Dr. Sijin Wu Profile

Dr. Sijin Wu

Associate Professor at Beijing Information Science & Technology Univ

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Publications (9)

SPIE Journal Paper | 12 April 2023 Open Access

Evaluation of residual cognition in patients with disorders of consciousness based on functional near-infrared spectroscopy

Juanning Si, Yi Yang, Long Xu, Tianshuai Xu, Hao Liu, Yujin Zhang, Rixing Jing, Jinglian Li, Dongdong Wang, Sijin Wu, Jianghong He

NPh, Vol. 10, Issue 02, 025003, (April 2023) https://doi.org/10.1117/12.10.1117/1.NPh.10.2.025003

KEYWORDS: Hemodynamics, Consciousness, Cognition, Neurological disorders, Brain, Neurophotonics, Traumatic brain injury, Neuroimaging, Near infrared spectroscopy, Functional magnetic resonance imaging

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SignificanceAccurate evaluation of consciousness in patients with prolonged disorders of consciousness (DOC) is critical for designing therapeutic plans, determining rehabilitative services, and predicting prognosis. Effective ways for detecting consciousness in patients with DOC are still needed.AimEvaluation of the residual awareness in patients with DOC and investigation of the spatiotemporal differences in the hemodynamic responses between the minimally conscious state (MCS) and the unresponsive wakefulness syndrome (UWS) groups using active command-driven motor imagery (MI) tasks.ApproachIn this study, functional near-infrared spectroscopy (fNIRS) was used to measure the changes of hemodynamic responses in 19 patients with DOC (9 MCS and 10 UWS) using active command-driven MI tasks. The characteristics of the hemodynamic responses were extracted to compare the differences between the MCS and UWS groups. Moreover, the correlations between the hemodynamic responses and the clinical behavioral evaluations were also studied.ResultsThe results showed significant differences in the spatiotemporal distribution of the hemodynamic responses between the MCS and UWS groups. For the patients with MCS, significant increases in task-evoked hemodynamic responses occurred during the “YES” questions of the command-driven MI tasks. Importantly, these changes were significantly correlated with their coma-recovery scale-revised (CRS-R) scores. However, for the patients with UWS, no significant changes of the hemodynamic responses were found. Additionally, the results did not show any statistical correlation between the hemodynamic responses and their CRS-R scores.ConclusionsThe fNIRS-based command-driven MI tasks can be used as a promising tool for detecting residual awareness in patients with DOC. We hope that the findings and the active paradigm used in this study will provide useful insights into the diagnosis, therapy, and prognosis of this challenging patient population.

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Proceedings Article | 19 December 2022 Presentation + Paper

Calibration of digital speckle pattern interferometry based on three-axis angle motions measurement theory

Yang Yan, Sijin Wu, Lili Shi, Weixian Li, Juanning Si, Haisha Niu

Proceedings Volume 12319, 123190L (2022) https://doi.org/10.1117/12.2642029

KEYWORDS: Calibration, Interferometers, Motion measurement, Phase shifts, Speckle pattern, Interferometry, Optical testing

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SPIE Journal Paper | 4 March 2021

Simultaneous and precision measurement of yaw and pitch using digital speckle pattern interferometry

Fan Wu, Sijin Wu, Weixian Li, Xin Li

OE, Vol. 60, Issue 03, 034103, (March 2021) https://doi.org/10.1117/12.10.1117/1.OE.60.3.034103

KEYWORDS: Precision measurement, Speckle, Optical engineering, Interferometry, Speckle pattern, Motion measurement, Autocollimators, Reflection, Motion models, Error analysis

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Proceedings Article | 13 November 2019 Paper

Precision measurement of angle using digital speckle pattern interferometry

Fan Wu, Sijin Wu, Weixian Li, Xin Li

Proceedings Volume 11343, 113431H (2019) https://doi.org/10.1117/12.2548726

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Proceedings Article | 7 March 2019 Paper

Precise measurement of large roll angle using digital speckle pattern interferometry

Jing Yang, Sijin Wu, Weixian Li, Fan Wu, Ji Liu, Lianxiang Yang

Proceedings Volume 11053, 1105343 (2019) https://doi.org/10.1117/12.2512422

KEYWORDS: Interferometry, Interferometers, Speckle pattern, Sensors, Optical interferometry, Mathematical modeling

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SPIE Journal Paper | 15 June 2017

Spatial carrier color digital speckle pattern interferometry for absolute three-dimensional deformation measurement

Xinya Gao, Yonghong Wang, Junrui Li, Xizuo Dan, Sijin Wu, Lianxiang Yang

OE, Vol. 56, Issue 06, 066107, (June 2017) https://doi.org/10.1117/12.10.1117/1.OE.56.6.066107

KEYWORDS: Speckle pattern, Interferometry, Imaging systems, System integration, Cameras, Speckle, Interferometers, Aluminum

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SPIE Journal Paper | 1 April 2016

Synchronous measurement of three-dimensional deformations by multicamera digital speckle patterns interferometry

Yonghong Wang, Jianfei Sun, Junrui Li, Xingya Gao, Sijin Wu, Lianxiang Yang

OE, Vol. 55, Issue 09, 091408, (April 2016) https://doi.org/10.1117/12.10.1117/1.OE.55.9.091408

KEYWORDS: Cameras, Speckle pattern, Interferometry, Digital image correlation, 3D metrology, Imaging systems, CCD cameras, Fourier transforms, CCD image sensors, Holograms

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Proceedings Article | 6 March 2015 Paper

Investigation of hidden diffuse surfaces using phase-shifting endoscopic digital speckle pattern interferometry

Yan Gao, Sijin Wu, Lianqing Zhu, Lianxiang Yang

Proceedings Volume 9446, 94463J (2015) https://doi.org/10.1117/12.2181384

KEYWORDS: Endoscopy, Phase shifts, Speckle pattern, Beam splitters, Interferometry, Speckle, Cameras, Ferroelectric materials, Image processing, Nondestructive evaluation

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SPIE Journal Paper | 8 April 2013 Open Access

Real-time monitoring of phase maps of digital shearography

Lianqing Zhu, Yonghong Wang, Nan Xu, Sijin Wu, Mingli Dong, Lianxiang Yang

OE, Vol. 52, Issue 10, 101902, (April 2013) https://doi.org/10.1117/12.10.1117/1.OE.52.10.101902

KEYWORDS: Shearography, Nondestructive evaluation, Phase shifts, Fringe analysis, Cameras, Phase measurement, Speckle, Inspection, Mirrors, Spatial resolution

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