Dr. Gangjun Liu Profile

Dr. Gangjun Liu

Doctor at Alcon Research

SPIE Involvement:

Author

Publications (41)

SPIE Journal Paper | 15 November 2020 Open Access

High signal-to-noise ratio reconstruction of low bit-depth optical coherence tomography using deep learning

Qiangjiang Hao, Kang Zhou, Jianlong Yang, Yan Hu, Zhengjie Chai, Yuhui Ma, Gangjun Liu, Yitian Zhao, Shenghua Gao, Jiang Liu

JBO, Vol. 25, Issue 12, 123702, (November 2020) https://doi.org/10.1117/12.10.1117/1.JBO.25.12.123702

KEYWORDS: Optical coherence tomography, Signal to noise ratio, Image segmentation, Compressed sensing, Visualization, Network architectures, Telemedicine, Image resolution, Imaging systems, Denoising

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Proceedings Article | 15 November 2018 Paper

Analysis of small vessel cochlear blood flow regulation during loud sound exposure in the mouse

George W. Burwood, Suzan Dziennis, Teresa Wilson, Jianlong Yang, Gangjun Liu, Sarah Foster, Ruikang Wang, Alfred Nuttall

Proceedings Volume 10964, 109641R (2018) https://doi.org/10.1117/12.2505434

KEYWORDS: Blood circulation, Optical coherence tomography, Supercontinuum generation, Ear, Angiography, Scanning probe lithography, Capillaries, Vibrometry, Bone, Imaging systems

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Proceedings Article | 16 May 2017 Presentation

Extended axial range, widefield OCT and OCT angiography (Conference Presentation)

Gangjun Liu, Jianlong Yang, Yan Li, Pengxiao Zhang, Yali Jia, David Huang

Proceedings Volume 10045, 100450W (2017) https://doi.org/10.1117/12.2251022

KEYWORDS: Lithium, Holmium, Current controlled current source, Optical coherence tomography, Angiography, Image resolution, Retinal scanning, Retina

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SPIE Journal Paper | 1 February 2017 Open Access

Automated three-dimensional registration and volume rebuilding for wide-field angiographic and structural optical coherence tomography

Pengxiao Zang, Gangjun Liu, Miao Zhang, Jie Wang, Thomas Hwang, David Wilson, David Huang, Dengwang Li, Yali Jia

JBO, Vol. 22, Issue 02, 026001, (February 2017) https://doi.org/10.1117/12.10.1117/1.JBO.22.2.026001

KEYWORDS: Optical coherence tomography, Angiography, Image registration, Biomedical optics, Eye, Reflectivity, Coherence (optics), 3D image processing, Retina, Image segmentation

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SPIE Journal Paper | 24 August 2016 Open Access

Calibration of optical coherence tomography angiography with a microfluidic chip

Johnny Su, Rahul Chandwani, Simon Gao, Alex Pechauer, Miao Zhang, Jie Wang, Yali Jia, David Huang, Gangjun Liu

JBO, Vol. 21, Issue 08, 086015, (August 2016) https://doi.org/10.1117/12.10.1117/1.JBO.21.8.086015

KEYWORDS: Optical coherence tomography, Angiography, Blood circulation, Microfluidics, Blood, Calibration, Video, Reflectivity, Optical calibration, Capillaries

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SPIE Journal Paper | 10 December 2015 Open Access

Imaging the anterior eye with dynamic-focus swept-source optical coherence tomography

Johnny P. Su, Yan Li, Maolong Tang, Liang Liu, Alex Pechauer, David Huang, Gangjun Liu

JBO, Vol. 20, Issue 12, 126002, (December 2015) https://doi.org/10.1117/12.10.1117/1.JBO.20.12.126002

KEYWORDS: Optical coherence tomography, Eye, Image segmentation, Imaging systems, Composites, Distance measurement, Image resolution, Image processing, Range imaging, Visualization

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SPIE Journal Paper | 10 June 2015 Open Access

En face Doppler total retinal blood flow measurement with 70 kHz spectral optical coherence tomography

Ou Tan, Gangjun Liu, Liu Liang, Simon S. Gao, Alex Pechauer, Yali Jia, David Huang

JBO, Vol. 20, Issue 06, 066004, (June 2015) https://doi.org/10.1117/12.10.1117/1.JBO.20.6.066004

KEYWORDS: Doppler effect, Optical coherence tomography, Phase shifts, Veins, Doppler tomography, Blood circulation, Eye, Arteries, Retina, Calibration

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SPIE Journal Paper | 28 May 2014 Open Access

Optical imaging in an Alzheimer’s mouse model reveals amyloid-β-dependent vascular impairment

Alexander Lin, Gangjun Liu, Nicholas Castello, James Yeh, Rombod Rahimian, Grace Lee, Victoria Tsay, Anthony Durkin, Bernard Choi, Frank LaFerla, Zhongping Chen, Kim Green, Bruce Tromberg

NPh, Vol. 1, Issue 01, 011005, (May 2014) https://doi.org/10.1117/12.10.1117/1.NPh.1.1.011005

KEYWORDS: Control systems, Brain, Optical imaging, Mouse models, Alzheimer's disease, Optical coherence tomography, In vivo imaging, Neuroimaging, Tissues, Proteins

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SPIE Journal Paper | 13 May 2014 Open Access

Speckle reduction in optical coherence tomography images based on wave atoms

Yongzhao Du, Gangjun Liu, Guoying Feng, Zhongping Chen

JBO, Vol. 19, Issue 05, 056009, (May 2014) https://doi.org/10.1117/12.10.1117/1.JBO.19.5.056009

KEYWORDS: Chemical species, Optical coherence tomography, Speckle, Wavelets, Signal to noise ratio, Image processing, Denoising, Image quality, Image filtering, Visualization

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SPIE Journal Paper | 2 November 2012 Open Access

Phase-resolved acoustic radiation force optical coherence elastography

Wenjuan Qi, Ruimin Chen, Lidek Chou, Gangjun Liu, Jun Zhang, Qifa Zhou, Zhongping Chen

JBO, Vol. 17, Issue 11, 110505, (November 2012) https://doi.org/10.1117/12.10.1117/1.JBO.17.11.110505

KEYWORDS: Tissues, Optical coherence tomography, Acoustics, Elastography, Coherence (optics), Tissue optics, Modulation, Arteries, 3D image processing, Ultrasonics

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SPIE Journal Paper | 28 June 2012 Open Access

Intravascular atherosclerotic imaging with combined fluorescence and optical coherence tomography probe based on a double-clad fiber combiner

Shanshan Liang, Changsen Sun, Arya Saidi, Joseph Jing, Gangjun Liu, Jiawen Li, Jun Zhang, Zhongping Chen, Jagat Narula

JBO, Vol. 17, Issue 7, 070501, (June 2012) https://doi.org/10.1117/12.10.1117/1.JBO.17.7.070501

KEYWORDS: Luminescence, Optical coherence tomography, Imaging systems, Tissues, Diagnostics, Data acquisition, Signal detection, Inflammation, Intravascular ultrasound, Image processing

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Proceedings Article | 9 February 2012 Paper

Combining OCT and a fluorescence intensity imaging method for atherosclerosis detection

Shanshan Liang, Arya Saidi, Joe Jing, Gangjun Liu, Jiechen Yin, Jagat Narula, Zhongping Chen

Proceedings Volume 8207, 82073Y (2012) https://doi.org/10.1117/12.907836

KEYWORDS: Optical coherence tomography, Luminescence, Diagnostics, Signal detection, Arteries, Tissues, Intravascular ultrasound, Inflammation, Imaging systems, Data acquisition

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Proceedings Article | 30 January 2012 Paper

Intensity-based modified Doppler variance algorithm dedicated for phase instable optical coherence tomography systems

Gangjun Liu, Wangcun Jia, Danny Chou, Wenjuan Qi, Bernard Choi, Zhongping Chen

Proceedings Volume 8213, 821315 (2012) https://doi.org/10.1117/12.907151

KEYWORDS: Doppler tomography, Optical coherence tomography, Blood vessels, Blood circulation, Imaging systems, Doppler effect, In vivo imaging, Scanners, Mirrors, Spectroscopy

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SPIE Journal Paper | 1 March 2011 Open Access

Fiber-based combined optical coherence and multiphoton endomicroscopy

Gangjun Liu, Zhongping Chen

JBO, Vol. 16, Issue 03, 036010, (March 2011) https://doi.org/10.1117/12.10.1117/1.3555180

KEYWORDS: Signal detection, Fiber couplers, Imaging systems, Coherence (optics), Fiber lasers, Multimode fibers, Endomicroscopy, Biomedical optics, Multiphoton microscopy, Luminescence

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Proceedings Article | 12 February 2011 Paper

High speed swept source based on polygon-scanner filter and Fox-Smith cavity

Pinghe Wang, Jun Zhang, Gangjun Liu, Zhongping Chen

Proceedings Volume 7889, 78892Q (2011) https://doi.org/10.1117/12.875705

KEYWORDS: Optical filters, Optical fibers, Optical coherence tomography, Tunable filters, Mirrors, Electronic filtering, Coherence imaging, Fiber lasers, Telescopes, Semiconductor lasers

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Proceedings Article | 12 February 2011 Paper

Optimized doppler optical coherence tomography for choroidal capillary vasculature imaging

Gangjun Liu, Wenjuan Qi, Lingfeng Yu, Zhongping Chen

Proceedings Volume 7889, 78890J (2011) https://doi.org/10.1117/12.876066

KEYWORDS: Doppler tomography, Optical coherence tomography, Doppler effect, Blood vessels, Image segmentation, Capillaries, Image processing, Blood circulation, Image processing algorithms and systems, In vivo imaging

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Proceedings Article | 11 February 2011 Paper

Multiphoton endoscopy based on a mode-filtered single-mode fiber

Sucbei Moon, Gangjun Liu, Zhongping Chen

Proceedings Volume 7903, 79032P (2011) https://doi.org/10.1117/12.875747

KEYWORDS: Optical filters, Single mode fibers, Endoscopy, Beam delivery, Structured optical fibers, Image filtering, Microscopy, Femtosecond phenomena, Fiber lasers, Multimode fibers

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Proceedings Article | 11 February 2011 Paper

In-vivo three-dimensional Doppler variance imaging for tumor angiogenesis on chorioallantoic membrane

Wenjuan Qi, Gangjun Liu, Zhongping Chen, Nzola De Magalhães

Proceedings Volume 7898, 78980O (2011) https://doi.org/10.1117/12.875186

KEYWORDS: Tumors, Doppler tomography, Optical coherence tomography, Content addressable memory, In vivo imaging, Doppler effect, 3D image processing, Visualization, Capillaries, Image visualization

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Proceedings Article | 10 February 2011 Paper

Fiber-based combined optical coherence and multiphoton microscopy

Gangjun Liu, Zhongping Chen

Proceedings Volume 7892, 78920A (2011) https://doi.org/10.1117/12.874267

KEYWORDS: Imaging systems, Fiber lasers, Multiphoton microscopy, Coherence imaging, Microscopy, Signal detection, Spectroscopy, Coherence (optics), Femtosecond fiber lasers, Light sources

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SPIE Journal Paper | 1 November 2010 Open Access

Spectral Doppler optical coherence tomography imaging of localized ischemic stroke in a mouse model

Lingfeng Yu, Elaine Nguyen, Gangjun Liu, Bernard Choi, Zhongping Chen

JBO, Vol. 15, Issue 06, 066006, (November 2010) https://doi.org/10.1117/12.10.1117/1.3505016

KEYWORDS: Photodynamic therapy, Doppler tomography, Optical coherence tomography, Coherence imaging, Blood circulation, Optical imaging, Ischemic stroke, Resistance, Ischemia, Laser coagulation

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Proceedings Article | 3 March 2010 Paper

Functional Doppler optical coherence tomography for cortical blood flow imaging

Lingfeng Yu, Gangjun Liu, Elaine Nguyen, Bernard Choi, Zhongping Chen

Proceedings Volume 7548, 75483Q (2010) https://doi.org/10.1117/12.842820

KEYWORDS: Doppler tomography, Optical coherence tomography, Blood circulation, Doppler effect, Brain mapping, Ischemic stroke, Tomography, Imaging systems, Resistance, Positron emission tomography

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Proceedings Article | 2 March 2010 Paper

Fiber-based microendoscopic multiphoton imaging

Gangjun Liu, Khanh Kieu, Frank Wise, Brian Wong, Zhongping Chen

Proceedings Volume 7548, 754829 (2010) https://doi.org/10.1117/12.850792

KEYWORDS: Fiber lasers, Microelectromechanical systems, Mirrors, Photonic crystal fibers, Harmonic generation, Two photon excitation microscopy, Luminescence, Microscopes, Dispersion, Cladding

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Proceedings Article | 26 February 2010 Paper

Fiber-based multiphoton system

Gangjun Liu, Khanh Kieu, Frank Wise, Zhongping Chen

Proceedings Volume 7569, 75692J (2010) https://doi.org/10.1117/12.840441

KEYWORDS: Mirrors, Fiber lasers, Microscopes, Signal detection, Dispersion, Scanners, Second-harmonic generation, Imaging systems, Multiphoton microscopy, Photonic crystal fibers

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Proceedings Article | 26 February 2010 Open Access

Scheme for efficient fiber-based CARS probe

Mihaela Balu, Gangjun Liu, Zhongping Chen, Bruce Tromberg, Eric Potma

Proceedings Volume 7569, 75693A (2010) https://doi.org/10.1117/12.855187

KEYWORDS: Tissues, CARS tomography, Signal detection, Single mode fibers, Femtosecond phenomena, Signal generators, Picosecond phenomena, Silica, In vivo imaging, Skin

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Proceedings Article | 20 February 2010 Paper

Adaptive filtering of optical coherent tomography fringe data with ensemble empirical mode decomposition

Gangjun Liu, Jun Zhang, Lingfeng Yu, Zhongping Chen

Proceedings Volume 7554, 75542U (2010) https://doi.org/10.1117/12.841189

KEYWORDS: Optical coherence tomography, Signal to noise ratio, Calibration, Image filtering, Digital filtering, Tomography, Optical filters, Adaptive optics, Data acquisition, Data analysis

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Proceedings Article | 20 February 2010 Paper

Ultra broad band Fourier domain mode locked swept source based on dual SOAs and WDM couplers

Jun Zhang, Gangjun Liu, Zhongping Chen

Proceedings Volume 7554, 75541I (2010) https://doi.org/10.1117/12.843353

KEYWORDS: Optical coherence tomography, Imaging systems, Wavelength division multiplexing, Mode locking, Data acquisition, Tissues, Data processing, Signal processing, Signal to noise ratio, Laser sources

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Proceedings Article | 20 February 2010 Paper

Optical Doppler tomography and spectral Doppler imaging of localized ischemic stroke in a mouse model

Lingfeng Yu, Elaine Nguyen, Gangjun Liu, Bin Rao, Bernard Choi, Zhongping Chen

Proceedings Volume 7554, 75542E (2010) https://doi.org/10.1117/12.843016

KEYWORDS: Doppler tomography, Ischemic stroke, Optical coherence tomography, Blood circulation, Doppler effect, Mouse models, Arteries, Tomography, Resistance, Ultrasonography

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Proceedings Article | 20 February 2010 Paper

In vivo early detection of smoke-induced airway injury using 3-dimensional swept source optical coherence tomography

Jiechen Yin, Gangjun Liu, Jun Zhang, Lingfeng Yu, Sari Mahon, David Mukai, Matthew Brenner, Zhongping Chen

Proceedings Volume 7554, 755408 (2010) https://doi.org/10.1117/12.841346

KEYWORDS: Optical coherence tomography, Injuries, Image processing, 3D image processing, Microelectromechanical systems, Reconstruction algorithms, In vivo imaging, 3D modeling, 3D image reconstruction, Endoscopes

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SPIE Journal Paper | 1 November 2009 Open Access

Office-based dynamic imaging of vocal cords in awake patients with swept-source optical coherence tomography

Lingfeng Yu, Gangjun Liu, Marc Rubinstein, Arya Saidi, Brian Wong, Zhongping Chen

JBO, Vol. 14, Issue 06, 064020, (November 2009) https://doi.org/10.1117/12.10.1117/1.3268442

KEYWORDS: Optical coherence tomography, GRIN lenses, In vivo imaging, Tissues, Head, Imaging systems, Cancer, Biopsy, Mirrors, Light sources

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SPIE Journal Paper | 1 November 2009 Open Access

In vivo early detection of smoke-induced airway injury using three-dimensional swept-source optical coherence tomography

Jiechen Yin, Gangjun Liu, Jun Zhang, Lingfeng Yu, Sari Mahon, David Mukai, Matthew Brenner, Zhongping Chen

JBO, Vol. 14, Issue 06, 060503, (November 2009) https://doi.org/10.1117/12.10.1117/1.3268775

KEYWORDS: Optical coherence tomography, 3D image processing, Injuries, Microelectromechanical systems, Cartilage, Reconstruction algorithms, 3D image reconstruction, In vivo imaging, Image processing, Image quality

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SPIE Journal Paper | 1 November 2009 Open Access

In vivo three-dimensional imaging of normal tissue and tumors in the rabbit pleural cavity using endoscopic swept source optical coherence tomography with thoracoscopic guidance

Tuqiang Xie, Gangjun Liu, Kelly Kreuter, Sari Mahon, Henri Colt, David Mukai, George Peavy, Zhongping Chen, Matthew Brenner

JBO, Vol. 14, Issue 06, 064045, (November 2009) https://doi.org/10.1117/12.10.1117/1.3275478

KEYWORDS: Optical coherence tomography, Tumors, In vivo imaging, Imaging systems, 3D image processing, Endoscopy, Chest, Tissues, GRIN lenses, Lung

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Proceedings Article | 3 March 2009 Paper

Rotational second harmonic generation endoscopy with 1µm fiber laser system

Gangjun Liu, Tuqiang Xie, Lingfeng Yu, Jianping Su, Ivan Tomov, Qiang Wang, Bin Rao, Jun Zhang, Zhongping Chen

Proceedings Volume 7172, 71720O (2009) https://doi.org/10.1117/12.808287

KEYWORDS: Fiber lasers, Endoscopy, Microelectromechanical systems, Harmonic generation, Laser systems engineering, Cladding, Microscopy, Diodes, Second-harmonic generation, Amplifiers

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Proceedings Article | 23 February 2009 Paper

In vivo office-based dynamic imaging of vocal cords in awake patients with swept-source optical coherence tomography

Lingfeng Yu, Gangjun Liu, Marc Rubinstein, Arya Saidi, Shuguang Guo, Brian J. Wong, Zhongping Chen

Proceedings Volume 7161, 716126 (2009) https://doi.org/10.1117/12.823466

KEYWORDS: Optical coherence tomography, In vivo imaging, GRIN lenses, Tissues, Cancer, Mirrors, Endoscopes, Endoscopy, Biopsy, Imaging systems

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Proceedings Article | 20 February 2009 Paper

Office-based laryngeal imaging in awake patients with swept-source optical coherence tomography

Lingfeng Yu, Gangjun Liu, Shuguang Guo, Brian J. F. Wong, Zhongping Chen

Proceedings Volume 7168, 71682A (2009) https://doi.org/10.1117/12.808292

KEYWORDS: Optical coherence tomography, GRIN lenses, Relays, Endoscopy, In vivo imaging, Biopsy, Tissue optics, Endoscopes, Throat, Light sources

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Proceedings Article | 20 February 2009 Paper

3D in vivo swept source endoscopic OCT based on rigid GRIN lens rod probe

Gangjun Liu, Tuqiang Xie, Jun Zhang, George Peavy, Matthew Brenner, Zhongping Chen

Proceedings Volume 7168, 716812 (2009) https://doi.org/10.1117/12.809624

KEYWORDS: Optical coherence tomography, GRIN lenses, In vivo imaging, Endoscopy, 3D image processing, Signal to noise ratio, Mirrors, Tissues, Lung, 3D image reconstruction

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Proceedings Article | 13 February 2009 Paper

Quantitative phase evaluation of dynamic changes on the cell membrane during laser microsurgery

Lingfeng Yu, Samarendra Mohanty, Gangjun Liu, Suzanne Genc, Myung Kim, Zhongping Chen, Michael Berns

Proceedings Volume 7182, 718210 (2009) https://doi.org/10.1117/12.809761

KEYWORDS: Microscopy, Laser microsurgery, Digital holography, Holography, Phase imaging, Laser systems engineering, Image processing, Imaging systems, Digital image correlation, Mirrors

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SPIE Journal Paper | 1 September 2008 Open Access

Quantitative phase evaluation of dynamic changes on cell membrane during laser microsurgery

Lingfeng Yu, Samarendra Mohanty, Gangjun Liu, Suzanne Genc, Zhongping Chen, Michael Berns

JBO, Vol. 13, Issue 05, 050508, (September 2008) https://doi.org/10.1117/12.10.1117/1.2997375

KEYWORDS: Laser microsurgery, Microscopy, Laser systems engineering, Phase imaging, Camera shutters, Laser processing, Mirrors, Objectives, Image processing, Blood

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SPIE Journal Paper | 1 July 2005

Image fusion based on an expectation maximization algorithm

Gang Liu, Zhongliang Jing, Shaoyuan Sun

OE, Vol. 44, Issue 07, 077001, (July 2005) https://doi.org/10.1117/12.10.1117/1.1949427

KEYWORDS: Image fusion, Expectation maximization algorithms, Wavelets, Image processing, Discrete wavelet transforms, Visualization, Optical engineering, Sun, Image visualization, Infrared imaging

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Proceedings Article | 19 November 2003 Paper

Infrared image enhancement based on two-dimensional histogram analysis

Shao-yuan Sun, Zhong-Liang Jing, Zhen-Hua Li, Gang Liu

Proceedings Volume 5203, (2003) https://doi.org/10.1117/12.505590

KEYWORDS: Image enhancement, Image processing, Infrared imaging, Infrared radiation, Image segmentation, Digital imaging, Image processing algorithms and systems, Image quality, Image contrast enhancement, Statistical analysis

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SPIE Journal Paper | 1 October 2003

Three-core nonlinear directional coupler with variable coupling coefficient

Gang Liu, Binming Liang, Qu Li, Guo Liang Jin

OE, Vol. 42, Issue 10, (October 2003) https://doi.org/10.1117/12.10.1117/1.1604398

KEYWORDS: Voltage controlled current source, Current controlled current source, Switching, Directional couplers, Waveguides, Nonlinear optics, Optical engineering, Modulation, Lithium, Physics

Proceedings Article | 28 August 2002 Paper

Optical waveguide rapidly tunable filter

Binming Liang, Gangjun Liu, Yuan Song, Guoliang Jin, Qu Li

Proceedings Volume 4904, (2002) https://doi.org/10.1117/12.481240

KEYWORDS: Waveguides, Tunable filters, Optical filters, Networks, Beam propagation method, Mach-Zehnder interferometers, Electro optics, Electrodes, Lithium niobate, Optical networks

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Showing 5 of 41 publications

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