Xiangyang Tang PhD

Department of Radiology and Imaging Sciences
Professor

Emory University School of Medicine
Department of Radiology and Imaging Sciences
1701 Uppergate Drive

Overview

With 19 patents and over 100 papers under his name, Dr. Xiangyang Tang is SPIE Fellow (Class of 2019), an ABR certified Medical Physicist in Diagnostic Medical Physics, and a leading researcher in CT imaging (MDCT, CBCT and phase contrast CT). In his tenure with GEs Applied Science Lab (2001-2009), he made key contributions to GE's flagship CT products (Lightspeed VCT and Discovery CT750-HD). Since joined Emory Radiology in 2009, Dr. Tang has been Principal Investigator of research projects supported by NIH, DoD, and AHA (American Heart Association) and the industry. He has served and is serving the community in scientific committees (RSNA Physics Subcommittee), study sections (NIH, DoD, ACS, AHA and ALZ) and as an Associate Editor (Medical Physics).

Academic Appointment

Professor of Radiology and Imaging Sciences, Department of Radiology and Imaging Sciences, Emory University School of Medicine

Education

Degrees

MS from National University of Defense Tech
PhD from University of Rochester
MS from University of Rochester
BS from National University of Defense Tech

Research

Focus

To lead a research team and collaborate with the clinicians and scientists at Emory and GaTech, focusing on translational/clinical researches X-ray phase contrast CT, spectral CT for cardiovascular imaging and image-guided radiation therapy, motion compensated image reconstruction with high temporal and spatial resolutions and low radiation dose, PET/CT imaging for clinical excellence, and new imaging modality to save life.

Publications

Optimization-based image reconstruction regularized with inter-spectral structural similarity for limited-angle dual-energy cone-beam CT.
Phys Med Biol
06/25/2025 Authors: Peng J; Wang T; Xie H; Qiu RLJ; Chang C-W; Roper J; Yu DS; Tang X; Yang X
Image-domain material decomposition for dual-energy CT using unsupervised learning with data-fidelity loss.
Med Phys Volume: 51 Page(s): 6185 - 6195
09/01/2024 Authors: Peng J; Chang C-W; Xie H; Qiu RLJ; Roper J; Wang T; Ghavidel B; Tang X; Yang X
Deep Learning-Based Contrast Enhanced Dual-Energy CT Imaging From Non-Enhanced Single-Energy CT
Volume: 49 Page(s): E181 - E182
06/01/2022 Authors: Xie H; Lei Y; Wang T; Roper J; Ghavidel B; McDonald M; Yu D; Tang X; Bradley J; Liu T
CT-Guided and Sparsity-Constrained Multi-Material Decomposition for Dual Energy CBCT
Volume: 49 Page(s): E609 - E609
06/01/2022 Authors: Wang Q; Xie H; Wang T; Roper J; Tang X; Bradley J; Liu T; Yang X
Multi-Domain Constraint Based Estimation of Effective Atomic Number and Electron Density for Dual Energy CT
Volume: 49 Page(s): E124 - E125
06/01/2022 Authors: Wang Q; Xie H; Chang C; Wang T; Roper J; Tang X; Bradley J; Liu T; Yang X
Synthesizing Iodine Map From Non-Contrast Enhanced CT Via Deep-Learning Network
Volume: 49 Page(s): E606 - E606
06/01/2022 Authors: Xie H; Lei Y; Wang T; Roper J; Ghavidel B; McDonald M; Yu D; Tang X; Bradley J; Liu T
Photon-Counting CT: Image Quality Optimization, Novel Algorithms, and Emerging Clinical Applications
Volume: 49 Page(s): E557 - E557
06/01/2022 Authors: Tang X; Taguchi K; Pan X; Yu L; Wang A
Fundamentals of Photon-Counting CT
Volume: 49 Page(s): E541 - E542
06/01/2022 Authors: Tang X; Maltz J; Rajendran K
Photon-counting CT via interleaved/gapped spectral channels: Feasibility and imaging performance.
Med Phys Volume: 49 Page(s): 1445 - 1457
03/01/2022 Authors: Tang X; Ren Y; Xie H
Self-Supervised Learning Based CT Imaging with High Through-Plane Resolution
Volume: 48
06/01/2021 Authors: Xie H; Lei Y; Wang T; Tian Z; Roper J; Bradley J; Tang X; Liu T; Yang X
Spectral Imaging in Photon-Counting CT: Virtual Monochromatic Analysis Vs. Principal Component Analysis
Volume: 47 Page(s): E553 - E553
06/01/2020 Authors: Tang X; Ren Y; Xie H; Long W
Photon-Counting Spectral CT with Principal Component Analysis in Image and Projection Domains
Volume: 46 Page(s): E428 - E428
06/01/2019 Authors: Xie H; Thuering T; Liu Y; Long W; Ren Y; Tang X
Virtual Monochromatic Analysis in Spectral CT for Differentiation of Soft Tissues: Potentials and Challenges
Volume: 46 Page(s): E389 - E389
06/01/2019 Authors: Tang X; Long W; Xie H; Ren Y
Development of an Academic-Private Collaborative Medical Physics Imaging ResidencyTraining Model.
J Am Coll Radiol Volume: 16 Page(s): 355 - 359
03/01/2019 Authors: Nye JA; Cuddy M; Ruckdeschel T; Jallow N; Dharmadhikari S; Tang X; Mullins ME
Certification in Medical Physics Imaging, The Workforce and Training Models.
J Am Coll Radiol Volume: 16 Page(s): 344 - 349
03/01/2019 Authors: Nye JA; Cuddy M; Ruckdeschel T; Jallow N; Dharmadhikari S; Tang X; Mullins ME
Content-oriented sparse representation (COSR) for CT denoising with preservation of texture and edge.
Med Phys Volume: 45 Page(s): 4942 - 4954
11/01/2018 Authors: Xie H; Niu T; Tang S; Yang X; Kadom N; Tang X
A Learning-Based Method to Improve Pelvis Cone Beam CT Image Quality for Prostate Cancer Radiation Therapy
Volume: 102 Page(s): E377 - E378
11/01/2018 Authors: Yang X; Wang T; Lei Y; Jiang X; Jani A; Patel PR; Tang X; Dhabaan AH; Curran WJ; Liu T
Optimal Virtual Monochromatic Image in "Twin-Beam" Imaging of Dual-Energy CT for Head-and-Neck Cancer Radiation Therapy
Volume: 102 Page(s): S104 - S105
11/01/2018 Authors: Yang X; Wang T; Ghavidel B; Beitler JJ; Tang X; Curran WJ; Liu T
Optimization based beam-hardening correction in CT under data integral invariant constraint.
Phys Med Biol Volume: 63 Page(s): 135015
07/02/2018 Authors: Tang S; Huang K; Cheng Y; Mou X; Tang X
Three-Dimensional Weighting in Cone Beam FBP Reconstruction and Its Transformation Over Geometries.
IEEE Trans Biomed Eng Volume: 65 Page(s): 1235 - 1244
06/01/2018 Authors: Tang S; Huang K; Cheng Y; Niu T; Tang X
Optimal Virtual Monoenergetic Image in TwinBeam Dual-Energy CT for Head-And-Neck Radiotherapy
Volume: 45 Page(s): E589 - E589
06/01/2018 Authors: Wang T; Ghavidel J; Beitler J; Tang X; Curran W; Liu T; Yang X
Learning-Based Cone-Beans CT Correction: Dosimetric Calculation Accuracy in Prostate Cancer Radiation Therapy
Volume: 45 Page(s): E169 - E170
06/01/2018 Authors: Wang T; Lei Y; Jani A; Patel P; Dhabaan A; Liu T; Dong X; Jiang X; Tang X; Curran W
Dosimetric Study of Cone-Beam CT in Adaptive Proton Therapy for Brain Cancer
Volume: 45 Page(s): E259 - E259
06/01/2018 Authors: Wang T; Hedrick S; Lei Y; Liu T; Jiang X; Dhabaan A; Tang X; Curran W; McDonald M; Yang X
Content-Oriented Sparse Representation (COSR) Denoising in Perfusion CT for Dose Reduction
Volume: 45 Page(s): E621 - E622
06/01/2018 Authors: Xie H; Tang X
Improving Image Quality of Cone-Beam CT Using Alternating Regression Forest.
Volume: 10573
02/01/2018 Authors: Lei Y; Tang X; Higgins K; Wang T; Liu T; Dhabaan A; Shim H; Curran WJ; Yang X
Optimization of data acquisition in axial CT under the framework of sampling on lattice for suppression of aliasing artifacts with algorithmic detector interlacing.
Med Phys Volume: 44 Page(s): 6239 - 6250
12/01/2017 Authors: Xie H; Tang X
Improving CBCT Image Quality Using Machine Learning and Auto-Context Model
Volume: 44
06/01/2017 Authors: Yang X; Lei Y; Higgins K; Dong X; Dhabaan A; Elder E; Jiang X; Curran W; Tang X
A Patch-based CBCT Scatter Artifact Correction Using Prior CT.
Volume: 10132
02/01/2017 Authors: Yang X; Liu T; Dong X; Tang X; Elder E; Curran WJ; Dhabaan A
Reducing radiation dose in grating based x-ray phase contrast CT with twin-peaks in its phase stepping curves.
Med Phys Volume: 43 Page(s): 5942
11/01/2016 Authors: Xie H; Cai W; Yang L; Mao H; Tang X
Axial Cone-Beam Reconstruction by Weighted BPF/DBPF and Orthogonal Butterfly Filtering.
IEEE Trans Biomed Eng Volume: 63 Page(s): 1895 - 1903
09/01/2016 Authors: Tang S; Tang X
Grating-based x-ray differential phase contrast imaging with twin peaks in phase-stepping curves-phase retrieval and dewrapping.
Med Phys Volume: 43 Page(s): 2855 - 2869
06/01/2016 Authors: Yang Y; Xie H; Cai W; Mao H; Tang X
A nanocomposite of Au-AgI core/shell dimer as a dual-modality contrast agent for x-ray computed tomography and photoacoustic imaging.
Med Phys Volume: 43 Page(s): 589
01/01/2016 Authors: Orza A; Yang Y; Feng T; Wang X; Wu H; Li Y; Yang L; Tang X; Mao H
Increased Computed Tomography Dose Due to Miscentering With Use of Automated Tube Voltage Selection: Phantom and Patient Study.
Curr Probl Diagn Radiol Volume: 45 Page(s): 265 - 270
01/01/2016 Authors: Filev PD; Mittal PK; Tang X; Duong P-A; Wang X; Small WC; Applegate K; Moreno CC
Histone Methyltransferase Enhancer of Zeste Homolog 2-Mediated ABCA1 Promoter DNA Methylation Contributes to the Progression of Atherosclerosis.
PLoS One Volume: 11 Page(s): e0157265
01/01/2016 Authors: Lv Y-C; Tang Y-Y; Zhang P; Wan W; Yao F; He P-P; Xie W; Mo Z-C; Shi J-F; Wu J-F
3D fusion of LV venous anatomy on fluoroscopy venograms with epicardial surface on SPECT myocardial perfusion images for guiding CRT LV lead placement.
JACC Cardiovasc Imaging Volume: 7 Page(s): 1239 - 1248
12/01/2014 Authors: Zhou W; Hou X; Piccinelli M; Tang X; Tang L; Cao K; Garcia EV; Zou J; Chen J
WE-G-18A-08: Axial Cone Beam DBPF Reconstruction with Three-Dimensional Weighting and Butterfly Filtering.
Med Phys Volume: 41 Page(s): 528
06/01/2014 Authors: Tang S; Wang W; Tang X
3D FUSION OF LV VENOUS ANATOMY ON FLUOROSCOPY VENOGRAMS WITH EPICARDIAL SURFACES ON SPECT MYOCARDIAL PERFUSION IMAGES FOR GUIDING CRT LV LEAD PLACEMENT
JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY Volume: 63 Page(s): A1124 - A1124
04/01/2014 Authors: Zhou W; Zou J; Piccinelli M; Tang X; Tang L; Cao K; Garcia EV; Chen J
Radial differential interior tomography and its image reconstruction with differentiated backprojection and projection onto convex sets.
Med Phys Volume: 40 Page(s): 091914
09/01/2013 Authors: Tang S; Tang X
SU-C-144-06: Detectability Index and Its Variation in Differential Phase Contrast CT Compared with the Conventional CT - A Channelized Hotelling Observer Study.
Med Phys Volume: 40 Page(s): 99
06/01/2013 Authors: Tang X; Yang Y; Tang S
The second-order differential phase contrast and its retrieval for imaging with x-ray Talbot interferometry.
Med Phys Volume: 39 Page(s): 7237 - 7253
12/01/2012 Authors: Yang Y; Tang X
A system for seismocardiography-based identification of quiescent heart phases: implications for cardiac imaging.
IEEE Trans Inf Technol Biomed Volume: 16 Page(s): 869 - 877
09/01/2012 Authors: Wick CA; Su J-J; McClellan JH; Brand O; Bhatti PT; Buice AL; Stillman AE; Tang X; Tridandapani S
Statistical CT noise reduction with multiscale decomposition and penalized weighted least squares in the projection domain.
Med Phys Volume: 39 Page(s): 5498 - 5512
09/01/2012 Authors: Tang S; Tang X
Characterization of imaging performance in differential phase contrast CT compared with the conventional CT: spectrum of noise equivalent quanta NEQ(k).
Med Phys Volume: 39 Page(s): 4467 - 4482
07/01/2012 Authors: Tang X; Yang Y; Tang S
Characterization of imaging performance in differential phase contrast CT compared with the conventional CT: Spectrum of noise equivalent quanta NEQ(k).
Med Phys Volume: 39 Page(s): 4467 - 4482
07/01/2012 Authors: Tang X; Yang Y; Tang S
Practical interior tomography with radial Hilbert filtering and a priori knowledge in a small round area.
J Xray Sci Technol Volume: 20 Page(s): 405 - 422
01/01/2012 Authors: Tang S; Yang Y; Tang X
Simulation and analysis of image quality impacts from single source, ultra-wide coverage CT scanner.
J Xray Sci Technol Volume: 20 Page(s): 395 - 404
01/01/2012 Authors: Li B; Toth TL; Hsieh J; Tang X
The mathematical equivalence of consistency conditions in the divergent-beam computed tomography.
J Xray Sci Technol Volume: 20 Page(s): 45 - 68
01/01/2012 Authors: Tang S; Xu Q; Mou X; Tang X
Characterization of imaging performance in differential phase contrast CT compared with the conventional CT--noise power spectrum NPS(k).
Med Phys Volume: 38 Page(s): 4386 - 4395
07/01/2011 Authors: Tang X; Yang Y; Tang S
Characterization of imaging performance in differential phase contrast CT compared with the conventional CT-Noise power spectrum NPS(k).
Med Phys Volume: 38 Page(s): 4386 - 4395
07/01/2011 Authors: Tang X; Yang Y; Tang S
Patient size compensated automatic tube current modulation in multi-detector row CT of the abdomen and pelvis.
Acad Radiol Volume: 18 Page(s): 205 - 211
02/01/2011 Authors: Li J; Udayasankar UK; Tang X; Toth TL; Small WC; Kalra MK
Minimization of over-ranging in helical volumetric CT via hybrid cone beam image reconstruction--benefits in dose efficiency.
Med Phys Volume: 35 Page(s): 3232 - 3238
07/01/2008 Authors: Tang X; Hsieh J; Dong F; Fan J; Toth TL
3D weighting in cone beam image reconstruction algorithms: ray-driven vs. pixel-driven.
Annu Int Conf IEEE Eng Med Biol Soc Volume: 2008 Page(s): 2709 - 2712
01/01/2008 Authors: Tang X; Nilsen RA; Smolin A; Lifland I; Samsonov D; Taha B
Handling data redundancy in helical cone beam reconstruction with a cone-angle-based window function and its asymptotic approximation.
Med Phys Volume: 34 Page(s): 1989 - 1998
06/01/2007 Authors: Tang X; Hsieh J
A three-dimensional-weighted cone beam filtered backprojection (CB-FBP) algorithm for image reconstruction in volumetric CT-helical scanning.
Phys Med Biol Volume: 51 Page(s): 855 - 874
02/21/2006 Authors: Tang X; Hsieh J; Nilsen RA; Dutta S; Samsonov D; Hagiwara A
Extending Three-Dimensional Weighted Cone Beam Filtered Backprojection (CB-FBP) Algorithm for Image Reconstruction in Volumetric CT at Low Helical Pitches.
Int J Biomed Imaging Volume: 2006 Page(s): 45942
01/01/2006 Authors: Tang X; Hsieh J; Nilsen RA; McOlash SM
Suppression of angiogenesis and tumor growth by selective inhibition of angiopoietin-2.
Volume: 11 Page(s): 9170S - 9170S
12/15/2005 Authors: Oliner J; Min HS; Leal J; Yu DY; Rao S; You E; Tang X; Kim HJ; Meyer S; Han SJ
A three-dimensional weighted cone beam filtered backprojection (CB-FBP) algorithm for image reconstruction in volumetric CT under a circular source trajectory.
Phys Med Biol Volume: 50 Page(s): 3889 - 3905
08/21/2005 Authors: Tang X; Hsieh J; Hagiwara A; Nilsen RA; Thibault J-B; Drapkin E
A filtered backprojection algorithm for cone beam reconstruction using rotational filtering under helical source trajectory.
Med Phys Volume: 31 Page(s): 2949 - 2960
11/01/2004 Authors: Tang X; Hsieh J
X-ray scatter correction algorithm for cone beam CT imaging.
Med Phys Volume: 31 Page(s): 1195 - 1202
05/01/2004 Authors: Ning R; Tang X; Conover D
Matched view weighting in tilted-plane-based reconstruction algorithms to suppress helical artifacts and optimize noise characteristics.
Med Phys Volume: 30 Page(s): 2912 - 2918
11/01/2003 Authors: Tang X
Flat panel detector-based cone beam computed tomography with a circle-plus-two-arcs data acquisition orbit: preliminary phantom study.
Med Phys Volume: 30 Page(s): 1694 - 1705
07/01/2003 Authors: Ning R; Tang X; Conover D; Yu R
A cone beam filtered backprojection (CB-FBP) reconstruction algorithm for a circle-plus-two-arc orbit.
Med Phys Volume: 28 Page(s): 1042 - 1055
06/01/2001 Authors: Tang X; Ning R
Cone beam volume CT image artifacts caused by defective cells in x-ray flat panel imagers and the artifact removal using a wavelet-analysis-based algorithm.
Med Phys Volume: 28 Page(s): 812 - 825
05/01/2001 Authors: Tang X; Ning R; Yu R; Conover D
Flat panel detector-based cone-beam volume CT angiography imaging: system evaluation.
IEEE Trans Med Imaging Volume: 19 Page(s): 949 - 963
09/01/2000 Authors: Ning R; Chen B; Yu R; Conover D; Tang X; Ning Y
MR volumetric analysis of the human basal ganglia: normative data.
Acad Radiol Volume: 7 Page(s): 627 - 634
08/01/2000 Authors: Ifthikharuddin SF; Shrier DA; Numaguchi Y; Tang X; Ning R; Shibata DK; Kurlan R
Dosimetric study on learning-based cone-beam CT correction in adaptive radiation therapy.
Med Dosim Volume: 44 Page(s): e71 - e79
Authors: Wang T; Lei Y; Manohar N; Tian S; Jani AB; Shu H-K; Higgins K; Dhabaan A; Patel P; Tang X

Directory section navigation

Profile