Radiation Oncology, H Lee Moffitt Cancer Center, University of South Florida, Tampa, Florida, USA
    J Appl Clin Med Phys 9:2738. 2008
  6. ncbi request reprint Functional lung imaging in thoracic cancer radiotherapy
    Geoffrey Zhang
    Radiation Oncology Program at the Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
    Cancer Control 15:112-9. 2008
  7. doi request reprint Dose mapping: validation in 4D dosimetry with measurements and application in radiotherapy follow-up evaluation
    Geoffrey G Zhang
    H Lee Moffitt Cancer Center and Research Institute at the University of South Florida, Radiation Oncology, Tampa, FL 33612, United States
    Comput Methods Programs Biomed 90:25-37. 2008
  8. pmc Volumetric modulated arc planning for lung stereotactic body radiotherapy using conventional and unflattened photon beams: a dosimetric comparison with 3D technique
    Geoffrey G Zhang
    Radiation Oncology, Moffitt Cancer Center, Tampa, Florida, USA
    Radiat Oncol 6:152. 2011
  9. ncbi request reprint Effects of quantum noise in 4D-CT on deformable image registration and derived ventilation data
    Kujtim Latifi
    Department of Radiation Oncology, Moffitt Cancer Center, Tampa, FL, USA
    Phys Med Biol 58:7661-72. 2013
  10. doi request reprint Calculating prescription doses for new sources by biologically effective dose matching
    Jakub Pritz
    Department of Radiation Oncology, Moffitt Cancer Center, Tampa, FL 33612, USA
    Brachytherapy 11:521-7. 2012

Collaborators

Detail Information

Publications23

  1. pmc Normalization of ventilation data from 4D-CT to facilitate comparison between datasets acquired at different times
    Kujtim Latifi
    Department of Radiation Oncology, Moffitt Cancer Center, Tampa, Florida, United States of America
    PLoS ONE 8:e84083. 2013
    ..As a result, an additional variable--the tidal volume (TV)--can alter the results. Therefore, in this paper we propose to normalize the ventilation to the same TV to eliminate that uncertainty...
  2. pmc IMRT treatment plans and functional planning with functional lung imaging from 4D-CT for thoracic cancer patients
    Tzung Chi Huang
    Department of Biomedical Imaging and Radiological Science, China Medical University, 91, Hsueh Shih Road, Taichung City, Taiwan
    Radiat Oncol 8:3. 2013
    ..This study evaluates the dose of treatment plans on highly-functional volumes and performs functional treatment planning by incorporation of ventilation data from 4D-CT...
  3. pmc Four-dimensional dosimetry validation and study in lung radiotherapy using deformable image registration and Monte Carlo techniques
    Tzung Chi Huang
    Department of Biomedical Imaging and Radiological Sciences, National Yang Ming University, Taiwan
    Radiat Oncol 5:45. 2010
    ....
  4. doi request reprint Generation of composite dose and biological effective dose (BED) over multiple treatment modalities and multistage planning using deformable image registration
    Geoffrey Zhang
    Department of Radiation Oncology, Moffitt Cancer Center, Tampa, FL, USA
    Med Dosim 35:143-50. 2010
    ..With the understanding of limitations and uncertainties of the algorithms involved, it may be valuable for the overall treatment plan evaluation...
  5. ncbi request reprint Use of three-dimensional (3D) optical flow method in mapping 3D anatomic structure and tumor contours across four-dimensional computed tomography data
    Geoffrey G Zhang
    Department of Radiation Oncology, H Lee Moffitt Cancer Center, University of South Florida, Tampa, Florida, USA
    J Appl Clin Med Phys 9:2738. 2008
    ..in real patient 4D CT images were acceptable to clinicians. The 3D optical flow program is a good tool for anatomical structure and tumor volume contour mapping across 4D CT scans...
  6. ncbi request reprint Functional lung imaging in thoracic cancer radiotherapy
    Geoffrey Zhang
    Radiation Oncology Program at the Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
    Cancer Control 15:112-9. 2008
    ..Currently radiation oncologists do not have the ability to account for this variation when generating treatment plans...
  7. doi request reprint Dose mapping: validation in 4D dosimetry with measurements and application in radiotherapy follow-up evaluation
    Geoffrey G Zhang
    H Lee Moffitt Cancer Center and Research Institute at the University of South Florida, Radiation Oncology, Tampa, FL 33612, United States
    Comput Methods Programs Biomed 90:25-37. 2008
    ..It thus provides a more accurate analysis than other rigid or linear dose-image registration when used in studying treatment outcome versus dose...
  8. pmc Volumetric modulated arc planning for lung stereotactic body radiotherapy using conventional and unflattened photon beams: a dosimetric comparison with 3D technique
    Geoffrey G Zhang
    Radiation Oncology, Moffitt Cancer Center, Tampa, Florida, USA
    Radiat Oncol 6:152. 2011
    ..However dose distributions can be quite different from standard 3D therapy. This study quantifies those differences, with focus on VMAT plans using unflattened photon beams...
  9. ncbi request reprint Effects of quantum noise in 4D-CT on deformable image registration and derived ventilation data
    Kujtim Latifi
    Department of Radiation Oncology, Moffitt Cancer Center, Tampa, FL, USA
    Phys Med Biol 58:7661-72. 2013
    ..Therefore, high quality 4D-CT is essential for accurate ventilation images. ..
  10. doi request reprint Calculating prescription doses for new sources by biologically effective dose matching
    Jakub Pritz
    Department of Radiation Oncology, Moffitt Cancer Center, Tampa, FL 33612, USA
    Brachytherapy 11:521-7. 2012
    ..A mixture of two radionuclides in the seeds has been proposed for prostate cancer treatment. This study investigates a method for determining the prescription dose for these new seeds using the biological effective dose (BED)...
  11. ncbi request reprint Study of 201 non-small cell lung cancer patients given stereotactic ablative radiation therapy shows local control dependence on dose calculation algorithm
    Kujtim Latifi
    Department of Radiation Oncology, Moffitt Cancer Center, Tampa, Florida Electronic address
    Int J Radiat Oncol Biol Phys 88:1108-13. 2014
    ..However, such differences have seldom been previously directly correlated with outcomes of lung stereotactic ablative body radiation (SABR)...
  12. doi request reprint Dependence of ventilation image derived from 4D CT on deformable image registration and ventilation algorithms
    Kujtim Latifi
    Department of Radiation Oncology, H Lee Moffitt Cancer Center, Tampa, FL 33612, USA
    J Appl Clin Med Phys 14:4247. 2013
    ..Our data suggest that ventilation calculated from 4D CT depends on the DIR algorithm employed. Similarities between ΔV and Jacobian are higher than between ΔV and HU, and Jacobian and HU. ..
  13. ncbi request reprint Monte Carlo comparison of superficial dose between flattening filter free and flattened beams
    Khosrow Javedan
    Radiation Oncology Department, Moffitt Cancer Center, Tampa, FL, USA
    Phys Med 30:503-8. 2014
    ..4% ± 2.3%. The Monte Carlo simulations showed that due to the lower mean energy in the FFF beam, the clinical superficial dose is higher without the flattening filter compared to the flattened beam. ..
  14. ncbi request reprint Elastic image mapping for 4-D dose estimation in thoracic radiotherapy
    Thomas Guerrero
    Department of Radiation Oncology, The University of Texas M D Anderson Cancer Center, Houston, TX, USA
    Radiat Prot Dosimetry 115:497-502. 2005
    ..Demonstrate the path integration of a four-dimensional (4-D) dose distribution onto the 3-D anatomy...
  15. ncbi request reprint Providing a fast conversion of total dose to biological effective dose (BED) for hybrid seed brachytherapy
    Jakub Pritz
    Radiation Oncology, Moffitt Cancer Center, Tampa, FL 33612, USA
    J Appl Clin Med Phys 13:3800. 2012
    ..The method defined here can be extended to other ratios, as well as other tissues that are affected by permanent seed implant brachytherapy (i.e., breast)...
  16. doi request reprint Skin dose study of chest wall treatment with tomotherapy
    Khosrow Javedan
    Radiation Oncology Department, Moffitt Cancer Center, 12902 Magnolia Dr, Tampa, FL, 33612, USA
    Jpn J Radiol 27:355-62. 2009
    ..Because of the tangential delivery technique and lack of flattening filter in TomoTherapy accelerators, we hypothesize that during chest wall irradiation using tomotherapy, the skin dose will be adequate without bolus...
  17. ncbi request reprint Initial dosimetric evaluation of SmartArc - a novel VMAT treatment planning module implemented in a multi-vendor delivery chain
    Vladimir Feygelman
    Division of Radiation Oncology, H Lee Moffitt Cancer Center, Tampa, Florida 33612, USA
    J Appl Clin Med Phys 11:3169. 2010
    ..However each institution is encouraged to establish its own treatment planning guidelines based on the case complexity and acceptable error level...
  18. ncbi request reprint Validation of Pinnacle treatment planning system for use with Novalis delivery unit
    Vladimir Faygelman
    Division of Radiation Oncology, H Lee Moffitt Cancer Center, Tampa, Florida 33612, USA
    J Appl Clin Med Phys 11:3240. 2010
    ..6%. However, a larger than expected dose error with the single-arc plans, confined predominantly to the isocenter region, requires further investigation...
  19. ncbi request reprint Comparing dose in the build-up region between compensator- and MLC-based IMRT
    Khosrow Javedan
    Radiation Oncology, Moffitt Cancer Center, Tampa, FL 33612, USA
    J Appl Clin Med Phys 13:3748. 2012
    ..Compensator-based IMRT delivers less dose in the build-up region than MLC-based IMRT does, even though a compensator is closer to the skin than the MLC...
  20. ncbi request reprint Stereotactic body radiation therapy: evaluation of setup accuracy and targeting methods for a new couch integrated immobilization system
    John H Heinzerling
    Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, TX, USA
    Technol Cancer Res Treat 7:197-206. 2008
    ..With these results, a 5 mm expansion for PTV margins remains the standard for our institution...
  21. doi request reprint Four-dimensional computed tomography scan analysis of tumor and organ motion at varying levels of abdominal compression during stereotactic treatment of lung and liver
    John H Heinzerling
    Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
    Int J Radiat Oncol Biol Phys 70:1571-8. 2008
    ..To investigate the effectiveness of different abdominal compression levels on tumor and organ motion during stereotactic body radiotherapy of lower lobe lung and liver tumors using four-dimensional (4D)-CT scan analysis...
  22. ncbi request reprint 4-Dimensional conformal radiation therapy: image-guided radiation therapy and its application in lung cancer treatment
    Clint Park
    Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
    Clin Lung Cancer 8:187-94. 2006
    ..In this review article, we will discuss the concept of 4-dimensional RT, particularly as it applies to lung cancer, and elaborate on the technical advances that made it possible...
  23. ncbi request reprint Semi-automated CT segmentation using optic flow and Fourier interpolation techniques
    Tzung Chi Huang
    Department of Radiation Oncology, The University of Texas Southwestern Medical Center, 5801 Forest Park Road, Dallas, TX 75390 9183, USA
    Comput Methods Programs Biomed 84:124-34. 2006
    ..A solution is recommended to manually delineate contours on a sparse subset of slices and then map in both directions to fill the remaining slices...