Associate Professors
GAO Hewei
Associate Professor

PhD

Tel: +86-10 62784830

Email: hwgao at tsinghua.edu.cn

Educational Background

2003.09 - 2008, Department of Engineering Physics, Tsinghua University, PhD

1999.09 – 2003.07, Department of Engineering Physics, Tsinghua University, BS


Work Experience

2018.03 - present, Department of Engineering Physics, Tsinghua University, Associate Professor

2016.07 – 2018.03, Reflexion Medical, CA, USA, Senior Scientist

2013.09 – 2016.07, GE Healthcare, WI, USA, Senior Scientist

2010.10 – 2013.09, GE Global Research, NY, USA, CT Physicist

2008.10 – 2010.09, Stanford University, CA, USA, Postdoctoral Fellow


Teaching work

Signals and Systems (undergraduate)

Advisor for PhD candidates (4), postdocs (3), and undergraduate thesis project (12)


Research Field

Scientific research and technology innovations in X-ray/CT imaging and its applications to medical diagnosis, security inspection, and image guidance.


Research Situation

Principal investigator of the following projects:

2023 - 2025, C-Arm Spectral CT Technology Innovation for Precision Brain Imaging in Interventional Diagnostic and Treatment, The National Key R&D Program Key Program

2021 - 2024, Oral Cone-Beam CT Spectral Imaging, The National Natural Science Foundation of China (NSFC) Key Program of Joint Fund

2021 - 2024, Quantitative Cone-Beam CT Imaging Using Spatial-Temporal Combined Spectral Modulation, NSFC General Program

2019 - 2022, Wide-coverage multi-energy CT imaging, Startup Funding for young scholar

2018 - 2021, Novel CT imaging for image guidance, Startup funding for new faculty


Key contributor to the following projects:

2022-2025, R&D of ultra-fast high-definition Stationary CT equipment for customs package inspection, The National Key R&D Program Key Program

2016 - 2018, Biology-guiding Radiotherapy, New product R&D, Reflexion Medical, CA, USA

2013 - 2016, Revolution CT GSI Xtream, New product R&D, GE Healthcare, WI, USA

2010 - 2013, Revolution CT, New technology R&D, GE Global Research, NY, USA

2010 - 2013, Cardiac CT: advanced architectures and algorithms, NIH Grant, USA

2008 - 2010, Efficient scatter correction, NIH Grant, USA


Academic Achievements

Selected publications

Chengpeng Wu, Yuxiang Xing, Li Zhang*, Zhiqiang Chen, Xiaohua Zhu, Xi Zhang, and Hewei Gao*, “Fluence adaptation for contrast-based dose optimization in x-ray phase-contrast imaging,” Medical Physics, 48(10): 6106-6120, 2021.

Chengpeng Wu, Yuxiang Xing, Li Zhang*, Xinbin Li, Xiaohua Zhu, Xi Zhang, and Hewei Gao*, “Fourier-based interpretation and noise analysis of the moments of small-angle x-ray scattering in grating-based x-ray phase contrast imaging,” Optics Express, 29(14): 21902-21920, 2021.

Hewei Gao*, Tao Zhang, N. Robert Bennett, and Adam S. Wang, “Densely sampled spectral modulation for x-ray CT using a stationary modulator with flying focal spot: a conceptual and feasibility study of scatter and spectral correction,” Medical Physics, 48(4): 1557-1570, 2021.

Tao Zhang, Zhiqiang Chen, Hao Zhou, N. Robert Bennett, Adam S. Wang, and Hewei Gao*, “An analysis of scatter characteristics in x-ray CT spectral correction,” Physics in Medicine and Biology, 66(7): 075003, 2021.

Tao Zhang, Li Zhang, Zhiqiang Chen*, Yuxiang Xing, and Hewei Gao*, “Fourier Properties of Symmetric-Geometry Computed Tomography and Its Linogram Reconstruction with Neural Network,” IEEE Transactions on Medical Imaging, 39(12): 4445-4457, 2020.

Tao Zhang, Yuxiang Xing, Li Zhang, Xin Jin, Hewei Gao*, and Zhiqiang Chen*, “Stationary computed tomography with source and detector in linear symmetric geometry: Direct filtered backprojection reconstruction,” Medical Physics, 47(5): 2222-2236, 2020.

Chengpeng Wu, Li Zhang, Zhiqiang Chen, Yuxiang Xing, Xinbin Li, Xiaohua Zhu, Carolina Arboleda, Zhentian Wang, and Hewei Gao*, “The trigonometric orthogonality of phase-stepping curves in grating-based x-ray phase-contrast imaging: Integral property and its implications for noise optimization,” Medical Physics, 47(3): 1189-1198, 2020.

Hewei Gao*, Li Zhang, Rainer Grimmer, and Rebecca Fahrig, “Physics-based spectral compensation algorithm for X-ray CT with primary modulator,” Physics in Medicine and Biology, 64(12): 125006, 2019.

Hewei Gao*, Lei Zhu, and Rebecca Fahrig, “Virtual Scatter Modulation for X-ray CT Scatter Correction Using Primary Modulator,” Journal of X-ray Science and Technology, 25(6):869-885, 2017.

Hewei Gao*, Li Zhang*, Zhiqiang Chen, Yuxiang Xing, Hui Xue, and Jianping Cheng, “Straight-Line-Trajectory-Based X-Ray Tomographic Imaging for Security Inspections: System Design, Image Reconstruction and Preliminary Results,” IEEE Transactions on Nuclear Science, 60(5):3955-3968, 2013.

Hewei Gao*, Lei Zhu, and Rebecca Fahrig, “Modulator design for X-ray scatter correction using primary modulation: Material selection,” Medical Physics, 37(8):4029-4037, 2010.

Hewei Gao*, Rebecca Fahrig, N. Robert Bennett, Mingshan Sun, Josh Star-Lack, and Lei Zhu, “Scatter correction method for X-ray CT using primary modulation: Phantom studies,” Medical Physics, 37(2):934-946, 2010.

Hewei Gao*, Li Zhang*, Yuxiang Xing, Zhiqiang Chen, and Jianping Cheng, “An improved form of linogram algorithm for image reconstruction,” IEEE Transactions on Nuclear Science, 55(1):552-559, 2008.

Hewei Gao*, Li Zhang, Zhiqiang Chen, Yuxiang Xing, Jianping Cheng, and Yigang Yang, “Application of X-ray CT to liquid security inspection: system analysis and beam hardening correction,” Nuclear Instruments & Methods in Physics Research Section A, 579(1):395-399, 2007.

Hewei Gao*, Li Zhang, Yuxiang Xing, Zhiqiang Chen, Jian Zhang, and Jianping Cheng, “Volumetric imaging from a multisegment straight-line-trajectory and a practical reconstruction algorithm,” Optical Engineering, 46(7):077004, 2007.

Hewei Gao*, Li Zhang, Zhiqiang Chen, Yuxiang Xing, Jianping Cheng, and Zhihua Qi, “Direct filtered-backprojection-type reconstruction from a straight-line trajectory,” Optical Engineering, 46(5):057003, 2007.

Hewei Gao*, Li Zhang*, Zhiqiang Chen, Yuxiang Xing, and Shuanglei Li, “Beam hardening correction for middle-energy industrial computerized tomography,” IEEE Transactions on Nuclear Science, 53(5):2796-2807, 2006.


All publications in my Google Scholar academic profile:

https://scholar.google.com/citations?user=JOl6xOoAAAAJ&hl=zh-CN&oi=ao


Part-time Academic Job

2023 - present, Associate Editor of Medical Physics

2022 - present, CT Theory and Applications Committee of CSS

2022 - present, Youth Committee of CSS

2021 - present, Editorial Board of CT Theory and Application

2021 - present, Board of Directors of Chinese Society for Stereology (CSS)

2021/2023, Scientific committee of Fully3D Meeting

2020 - present, Intelligent Imaging Committee of CSS

2009 - present, The American Association of Physicists in Medicine (AAPM), member

2005 - present, Reviewers for international journals such as Medical Physics, Physics in Medicine and Biology, IEEE Transactions on Nuclear Science.


Award honors

2022, Excellent B.S. Thesis Advisor of Beijing

2018, Outstanding Young Talents Program of China

2008, Excellent Doctoral Dissertation of Tsinghua University (Second Prize)


    • Address : Department of Engineering Physics, Tsinghua University (Liu Qinglou)
    • Zip code:100084
    • Phone:010-62785727
    • E-mail:gwbgs@mail.tsinghua.edu.cn
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