H H Liu

Summary

Affiliation: The University of Texas
Country: USA

Publications

  1. ncbi request reprint Beam angle optimization and reduction for intensity-modulated radiation therapy of non-small-cell lung cancers
    H Helen Liu
    Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, Houston, TX 77030, USA
    Int J Radiat Oncol Biol Phys 65:561-72. 2006
  2. ncbi request reprint Modeling photon output caused by backscattered radiation into the monitor chamber from collimator jaws using a Monte Carlo technique
    H H Liu
    Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, Houston 77030, USA
    Med Phys 27:737-44. 2000
  3. ncbi request reprint A method of simulating dynamic multileaf collimators using Monte Carlo techniques for intensity-modulated radiation therapy
    H H Liu
    Department of Radiation Physics The University of Texas MD Anderson Cancer Center, Houston, USA
    Phys Med Biol 46:2283-98. 2001
  4. ncbi request reprint Assessing respiration-induced tumor motion and internal target volume using four-dimensional computed tomography for radiotherapy of lung cancer
    H Helen Liu
    Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, Houston, TX 77030, USA
    Int J Radiat Oncol Biol Phys 68:531-40. 2007
  5. ncbi request reprint Evaluation of internal lung motion for respiratory-gated radiotherapy using MRI: Part II-margin reduction of internal target volume
    H Helen Liu
    Division of Radiation Oncology, University of Texas M D Anderson Cancer Center, Houston, TX 77030, USA
    Int J Radiat Oncol Biol Phys 60:1473-83. 2004
  6. ncbi request reprint Dm rather than Dw should be used in Monte Carlo treatment planning. For the proposition
    H Helen Liu
    The University of Texas MD Anderson Cancer Center, Department of Radiation Physics, Houston 77030, USA
    Med Phys 29:922-3. 2002
  7. ncbi request reprint An investigation of energy spectrum and lineal energy variations in mega-voltage photon beams used for radiotherapy
    H H Liu
    Department of Radiation Physics, University of Texas MD Anderson Cancer Center, Houston, Texas, USA
    Radiat Prot Dosimetry 99:425-7. 2002
  8. ncbi request reprint Feasibility of sparing lung and other thoracic structures with intensity-modulated radiotherapy for non-small-cell lung cancer
    H Helen Liu
    Division of Radiation Oncology, The University of Texas M D Anderson Cancer Center, Houston, TX 77030, USA
    Int J Radiat Oncol Biol Phys 58:1268-79. 2004
  9. ncbi request reprint Measuring dose distributions for enhanced dynamic wedges using a multichamber detector array
    H H Liu
    Division of Radiation Oncology, Mayo Clinic and Foundation, Rochester, Minnesota 55905, USA
    Med Phys 24:1515-9. 1997
  10. ncbi request reprint Verification of tangential breast treatment dose calculations in a commercial 3D treatment planning system
    C T Baird
    Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, Texas 77030, USA
    J Appl Clin Med Phys 2:73-84. 2001

Collaborators

Detail Information

Publications39

  1. ncbi request reprint Beam angle optimization and reduction for intensity-modulated radiation therapy of non-small-cell lung cancers
    H Helen Liu
    Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, Houston, TX 77030, USA
    Int J Radiat Oncol Biol Phys 65:561-72. 2006
    ..To optimize beam angles and reduce the number of beams used for intensity-modulated radiation therapy (IMRT) of non-small-cell lung cancer (NSCLC)...
  2. ncbi request reprint Modeling photon output caused by backscattered radiation into the monitor chamber from collimator jaws using a Monte Carlo technique
    H H Liu
    Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, Houston 77030, USA
    Med Phys 27:737-44. 2000
    ..Applying the backscatter correction improves the accuracy of monitor-unit calculation using a model-based dose calculation algorithm such as the convolution method...
  3. ncbi request reprint A method of simulating dynamic multileaf collimators using Monte Carlo techniques for intensity-modulated radiation therapy
    H H Liu
    Department of Radiation Physics The University of Texas MD Anderson Cancer Center, Houston, USA
    Phys Med Biol 46:2283-98. 2001
    ..More importantly, the dynamic motion of the leaves could be simulated more faithfully by using the above leaf-position sampling technique in the Monte Carlo simulation...
  4. ncbi request reprint Assessing respiration-induced tumor motion and internal target volume using four-dimensional computed tomography for radiotherapy of lung cancer
    H Helen Liu
    Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, Houston, TX 77030, USA
    Int J Radiat Oncol Biol Phys 68:531-40. 2007
    ..To assess three-dimensional tumor motion caused by respiration and internal target volume (ITV) for radiotherapy of lung cancer...
  5. ncbi request reprint Evaluation of internal lung motion for respiratory-gated radiotherapy using MRI: Part II-margin reduction of internal target volume
    H Helen Liu
    Division of Radiation Oncology, University of Texas M D Anderson Cancer Center, Houston, TX 77030, USA
    Int J Radiat Oncol Biol Phys 60:1473-83. 2004
    ....
  6. ncbi request reprint Dm rather than Dw should be used in Monte Carlo treatment planning. For the proposition
    H Helen Liu
    The University of Texas MD Anderson Cancer Center, Department of Radiation Physics, Houston 77030, USA
    Med Phys 29:922-3. 2002
  7. ncbi request reprint An investigation of energy spectrum and lineal energy variations in mega-voltage photon beams used for radiotherapy
    H H Liu
    Department of Radiation Physics, University of Texas MD Anderson Cancer Center, Houston, Texas, USA
    Radiat Prot Dosimetry 99:425-7. 2002
    ..8 keV.micron-1 from the calculation). The beam quality factor was estimated to vary within 20% due to the change of the energy spectrum for the radiotherapy photon fields...
  8. ncbi request reprint Feasibility of sparing lung and other thoracic structures with intensity-modulated radiotherapy for non-small-cell lung cancer
    H Helen Liu
    Division of Radiation Oncology, The University of Texas M D Anderson Cancer Center, Houston, TX 77030, USA
    Int J Radiat Oncol Biol Phys 58:1268-79. 2004
    ....
  9. ncbi request reprint Measuring dose distributions for enhanced dynamic wedges using a multichamber detector array
    H H Liu
    Division of Radiation Oncology, Mayo Clinic and Foundation, Rochester, Minnesota 55905, USA
    Med Phys 24:1515-9. 1997
    ....
  10. ncbi request reprint Verification of tangential breast treatment dose calculations in a commercial 3D treatment planning system
    C T Baird
    Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, Texas 77030, USA
    J Appl Clin Med Phys 2:73-84. 2001
    ..These results indicated that the treatment planning system calculates doses at the midplane with clinically acceptable accuracy in conditions simulating tangential breast treatment...
  11. ncbi request reprint Assessment of geometrical accuracy of magnetic resonance images for radiation therapy of lung cancers
    N Koch
    Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, 1515 Holcombe Boulevard, Houston 77030, USA
    J Appl Clin Med Phys 4:352-64. 2003
    ..However, the spatial accuracy in periphery of the axial FSE images exceeded the acceptable criteria for the acquisition parameters used in this study...
  12. ncbi request reprint Risk factors for acute esophagitis in non-small-cell lung cancer patients treated with concurrent chemotherapy and three-dimensional conformal radiotherapy
    Xiong Wei
    Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, Houston, TX 77030, USA
    Int J Radiat Oncol Biol Phys 66:100-7. 2006
    ..To determine the risk factors for acute esophagitis (AE) in non-small-cell lung cancer (NSCLC) patients treated with concurrent chemotherapy (CCT) and three-dimensional conformal radiotherapy (3D-CRT)...
  13. ncbi request reprint Development and commissioning of a multileaf collimator model in monte carlo dose calculations for intensity-modulated radiation therapy
    Si Young Jang
    Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, 1515 Holcombe Blvd, Houston, Texas 77030, USA
    Med Phys 33:770-81. 2006
    ....
  14. ncbi request reprint Dose-volume modeling of the risk of postoperative pulmonary complications among esophageal cancer patients treated with concurrent chemoradiotherapy followed by surgery
    Susan L Tucker
    Department of Biostatistics and Applied Mathematics, The University of Texas M D Anderson Cancer Center, Houston, TX 77030, USA
    Int J Radiat Oncol Biol Phys 66:754-61. 2006
    ..The aim of this study was to investigate the effect of radiation dose distribution in the lung on the risk of postoperative pulmonary complications among esophageal cancer patients...
  15. ncbi request reprint Dosimetric verification for intensity-modulated radiotherapy of thoracic cancers using experimental and Monte Carlo approaches
    Si Young Jang
    Department of Radiation Physics, University of Texas M D Anderson Cancer Center, Houston, TX 77030, USA
    Int J Radiat Oncol Biol Phys 66:939-48. 2006
    ..To investigate the dosimetric accuracy of commercial treatment planning systems used in intensity-modulated radiotherapy (IMRT) for thoracic cancer...
  16. ncbi request reprint The prevalence of myocardial ischemia after concurrent chemoradiation therapy as detected by gated myocardial perfusion imaging in patients with esophageal cancer
    Isis W Gayed
    Department of Nuclear Medicine, University of Texas M D Anderson Cancer Center, Houston, Texas, USA
    J Nucl Med 47:1756-62. 2006
    ..However, the prevalence and association of such abnormalities with RT in esophageal cancer patients have not been investigated previously...
  17. ncbi request reprint Initial evaluation of treatment-related pneumonitis in advanced-stage non-small-cell lung cancer patients treated with concurrent chemotherapy and intensity-modulated radiotherapy
    Sue S Yom
    Department of Radiation Oncology, The University of Texas M D Anderson Cancer Center, Houston, TX 77030, USA
    Int J Radiat Oncol Biol Phys 68:94-102. 2007
    ..To investigate the rate of high-grade treatment-related pneumonitis (TRP) in patients with advanced non-small-cell lung cancer (NSCLC) treated with concurrent chemotherapy and intensity-modulated radiotherapy (IMRT)...
  18. doi request reprint Risk factors for pericardial effusion in inoperable esophageal cancer patients treated with definitive chemoradiation therapy
    Xiong Wei
    Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, Houston, TX 77030, USA
    Int J Radiat Oncol Biol Phys 70:707-14. 2008
    ..To identify clinical and dosimetric factors influencing the risk of pericardial effusion (PCE) in patients with inoperable esophageal cancer treated with definitive concurrent chemotherapy and radiation therapy (RT)...
  19. ncbi request reprint Preserving functional lung using perfusion imaging and intensity-modulated radiation therapy for advanced-stage non-small cell lung cancer
    Yoshiyuki Shioyama
    Department of Radiation Oncology, The University of Texas M D Anderson Cancer Center, Houston, TX 77030, USA
    Int J Radiat Oncol Biol Phys 68:1349-58. 2007
    ..To assess quantitatively the impact of incorporating functional lung imaging into intensity-modulated radiation therapy planning for locally advanced non-small cell lung cancer (NSCLC)...
  20. doi request reprint Underestimation of low-dose radiation in treatment planning of intensity-modulated radiotherapy
    Si Young Jang
    Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA
    Int J Radiat Oncol Biol Phys 71:1537-46. 2008
    ..To investigate potential dose calculation errors in the low-dose regions and identify causes of such errors for intensity-modulated radiotherapy (IMRT)...
  21. ncbi request reprint Dose-dependent pulmonary toxicity after postoperative intensity-modulated radiotherapy for malignant pleural mesothelioma
    David C Rice
    Department of Thoracic and Cardiovascular Surgery, The University of Texas M D Anderson Cancer Center, Houston, TX 77030, USA
    Int J Radiat Oncol Biol Phys 69:350-7. 2007
    ..To determine the incidence of fatal pulmonary events after extrapleural pneumonectomy and hemithoracic intensity-modulated radiotherapy (IMRT) for malignant pleural mesothelioma...
  22. doi request reprint Association between systemic chemotherapy before chemoradiation and increased risk of treatment-related pneumonitis in esophageal cancer patients treated with definitive chemoradiotherapy
    Shulian Wang
    Department of Radiation Oncology, Cancer Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
    J Thorac Oncol 3:277-82. 2008
    ..There is limited information on risk factors for treatment-related pneumonitis in esophageal cancer patients...
  23. ncbi request reprint Intrathoracic patterns of failure for non-small-cell lung cancer with positron-emission tomography/computed tomography-defined target delineation
    Ann Hoge Klopp
    Department of Radiation Oncology, The University of Texas M D Anderson Cancer Center, Houston, TX 77030, USA
    Int J Radiat Oncol Biol Phys 69:1409-16. 2007
    ..We investigated patterns of treatment failure in patients treated to a PET-defined radiotherapy target and evaluated the effect of standardized uptake value (SUV) on recurrence after radiotherapy...
  24. ncbi request reprint Variations in energy spectra and water-to-material stopping-power ratios in three-dimensional conformal and intensity-modulated photon fields
    Si Young Jang
    Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, Texas 77030, USA
    Med Phys 34:1388-97. 2007
    ..Thus, spatial variations of the photon- and electron-energy spectra should be considered as important factors in 3D-CRT and IMRT dosimetry...
  25. pmc Analysis of radiation pneumonitis risk using a generalized Lyman model
    Susan L Tucker
    Department of Bioinformatics and Computational Biology, The University of Texas M D Anderson Cancer Center, Houston, Texas 77030, USA
    Int J Radiat Oncol Biol Phys 72:568-74. 2008
    ....
  26. ncbi request reprint Verification of the accuracy of a photon dose-calculation algorithm
    Kent A Gifford
    Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, Houston, Texas, USA
    J Appl Clin Med Phys 3:26-45. 2002
    ....
  27. ncbi request reprint PTV margin determination in conformal SRT of intracranial lesions
    Brent C Parker
    Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, Texas 77030, USA
    J Appl Clin Med Phys 3:176-89. 2002
    ....
  28. ncbi request reprint Dose and volume reduction for normal lung using intensity-modulated radiotherapy for advanced-stage non-small-cell lung cancer
    Hasan Murshed
    Division of Radiation Oncology, University of Texas M D Anderson Cancer Center, Houston, TX 77030, USA
    Int J Radiat Oncol Biol Phys 58:1258-67. 2004
    ....
  29. ncbi request reprint Dose-volume response analyses of late rectal bleeding after radiotherapy for prostate cancer
    Susan L Tucker
    Department of Biostatistics and Applied Mathematics, University of Texas M D Anderson Cancer Center, Houston, TX 77030, USA
    Int J Radiat Oncol Biol Phys 59:353-65. 2004
    ..To compare the fits of various normal tissue complication probability (NTCP) models to a common set of late rectal toxicity data, with the aim of identifying the best model for predicting late rectal injury after irradiation...
  30. ncbi request reprint Cluster models of dose-volume effects
    Howard D Thames
    Department of Biostatistics, The University of Texas M D Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA
    Int J Radiat Oncol Biol Phys 59:1491-504. 2004
    ..Describe cluster models, normal-tissue complication probability models in which both the number and the spatial location of radiation-sterilized functional subunits play a role in defining complication probability...
  31. ncbi request reprint Evaluation of internal lung motion for respiratory-gated radiotherapy using MRI: Part I--correlating internal lung motion with skin fiducial motion
    Nicholas Koch
    Division of Radiation Oncology, The University of Texas M D Anderson Cancer Center, Houston, TX, USA
    Int J Radiat Oncol Biol Phys 60:1459-72. 2004
    ..To measure the internal lung motion due to respiration using magnetic resonance images (MRIs); to evaluate the correlation between lung motion and skin surface motion and the reliability of tracking lung motion with external fiducials...
  32. ncbi request reprint Comparison of rectal dose-wall histogram versus dose-volume histogram for modeling the incidence of late rectal bleeding after radiotherapy
    Susan L Tucker
    Department of Biostatistics and Applied Mathematics, The University of Texas M D Anderson Cancer Center, Houston, TX 77030, USA
    Int J Radiat Oncol Biol Phys 60:1589-601. 2004
    ..To compare the fits of normal-tissue complication probability (NTCP) models based on rectal dose-wall histograms (DWHs) vs. dose-volume histograms (DVHs) when the two are used to analyze a common set of late rectal toxicity data...
  33. ncbi request reprint Interactively exploring optimized treatment plans
    Isaac Rosen
    Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, Houston, TX 77030, USA
    Int J Radiat Oncol Biol Phys 61:570-82. 2005
    ....
  34. ncbi request reprint Reference photon dosimetry data and reference phase space data for the 6 MV photon beam from varian clinac 2100 series linear accelerators
    Sang Hyun Cho
    Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, Houston, Texas 77030, USA
    Med Phys 32:137-48. 2005
    ..g., 1% or 1 mm for depth dose). A complete set of the RPDD and RPSD from the current study is available from the RPC website (http://rpc.mdanderson.org) or via mass storage media such as DVD or CD-ROM upon request...
  35. ncbi request reprint Dosimetric benefits of respiratory gating: a preliminary study
    Laura E Butler
    Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, Houston, Texas 77030, USA
    J Appl Clin Med Phys 5:16-24. 2004
    ..Respiratory gating of thoracic radiation treatments can often improve the quality of the treatment plan, but it may not be possible to determine which patients may benefit from gating prior to performing the actual treatment planning...
  36. ncbi request reprint Intensity modulated radiation therapy and proton radiotherapy for non-small cell lung cancer
    Joe Y Chang
    Department of Radiation Oncology, The University of Texas M D Anderson Cancer Center, Houston, TX 77030, USA
    Curr Oncol Rep 7:255-9. 2005
    ..We are conducting preclinical and clinical studies for imaging-guided proton radiotherapy in NSCLC. In this paper, we discuss the preliminary data, IMRT treatment guidelines, and ongoing studies for proton therapy in NSCLC...
  37. ncbi request reprint Monte Carlo calculations of the absorbed dose and energy dependence of plastic scintillators
    A Sam Beddar
    Department of Radiation Physics, Division of Radiation Oncology, The University of Texas M D Anderson Cancer Center, Houston, Texas 77030, USA
    Med Phys 32:1265-9. 2005
    ..98 over the entire energy range of interest. These results confirm the water equivalence of the plastic scintillation detector and are in very good agreement with earlier results obtained using Burlin cavity theory...
  38. ncbi request reprint Intensity-modulated radiation therapy for mesothelioma: impact of multileaf collimator leaf width and pencil beam size on planning quality and delivery efficiency
    X Ronald Zhu
    Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, Houston, TX 77030, USA
    Int J Radiat Oncol Biol Phys 62:1525-34. 2005
    ....
  39. ncbi request reprint Feasibility of using intensity-modulated radiotherapy to improve lung sparing in treatment planning for distal esophageal cancer
    Anurag Chandra
    Department of Radiation Oncology, University of Texas, M D Anderson Cancer Center, Houston, USA
    Radiother Oncol 77:247-53. 2005
    ..To evaluate the feasibility whether intensity-modulated radiotherapy (IMRT) can be used to reduce doses to normal lung than three-dimensional conformal radiotherapy (3 DCRT) in treating distal esophageal malignancies...