Chaur-Dong Hsu, MD, MPH, FACOG
Ge Wang, PhD
Clark & Crossan Chair Professor
  • Director of Biomedical Imaging Center/Cluster (BIC)
    Department of Biomedical Engineering
    Rensselaer Polytechnic Institute
    Troy, New York, USA
    Phone: + (518) 276-3726, E-mail:




Dept. of ECE, Xidian Univ., P. R. China



Institute of Remote Sensing Applications, Graduate School of Academia Sinica



Dept. of ECE, State Univ. of New York at Buffalo, USA



Dept. of ECE, State Univ. of New York at Buffalo, USA




Dept. of ECE, Graduate School of Academia Sinica, Beijing, China

Assistant Professor


Dept. of ECE, Graduate School of Academia Sinica, Beijing, China

Research Assistant


Dept. of Geog. & Environmental Studies, Tasmania Univ., Australia

Research Assistant


Dept. of ECE, State Univ. of New York at Buffalo, Buffalo, USA



Mallinckrodt Institute of Radiology, Washington Univ., USA

Assistant Professor


Mallinckrodt Institute of Radiology, Washington Univ., USA

Associate. Professor


Dept. of Radiology, Univ. of Iowa, USA



Dept. of Radiology, College of Medicine, Univ. of Iowa, USA

Director of the CT Lab


Dept. of Radiology, Univ. of Iowa

Adjunct Professor


Dept. of BME (00-06), Dept. of Math (02-06), Dept. of ECE (02-06), Dept. of Civil Engineering (04-06), Univ. of Iowa, USA

Director of the Center for X-ray & Optical Tomography


Univ. of Iowa, USA

Pritchard Professor


College of Engineering (9 months), Virginia Tech, USA

Adjunct Professor


Regenerative Medicine, Wake Forest Institute of Regenerative Medicine, USA

Director of the ICTAS


Virginia Tech, USA

Clark & Crossan Endowed Chair Professor


Rensselaer Polytechnic Institute, USA

Director of Biomedical Imaging Center/Cluster


Rensselaer Polytechnic Institute, USA



Ge Wang is currently the Clark & Crossan Endowed Chair Professor and the Director of the Biomedical Imaging Center, Rensselaer Polytechnic Institute, Troy, NY, USA. He authored the pioneering paper on the first spiral/helical cone-beam computed tomography (CT) algorithm in 1991. Spiral/helical cone-beam/multi-slice CT is constantly used in almost all hospitals worldwide. There are over 100 million CT scans yearly with a majority in the spiral/helical cone-beam/multi-slice mode. He and his collaborators published the first paper on bioluminescence tomography, creating a new area of optical molecular tomography. His group published the first papers on interior tomography and omni-tomography for grand fusion of all relevant tomographic modalities (“all-in-one”) to acquire different datasets simultaneously (“all-at-once”) with simultaneous CT-MRI as an example. His results were featured in Nature, Science, and PNAS, and recognized with academic awards. He wrote over 420 journal papers, receiving a high number of citations. His team has been in collaboration with world-class groups, and continuously well-funded by federal agencies. His interest includes x-ray CT, optical molecular tomography, multimodality imaging, bibliometrics, and deep learning. He is the Lead Guest Editor of the four IEEE Transactions on Medical Imaging Special Issues on cone-beam CT, molecular imaging, compressed sensing, and spectral CT respectively, the founding Editor-in-Chief of the International Journal of Biomedical Imaging, and an Associate Editor of the IEEE Transactions on Medical Imaging, IEEE Access, Medical Physics, and Journal of X-ray Science and Technology. He is a fellow of the SPIE, OSA, AIMBE, AAPM, and AAAS.


Research Interest

  • Cone-beam Spiral CT
  • Fan-beam Spiral CT
  • Interior Tomography & Omni-Tomography
  • Bioluminescence Tomography
  • Luminescence Tomography
  • Informetrics
  • Applied mathematics
  • Multimodality imaging


Scientific Activities

Honors & Awards
  • 1988 Oxford Univ. PhD Scholarship for the Sino-UK PhD Program (Robotics)
  • 1988 Univ. Postgraduate Research Scholarship (Remote Sensing). Univ. of Tasmania, Australia
  • 1990 Travel Award. International Symposium on X-ray Microscopy, London, UK
  • 1992 Travel Award. Scanning 1992, Atlantic City, NJ
  • 1993 Travel Award. Scanning 1993, Orlando, FL
  • 1999 Marquis Who's Who in Science and Engineering (00-01)
  • Outstanding Scientists of the 21st Century (2001), International Biographical Centre, Cambridge CB2 3QP, England
  • Samuel Reynolds Pritchard Professor of Engineering, VT-WFU School of Biomedical Engineering & Sciences, Virginia Polytechnic Institute & State University, 06-13
  • Distinguished Associate Editor Service for Journal of Medical Physics, American Association of Physicists in Medicine, presented on November 26, 2007
  • Associate Editor of the month for the IEEE Access Special Section: Emerging Computed Tomography Technologies, 2015
  • Dean’s Award for Excellence in Research, College of Engineering, Virginia Tech, 2010
  • Distinguished Leading Research Award (DLR Award), Virginia Tech – Wake Forest University School of Biomedical Engineering and Sciences, 2010
  • Clark & Crossan Endowed Chair Professor, Rensselaer Polytechnic Institute, 13-Now
  • Certificate of Merit for ISBI’14 General Chair, IEEE EMBS & SPS, 2014
  • Outstanding Associate Editor, IEEE TMI (the prime journal in the medical imaging field), 2015 (leading guest editors for 4 special issues; managed 57 manuscripts over the past 2 years with an average turn-around time of 28.75 days).


  1. Chen H, Zhang Y, Zhang WH, Liao PX, Li K, Zhou J, Wang G: Low-dose CT via convolutional neural network. Biomedical Optics Express 8:679-694,, 2017.
  2. Chen MY, Wei B, Wang G: General rigid motion correction for CT imaging based on locally linear embedding. Pending review, 2017.
  3. Han WM, Long FX, Cong WX, Intes X, Wang G: Radiative transfer with delta-Eddington-type phase functions. Applied Mathematics and Computation 300:70-78, 2017.
  4. Ge G, Zhang J, Lumby C, Winkler M, Cong WX, Wang G: Interior tomography with dual-source data. Pending review, Academic Radiology, 2016.
  5. Xi Y, Cong WX, Harrison D, Wang G: Grating oriented line-wise filtration (GOLF) for dual-energy CT. Pending review, PMB, 2016.
  6. Yang JS, Yu HY, Wang G: Initial analysis of the middle problem. Journal of X-ray Science and Tech. pending revision, 2017.
  7. Cong WX, Lai YR, Yang QS, Li Jia, Wang G: CT image reconstruction in a low dimensional manifold. Pending, 2016.
  8. Oh O, Wang G, Lee SW: K-edge-based interior tomography. Pending review, 2016.
  9. Zhang YB, Mou XQ, Wang G, Yu HY: Tensor-based dictionary learning for spectral CT. IEEE Trans. Medical Imaging 36:142-154, 2017.
  10. Wang YM, Wang G, Mao SW, Cong WX, Ji ZL, Cai JF, Ye JB: A framelet-based iterative maximum-likelihood reconstruction algorithm for spectral CT. Inverse Problems 32: doi:10.1088/0266-5611/32/11/115021, 2016.
  11. Wang YM, Wang G, Mao SW, Cong WX, Ji ZL, Cai JF, Ye JB: A spectral interior CT by a framelet-based reconstruction algorithm. Journal of X-ray Sci. & Tech. 24:771-785, 2016.
  12. Puliyakote ASK, Vasilescu DM, Sharma KS, Wang G, Hoffman EA: A skeleton-tree based approach to acinar morphometric analysis using micro computed tomography with comparison of acini in young and senile C57Bl/6 mice. Journal of Applied Physiology, DOI: 10.1152/japplphysiol.00923.2015, 2016.
  13. Puliyakote ASK, Vasilescu DM,  Newell Jr. JD, Wang G, Weibel ER, Hoffman EA:  Morphometric differences between central vs. surface acini in A/J mice using high–resolution micro computed tomography. Journal of Applied Physiology, DOI: 10.1152/japplphysiol.00317, 2016.
  14. Li L, Wang BG, Wang G: Edge-oriented dual-dictionary guided enrichment (EDGE) for MRI-CT Image Reconstruction. Journal of X-ray Science and Technology 24:161-175, 2016.
  15. Xi Y, Jin YN, De Man B, Wang G: High-kVp assisted metal artifact reduction for x-ray computed tomography. IEEE Access, DOI 10.1109/ACCESS.2016.2602854, 2016.
  16. Pang S, Zhu ZY, Wang G, Cong WX: Small-angle scatter tomography with a photon-counting detector array. Phys. Med. Biol. 61:3734-3748, 2016.
  17. Li J, Miao C, Shen Z, Wang G, Yu H: Robust frame based x-ray CT reconstruction. Journal of Computational Mathematics 34:683-704, 2016.
  18. De Man R, Wang G, Kalra M, Otrakji A, Hsieh S, Pelc N: Upper-bound on CT dose reduction for nodule detection. IEEE Access 4: Digital Object Identifier 10.1109/ACCESS.2016.2592941, 2016.
  19. Chen MY, Xi Y, Cong WX, Wei B, Wang G: CT imaging geometrical calibration via locally linear embedding. Journal of X-ray Science & Tech 24:241–256, 2016.
  20. Getzin M, Gjesteby L, Chuang YJ, McCallum S, Cong WX, Pan ZW, Dai GH, Zhang SB, Wang G: Exploring the modulation of magnetic resonance relaxation parameters through the use of high energy electromagnetic radiation and semiconducting nanoparticles. JSM Biomedical Imaging 3:1005, 2016.
  21. Gong H, Yang H, Jia X, Wang G, Cao GH: X-ray scatter correction for multi-source interior computed tomography. Med. Phys., DOI: 10.1002/mp.12022, 2016.
  22. Wang G: A perspective of deep imaging. IEEE Access, 10.1109/ACCESS.2016.2624938, 2016.
  23. Gjesteby L, De Man B, Jin YN, Paganetti H, Verburg J, Giantsoudi D, Wang G: Metal Artifact Reduction in CT: Where Are We After Four Decades? IEEE Access 4, DOI 10.1109/ACCESS.2016.2608621, 2016.
  24. Yang QS, Cong WX, Xi Y, Wang G: Spectral x-ray CT image reconstruction with a combination of energy-integrating             and                photon-counting  detectors. PLoS One,, 2016.
  25. Giantsoudi D, De Man B, Verburg J, Trofimov A, Jin YN, Wang G, Gjesteby L, Paganetti H: Metal artifacts in computed tomography for radiation therapy planning: dosimetric effects and impact of metal artifact reduction. Accepted by Phys. Med. Biol., 2016.
  26. Yang QS, Cong W, Wang G: Superiorization-based multi-energy CT image reconstruction. Accepted by Inverse Problems, 2016.
  27. Wang G, Kalra M, Murugan V, Xi Y, Gjesteby L, Getzin M, Yang QS, Cong WX, Vannier MW: Simultaneous CT-MRI: Next chapter of multi-modality imaging. Med. Phys. 42:5879-5889, 2015.
  28. Wang G, Butler A, Yu HY, Campbell M: Spectral CT with photon-counting detectors – The next wave of the CT field. The editorial for the special issue on spectral CT, IEEE Trans. Medical Imaging 34:693-696, 2015.
  29. Yu HY, Mou XQ, Wang G: Editorial: Emerging Computed Tomography Technologies. The editorial for special issue on emerging CT technologies, IEEE Access 2:10.1109/ACCESS.2014.2384851, 2015.
  30. Li L, Chen ZQ, Cong WX, Wang G: Spectral CT imaging with hybrid detectors in dynamic-threshold counting and integrating modes. IEEE Trans. Medical Imaging 34:716-728, 2015.
  31. Meng B, Cong WX, De Man B, Wang G: Energy window optimization for x-ray K-edge tomographic imaging. IEEE Trans. Biomedical Engineering 63:1623-1630, 2015.
  32. Zhang Y, Xi Y, Yang QS, Cong WX, Zhou J, Wang G: Spectral CT reconstruction with image sparsity and spectral means. IEEE Trans. Computational Imaging 2:510-523, 2016.
  33. Yu H, Wang G, Yang JS, Pack J, Jiang M, DeMan B: Data consistency condition for truncated projections in fan-beam geometry. Journal of X-ray Science & Tech. 23:627-638, 2015.
  34. Yang QS, Lv Y, Xi Y, Kalra M, Cong WX, Wang G: Sinogram-based attenuation correction in PET/CT. Journal of X-ray Science and Technology 24:9-22, 2016.
  35. FitzGerald P, Bennett J, Carr J, Edic P, Entrikin D, Gao H, Iatrou M, Jin Y, Liu BD, Wang G, Wang J, Yin YN, Yu HY, Zeng Z, De Man B: Cardiac CT: a System Architecture Study. Journal of X-ray Science and Tech. 24:43-65, 2016.
  36. Xi Y, Zhao J, Bennett J, Sinusas A, Wang G: Simultaneous CT-MRI image reconstruction with structural coupling and compressive sensing. IEEE Trans. Medical Imaging 63:1301-1309, 2015.
  37. Yang QS, Kalra M, Padole A, Li J, Hilliard E, Lai YJ, Wang G: Big data from CT scanning. JSM Biomedical Imaging Data Papers 2(1):1003 (6 pages), 2015.
  38. Cong WX, Xi Y, Wang G: Spherical grating based x-ray Talbot interferometry. Medical Physics 42:6514-6519, 2015.
  39. Tan SQ, Zhang, YB, Wang G, Mou XQ, Cao GH, Wu ZF, Yu HY: Tensor-based dictionary learning for dynamic tomographic reconstruction. Phys. Med. Biol. 60: 2803-2818, 2015.
  40. Yang FG, Ozturk MS, Zhao LL, Cong WX, Wang G, Intes X: High-resolution mesoscopic fluorescence molecular tomography based on compressive sensing. IEEE Trans. BME 62:248-255, 2015.
  41. Stefanov P, Cong WX, Wang G: Modulated luminescence tomography. Inverse Problems and Imaging 9:579-589, 2015.
  42. Liu BD, Yu H, Verbridge S, Sun L, Wang G: Dictionary learning based reconstruction method for electron tomography, Scanning 36:377-383, 2014.
  43. Bennett J, Opie AMT, Xu Q, Yu HY, Walsh M, Butler A, Butler P, Cao GH, Mohs A, Wang G: Hybrid spectral micro-CT: System design, implementation & preliminary results. IEEE Trans. Biomedical Engineering 61:246-253, 2014.
  44. Liu F, Yu H, Cong WX, Wang G: Top-level design and pilot analysis of low-end CT scanners based on linear scanning for developing countries. Journal of X-ray Science and Technology 22:673-686, 2014.
  45. Opie AMT, Bennett J, Walsh M, Rajendran K, Yu HY, Xu Q, Butler A, Butler P, Cao GH, Mohs A, Wang G: Study of scan protocol for exposure reduction in hybrid spectral micro-CT. Scanning 36:444-455, 2014.
  46. Zhang SL, Zhang DH, Gong H, Ghasemalizadeh O, Wang G, Cao GH: Fast and accurate computation of system matrix for area integral model based ART. Optical Engineering 53:113101, doi: 10.1117/1.OE.53.11.113101, 2014.
  47. Liu FL, Yang QS, Cong WX, Wang G: Dynamic bowtie filter for multi-slice/cone-beam CT. PLoS ONE 9(7):e103054, doi:10.1371/journal.pone.0103054, 2014.
  48. Li L, Chen ZQ, Wang G, Chu JS, Gao H: A tensor PRISM algorithm for multi-energy CT reconstruction and comparative studies. Journal of X-ray Science and Technology 22:147-163, 2014.
  49. Yu HY, Wang G: SART-type half-threshold filtering approach for CT reconstruction. IEEE Access 2:doi:10.1109/ACCESS.2014.2326165, 2014.
  50. Cao G,  Liu BD, Gong H,  Yu H, Wang G: A stationary-sources and rotating-detectors computed tomography architecture for higher temporal resolution and lower radiation dose. IEEE Access 2:doi:0.1109/ACCESS.2014.2363367, 2014.
  51. Yelleswarapu VR, Liu FL, Cong WX, Wang G: Top-level system designs for hybrid low-field MRI-CT with potential of pulmonary imaging. Sensing and Imaging 15:98, DOI 10.1007/s11220-014-0098-4, 2014.
  52. Neculaes B, Edic P, Frontera M, Caiafa A, Wang G, De Man B: Promise of distributed sources – CT and beyond: lessons learned and future outlook. IEEE Access 2: DOI 10.1109/ACCESS.2014.2363949, 2014.
  53. Lv Y, Zhao J, Wang G: Edge-guided dual-modality image reconstruction. IEEE Access 2:10.1109/ACCESS.2014.2371994, 2014.
  54. Sharma KS, Gong H, Ghasemalizadeh O, Yu HY, Wang G, Cao GH: Interior micro-CT with an offset detector. Med. Phys. 41:061915(1-10), 2014.
  55. Ren S, Chen X, Wang H, Qu X, Wang G, Liang JM, Tian J: Molecular Optical Simulation Environment (MOSE): A platform for the simulation of light propagation in turbid media. PLoS ONE 8(4):e61304. doi:10.1371/journal.pone.0061304, 2013.
  56. Feng P, Cong WX, Wei B, Wang G: Analytic comparison between x-ray fluorescence CT and K-edge CT. IEEE Trans. Biomedical Engineering 61:975-985, 2014.
  57. Ren, Wu, Wang G, Wu XZ, Liu H: Three-dimensional x-ray fluorescence mapping (XFM) of a gold nanoparticle-loaded phantom. Med. Phys. 41:031902:1-12, 2014.
  58. Cong WX, Liu FL, Wang C, Wang G: X-ray micro-modulated luminescence tomography (XMLT). Optics Express 22:5572–5580, 2014 (selected by the Editors, Andrew Dunn and Anthony Durkin, for publication in the Virtual Journal for Biomedical Optics (VJBO) V9(5), April 29, 2014, which is a special feature of OSA's Optics InfoBase,
  59. Niu GG, Sapoznik E, Lu P, Criswell T, Mohs AM, Wang G, Lee SJ, Xu Y, Soker S: Fluorescent imaging of endothelial cells in bioengineered blood vessels: The impact of cross-linking of the scaffold. Journal of Tissue Engineering and Regenerative Medicine, doi: 10.1002/term.1876, 2014.
  60. Zhao LL, Yang H, Cong WX, Wang G, Intes X: Lp regularization for early time-gate reconstruction in time-domain fluorescence molecular tomography. Optics Letters 39:4156-4159, 2014 (selected by the Editors, Andrew Dunn and Anthony Durkin, for publication in the Virtual Journal for Biomedical Optics (VJBO),
  61. Cong WX, Wang C, Wang G: Stored luminescence computed tomography. Applied Optics 53:5672-5676, 2014 (selected for inclusion in Virtual Journal for Biomedical Optics (VJBO) 9(11), Nov. 6, 2014).
  62. Cong WX, Pan ZW, Filkins R, Srivastava AM, Ishaque N, Stefanov P, Wang G: X-ray micro-modulated luminescence tomography in dual-cone geometry. Journal of Biomedical Optics 19:076002(1-5), 2014.
  63. Cong WX, Wang G: X-ray fan-beam luminescence tomography. Austin J Biomed Eng. 1(5):1024, 2014
  64. Cong WX, Xi Y, Wang G: X-ray fluorescence computed tomography with polycapillary focusing. IEEE Access 2:1138-1142, 2014.
  65. Gurjarpadhye AA, DeWitt MR, Xu Y, Wang G, Rylander MN, Rylander CG: Dynamic assessment of the endothelialization of tissue-engineered blood vessels using an OCT catheter-based fluorescence imaging system. Tissue Engineering (Part C Methods):DOI:10.1089/ten.TEC.2014.0345, 2014.
  66. Pian Q, Wang C, Chen XL, Liang JM, Zhao LL, Wang G, Intes X: Multimodal biomedical optical imaging: Towards comprehensive investigation of biological tissues. Current Molecular Imaging 3:72-87, 2014.



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