Xizeng Wu

Summary

Affiliation: University of Alabama at Birmingham
Country: USA

Publications

  1. ncbi Clinical implementation of x-ray phase-contrast imaging: theoretical foundations and design considerations
    Xizeng Wu
    Department of Radiology, University of Alabama at Birmingham, Birmingham, Alabama 35233, USA
    Med Phys 30:2169-79. 2003
  2. ncbi X-ray phase-attenuation duality and phase retrieval
    Xizeng Wu
    Department of Radiology, University of Alabama at Birmingham, 619 19th Street South, Birmingham, Alabama 35233, USA
    Opt Lett 30:379-81. 2005
  3. ncbi Phase retrieval from one single phase contrast x-ray image
    Xizeng Wu
    Department of Radiology, University of Alabama at Birmingham, Birmingham, AL 35233, USA
    Opt Express 17:11187-96. 2009
  4. ncbi Phase-space evolution of x-ray coherence in phase-sensitive imaging
    Xizeng Wu
    Department of Radiology, University of Alabama at Birmingham, Birmingham, Alabama 35233, USA
    Appl Opt 47:E44-52. 2008
  5. ncbi Phase-contrast X-ray tomography: contrast mechanism and roles of phase retrieval
    Xizeng Wu
    Department of Radiology, University of Alabama at Birmingham, 619 19th Street South, Birmingham, AL 35233, USA
    Eur J Radiol 68:S8-12. 2008
  6. ncbi Clarification of aspects in in-line phase-sensitive x-ray imaging
    Xizeng Wu
    Department of Radiology, University of Alabama at Birmingham, Birmingham, Alabama 35233, USA
    Med Phys 34:737-43. 2007
  7. ncbi Phase-space formulation for phase-contrast x-ray imaging
    Xizeng Wu
    Department of Radiology, University of Alabama at Birmingham, Birmingham, Alabama 35233, USA
    Appl Opt 44:5847-54. 2005
  8. ncbi An experimental method of determining relative phase-contrast factor for x-ray imaging systems
    Xizeng Wua
    Department of Radiology, University of Alabama at Birmingham, Birmingham, Alabama 35233, USA
    Med Phys 31:997-1002. 2004
  9. ncbi A new theory of phase-contrast x-ray imaging based on Wigner distributions
    Xizeng Wu
    Department of Radiology, University of Alabama at Birmingham, Birmingham, Alabama 35233, USA
    Med Phys 31:2378-84. 2004
  10. ncbi An attenuation-partition based iterative phase retrieval algorithm for in-line phase-contrast imaging
    Aimin Yan
    Department of Radiology, University of Alabama at Birmingham, Birmingham, AL 35233, USA
    Opt Express 16:13330-41. 2008

Research Grants

  1. Phase-sensitive x-ray breast tomosynthesis
    Xizeng Wu; Fiscal Year: 2010

Collaborators

  • Hong Liu
  • Aimin Yan
  • Da Zhang
  • Feng Gao
  • Frederick J Larke
  • Thomas K Nishino
  • Xizeng Wua
  • Michael M McNitt-Gray
  • Randell L Kruger
  • Phillip F Judy
  • Christopher H Cagnon
  • Michael J Flynn
  • Dianna D Cody
  • Raleigh F Johnson

Detail Information

Publications19

  1. ncbi Clinical implementation of x-ray phase-contrast imaging: theoretical foundations and design considerations
    Xizeng Wu
    Department of Radiology, University of Alabama at Birmingham, Birmingham, Alabama 35233, USA
    Med Phys 30:2169-79. 2003
    ..The results of phantom experiments were also presented which validated the theoretical analysis and computer simulations...
  2. ncbi X-ray phase-attenuation duality and phase retrieval
    Xizeng Wu
    Department of Radiology, University of Alabama at Birmingham, 619 19th Street South, Birmingham, Alabama 35233, USA
    Opt Lett 30:379-81. 2005
    ..The phase-retrieval formula based on a single phase-contrast image of inhomogeneous soft tissue is derived and presented. We show the striking enhancement of the tissue contrast in simulated phase images that this new approach produces...
  3. ncbi Phase retrieval from one single phase contrast x-ray image
    Xizeng Wu
    Department of Radiology, University of Alabama at Birmingham, Birmingham, AL 35233, USA
    Opt Express 17:11187-96. 2009
    ..This new phase retrieval formula lays the foundation for implementing high-resolution phase-sensitive 3D imaging of soft tissue objects...
  4. ncbi Phase-space evolution of x-ray coherence in phase-sensitive imaging
    Xizeng Wu
    Department of Radiology, University of Alabama at Birmingham, Birmingham, Alabama 35233, USA
    Appl Opt 47:E44-52. 2008
    ..The theory has been applied to x-ray Talbot interferometric imaging as well. The peak coherence condition derived reveals new insights into three-grating-based Talbot-interferometric imaging and gratings-based x-ray dark-field imaging...
  5. ncbi Phase-contrast X-ray tomography: contrast mechanism and roles of phase retrieval
    Xizeng Wu
    Department of Radiology, University of Alabama at Birmingham, 619 19th Street South, Birmingham, AL 35233, USA
    Eur J Radiol 68:S8-12. 2008
    ..A phase tomography reconstruction formula for soft tissue imaging, which requires just a single phase-contrast image per projection for reconstruction, is presented...
  6. ncbi Clarification of aspects in in-line phase-sensitive x-ray imaging
    Xizeng Wu
    Department of Radiology, University of Alabama at Birmingham, Birmingham, Alabama 35233, USA
    Med Phys 34:737-43. 2007
    ....
  7. ncbi Phase-space formulation for phase-contrast x-ray imaging
    Xizeng Wu
    Department of Radiology, University of Alabama at Birmingham, Birmingham, Alabama 35233, USA
    Appl Opt 44:5847-54. 2005
    ..The results of our computer modeling and simulations show how the formula can provide design guidelines and optimal parameters for clinical x-ray phase-contrast imaging systems...
  8. ncbi An experimental method of determining relative phase-contrast factor for x-ray imaging systems
    Xizeng Wua
    Department of Radiology, University of Alabama at Birmingham, Birmingham, Alabama 35233, USA
    Med Phys 31:997-1002. 2004
    ..The results show the significant effects of x-ray beam hardening on the visibility of phase-contrast, and reveal a new dimension in seeking optimal techniques for x-ray phase-contrast imaging...
  9. ncbi A new theory of phase-contrast x-ray imaging based on Wigner distributions
    Xizeng Wu
    Department of Radiology, University of Alabama at Birmingham, Birmingham, Alabama 35233, USA
    Med Phys 31:2378-84. 2004
    ..The role of detector resolution in phase visibility has been clarified as well. Computer simulations based on the new theory were conducted and optimal design parameters were derived for phase-contrast mammography systems...
  10. ncbi An attenuation-partition based iterative phase retrieval algorithm for in-line phase-contrast imaging
    Aimin Yan
    Department of Radiology, University of Alabama at Birmingham, Birmingham, AL 35233, USA
    Opt Express 16:13330-41. 2008
    ..Phase retrieval results from experimental images show that this new iterative algorithm is fast and robust, and it has good potential for medical x-ray imaging applications...
  11. ncbi Performance analysis of the attenuation-partition based iterative phase retrieval algorithm for in-line phase-contrast imaging
    Aimin Yan
    Department of Radiology, University of Alabama at Birmingham, Birmingham, AL 35233, USA
    Opt Express 18:16074-89. 2010
    ..These results suggest the significance of the proposed algorithm for future medical applications with the x-ray phase contrast imaging technique...
  12. ncbi Robustness of phase retrieval methods in X-ray phase contrast imaging: a comparison
    Aimin Yan
    Department of Radiology, University of Alabama, Birmingham, AL 35233, USA
    Med Phys 38:5073-80. 2011
    ..This work is to compare the robustness of two phase retrieval methods by analyzing the phase maps retrieved from the experimental images of a phantom...
  13. ncbi X-ray phase-shifts-based method of volumetric breast density measurement
    Xizeng Wu
    Department of Radiology, University of Alabama at Birmingham, Birmingham, Alabama 35233
    Med Phys 39:4239-44. 2012
    ..The simulation results numerically validated the proposed method as a novel method of breast density measurement with good accuracies...
  14. ncbi Spin relaxation laws for quantitative MRI of hyperpolarized spins
    Xizeng Wu
    Dept. of Radiol, Alabama Univ, Birmingham, AL 35233, USA
    Conf Proc IEEE Eng Med Biol Soc 1:1911-5. 2006
    ..The potential applications of the findings in quantitative MRI with hyperpolarized helium and xenon are discussed...
  15. ncbi Estimated radiation dose associated with low-dose chest CT of average-size participants in the National Lung Screening Trial
    Frederick J Larke
    Department of Radiology, University of Colorado at Denver, Aurora, 80045, USA
    AJR Am J Roentgenol 197:1165-9. 2011
    ..The objective of our study was to determine the distribution of effective dose associated with a single low-dose CT chest examination of average-size participants in the National Lung Screening Trial. Organ doses were also investigated...
  16. ncbi Thickness of molybdenum filter and squared contrast-to-noise ratio per dose for digital mammography
    Thomas K Nishino
    Department of Radiology, University of Texas Medical Branch, 2.448 Clinical Sciences Bldg, 301 University Blvd, Galveston, TX 77555-0709, USA
    AJR Am J Roentgenol 185:960-3. 2005
    ..CONCLUSION: Increasing Mo filter thickness from 30 to 60 microm can increase lesion-tissue squared CNR per dose by 14% with a tolerable increase in the duration of exposure...
  17. ncbi Preliminary feasibility study of an in-line phase contrast X-ray imaging prototype
    Da Zhang
    Center for Bioengineering and School of Electrical and Computer Engineering, University of Oklahoma, Norman, OK 73019, USA
    IEEE Trans Biomed Eng 55:2249-57. 2008
    ..In both pairs of comparison under our experimental conditions, the phase contrast imaging mode exhibited improved image quality as compared to the conventional mode, which further supported the feasibility of the prototype...
  18. ncbi Impact of additive noise on system performance of a digital X-ray imaging system
    Da Zhang
    Center for Bioengineering, School of Electrical and Computer Engineering, University of Oklahoma, Norman, OK 73019, USA
    IEEE Trans Biomed Eng 54:69-73. 2007
    ..For example, at an exposure of 20 s, the DQE(O) is approximately 0.22, dropping to 0.11 at 3 lp/mm and to 0.022 at 8 lp/mm...
  19. ncbi DQE analysis on a dual detector phase x-ray imaging system
    Da Zhang
    Center for Bioengineering and School of Electrical and Computer Engineering, University of Oklahoma, Norman, OK 73019, USA
    Phys Med Biol 53:5165-76. 2008
    ..The study validated the design of the dual detection configuration for phase x-ray imaging, which has the potential for improving the accuracy of diagnostics at clinically acceptable radiation doses...

Research Grants1

  1. Phase-sensitive x-ray breast tomosynthesis
    Xizeng Wu; Fiscal Year: 2010
    ..The project seeks to develop a prototype of the phase sensitive breast tomosynthesis for greatly enhancing the sensitivity and specificity of breast cancer detection and achieving many-fold reduction of radiation doses to breast. ..