Valen E Johnson

Summary

Affiliation: The University of Texas
Country: USA

Publications

  1. pmc Statistical analysis of the National Institutes of Health peer review system
    Valen E Johnson
    University of Texas M D Anderson Cancer Center, 1400 Pressler Street, Unit 1411, Houston, TX 77030, USA
    Proc Natl Acad Sci U S A 105:11076-80. 2008
  2. doi request reprint Bayesian design of single-arm phase II clinical trials with continuous monitoring
    Valen E Johnson
    Department of Biostatistics, M D Anderson Cancer Center, Houston, TX 77030, USA
    Clin Trials 6:217-26. 2009
  3. ncbi request reprint Reproducibility and comparison of DCE-MRI and DCE-CT perfusion parameters in a rat tumor model
    Chaan S Ng
    Department of Radiology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, Texas 77030, USA
    Technol Cancer Res Treat 11:279-88. 2012
  4. pmc Prognostic value of symptom burden for overall survival in patients receiving chemotherapy for advanced nonsmall cell lung cancer
    Xin Shelley Wang
    Department of Symptom Research, The University of Texas M D Anderson Cancer Center, Houston, TX 77030, USA
    Cancer 116:137-45. 2010
  5. pmc Impact of cultural and linguistic factors on symptom reporting by patients with cancer
    Xin Shelley Wang
    Department of Symptom Research, The University of Texas M D Anderson Cancer Center, 1515 Holcombe Blvd, Unit 1450, Houston, TX 77030, USA
    J Natl Cancer Inst 102:732-8. 2010
  6. ncbi request reprint Evaluation of image registration spatial accuracy using a Bayesian hierarchical model
    Suyu Liu
    Department of Biostatistics, MD Anderson Cancer Center, Houston, Texas, U S A
    Biometrics 70:366-77. 2014
  7. doi request reprint Semiautomated motion correction of tumors in lung CT-perfusion studies
    Adam Chandler
    Department of Imaging Physics, MD Anderson Cancer Center, 1400 Pressler Street, Houston, TX 77030, USA
    Acad Radiol 18:286-93. 2011
  8. pmc Bayesian adaptive phase II screening design for combination trials
    Chunyan Cai
    Biostatistics Epidemiology Research Design Core, Center for Clinical and Translational Sciences, The University of Texas Health Science Center at Houston, Houston, TX, USA
    Clin Trials 10:353-62. 2013
  9. pmc Goodness-of-fit diagnostics for Bayesian hierarchical models
    Ying Yuan
    Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
    Biometrics 68:156-64. 2012
  10. ncbi request reprint Imaging characteristics of hyperfunctioning parathyroid adenomas using multiphase multidectector computed tomography: a quantitative and qualitative approach
    Thinh H Vu
    Department of Radiology, The University of Texas M D Anderson Cancer Center, Houston, TX, USA
    J Comput Assist Tomogr 35:560-7. 2011

Collaborators

Detail Information

Publications17

  1. pmc Statistical analysis of the National Institutes of Health peer review system
    Valen E Johnson
    University of Texas M D Anderson Cancer Center, 1400 Pressler Street, Unit 1411, Houston, TX 77030, USA
    Proc Natl Acad Sci U S A 105:11076-80. 2008
    ..Viewed more broadly, the methodology proposed in this article provides a general framework for the analysis of data collected interactively from expert panels through the use of the Delphi method and related procedures...
  2. doi request reprint Bayesian design of single-arm phase II clinical trials with continuous monitoring
    Valen E Johnson
    Department of Biostatistics, M D Anderson Cancer Center, Houston, TX 77030, USA
    Clin Trials 6:217-26. 2009
    ..Such designs also introduce an unnecessary element of subjectivity in the interpretation of trial results...
  3. ncbi request reprint Reproducibility and comparison of DCE-MRI and DCE-CT perfusion parameters in a rat tumor model
    Chaan S Ng
    Department of Radiology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, Texas 77030, USA
    Technol Cancer Res Treat 11:279-88. 2012
    ..DCE-MRI and DCE-CT biomarkers of tumor perfusion have similar reproducibilities suggesting that they may have comparable utility, but their derived parameter values are not equivalent...
  4. pmc Prognostic value of symptom burden for overall survival in patients receiving chemotherapy for advanced nonsmall cell lung cancer
    Xin Shelley Wang
    Department of Symptom Research, The University of Texas M D Anderson Cancer Center, Houston, TX 77030, USA
    Cancer 116:137-45. 2010
    ..However, translating patient-reported outcomes into useful prognostic information for individual patients has been problematic...
  5. pmc Impact of cultural and linguistic factors on symptom reporting by patients with cancer
    Xin Shelley Wang
    Department of Symptom Research, The University of Texas M D Anderson Cancer Center, 1515 Holcombe Blvd, Unit 1450, Houston, TX 77030, USA
    J Natl Cancer Inst 102:732-8. 2010
    ..In multinational clinical trials, cultural and linguistic variations in patient-reported outcomes instruments could confound the interpretation of study results...
  6. ncbi request reprint Evaluation of image registration spatial accuracy using a Bayesian hierarchical model
    Suyu Liu
    Department of Biostatistics, MD Anderson Cancer Center, Houston, Texas, U S A
    Biometrics 70:366-77. 2014
    ..We develop a Gibbs sampling algorithm to efficiently fit our models to high-dimensional data, and apply the proposed method to analyze an image dataset obtained from a 4D thoracic CT study. ..
  7. doi request reprint Semiautomated motion correction of tumors in lung CT-perfusion studies
    Adam Chandler
    Department of Imaging Physics, MD Anderson Cancer Center, 1400 Pressler Street, Houston, TX 77030, USA
    Acad Radiol 18:286-93. 2011
    ..To compare the relative performance of one-dimensional (1D) manual, rigid-translational, and nonrigid registration techniques to correct misalignment of lung tumor anatomy acquired from computed tomography perfusion (CTp) datasets...
  8. pmc Bayesian adaptive phase II screening design for combination trials
    Chunyan Cai
    Biostatistics Epidemiology Research Design Core, Center for Clinical and Translational Sciences, The University of Texas Health Science Center at Houston, Houston, TX, USA
    Clin Trials 10:353-62. 2013
    ....
  9. pmc Goodness-of-fit diagnostics for Bayesian hierarchical models
    Ying Yuan
    Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
    Biometrics 68:156-64. 2012
    ..The proposed methodology is illustrated in a clinical application; an application to discrete data is described in supplementary material...
  10. ncbi request reprint Imaging characteristics of hyperfunctioning parathyroid adenomas using multiphase multidectector computed tomography: a quantitative and qualitative approach
    Thinh H Vu
    Department of Radiology, The University of Texas M D Anderson Cancer Center, Houston, TX, USA
    J Comput Assist Tomogr 35:560-7. 2011
    ..The objective of the study was to characterize the enhancement pattern of hyperfunctioning parathyroid adenomas on multiphase multidetector computed tomography (CT) or 4-dimensional CT...
  11. pmc Perfusion CT assessment of tissue hemodynamics following hepatic arterial infusion of increasing doses of angiotensin II in a rabbit liver tumor model
    Kenneth C Wright
    Department of Diagnostic Radiology, Section of Interventional Radiology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX 77030 4009, USA
    Radiology 260:718-26. 2011
    ..To investigate the effects of increasing doses of angiotensin II on hepatic hemodynamics in the normal rabbit liver and in hepatic VX2 tumors by using dynamic contrast material-enhanced perfusion computed tomography (CT)...
  12. ncbi request reprint In vivo CT dosimetry during CT colonography
    Jonathon W Mueller
    1 Department of Imaging Physics, The University of Texas M D Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX 77030
    AJR Am J Roentgenol 202:703-10. 2014
    ..The purpose of this study was to develop a method of measuring rectal radiation dose in vivo during CT colonography (CTC) and assess the accuracy of size-specific dose estimates (SSDEs) relative to that of in vivo dose measurements...
  13. ncbi request reprint A Bayesian hierarchical approach to multirater correlated ROC analysis
    Timothy D Johnson
    Department of Biostatistics, School of Public Health, University of Michigan, Ann Arbor, MI 48109 2029, USA
    Stat Med 25:1858-71. 2006
    ..Thus, our methodology has important implications for increasing the power of analyses based on ROC data collected from an available study population...
  14. pmc Visualization and quantification of intraperitoneal tumors by in vivo computed tomography using negative contrast enhancement strategy in a mouse model of ovarian cancer
    Murtuza Rampurwala
    Diagnostic Radiology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
    Transl Oncol 2:96-106. 2009
    ..0001, n = 15). Thus, CT using negative contrast enhancement strategy allows visualization and quantification of IP tumors. Such a strategy will also enable anatomic localization of functional signal for combination/molecular imaging...
  15. ncbi request reprint A framework for evaluation of deformable image registration spatial accuracy using large landmark point sets
    Richard Castillo
    Department of Imaging Physics, The University of Texas M D Anderson Cancer Center, Houston, TX, USA
    Phys Med Biol 54:1849-70. 2009
    ..This study demonstrates that landmark pairs can be used to assess DIR spatial accuracy within a narrow uncertainty range...
  16. pmc Radiation pneumonitis: correlation of toxicity with pulmonary metabolic radiation response
    Justin P Hart
    Department of Radiation Oncology, The University of Texas M D Anderson Cancer Center, Houston, TX 77030, USA
    Int J Radiat Oncol Biol Phys 71:967-71. 2008
    ..To characterize the relationship between radiation pneumonitis (RP) clinical symptoms and pulmonary metabolic activity on post-treatment [(18)F]-fluorodeoxyglucose positron emission tomography (FDG-PET)...
  17. ncbi request reprint Assessing the Symptoms of Cancer Using Patient-Reported Outcomes (ASCPRO): searching for standards
    Charles S Cleeland
    Department of Symptom Research, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
    J Pain Symptom Manage 39:1077-85. 2010
    ....