Dr. Zhong Ren Profile

Dr. Zhong Ren

Professor at Jiangxi Science and Technology Normal Univ

SPIE Involvement:

Author

Publications (70)

Proceedings Article | 10 May 2023 Paper

Optimization of the optical coupling efficiency of fiber with Gaussian pulsed laser

Junli Wu, Zhong Ren, Chengxin Xiong, Wenping Peng, Tao Liu

Proceedings Volume 12554, 1255413 (2023) https://doi.org/10.1117/12.2651401

KEYWORDS: Fiber couplers, Single mode fibers, Collimation, Optical fibers, Fiber coupled lasers, Photoacoustic microscopy, Fiber lasers, Beam diameter, Light sources, Structured optical fibers

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Proceedings Article | 4 April 2023 Paper

Sweetness classification of apple based on VIS spectroscopy combined with particle swarm optimized BP neural network

Wenping Peng, Junli Wu, Chengxin Xiong, Longjuan Liu, Tao Liu, Mingbin Zhou, Zhong Ren

Proceedings Volume 12617, 126170M (2023) https://doi.org/10.1117/12.2663147

KEYWORDS: Neural networks, Neurons, Particles, Evolutionary algorithms, Particle swarm optimization, Visible radiation, Spectroscopy, Absorption, Absorbance, Signal processing

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Proceedings Article | 19 December 2022 Poster + Paper

Photoacoustic qualitative classification of blood glucose with multiple factors based on BP neural network

Chengxin Xiong, Wenping Peng, Junli Wu, Gaoqiang Liang, Bingheng Sun, Tao Liu, Zhong Ren

Proceedings Volume 12320, 123201O (2022) https://doi.org/10.1117/12.2641772

KEYWORDS: Blood, Glucose, Photoacoustic spectroscopy, Neural networks, Neurons, Laser energy, Tissue optics, Ultrasonics, Evolutionary algorithms, Absorption

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Proceedings Article | 16 December 2022 Paper

Sweetness quantitative spectral measurement of apple based on visible light spectroscopy combined with BP neural network

Wenping Peng, Chengxin Xiong, Junli Wu, Tao Liu, Mingbin Zhou, Zhong Ren

Proceedings Volume 12501, 1250103 (2022) https://doi.org/10.1117/12.2644409

KEYWORDS: Neural networks, Spectroscopy, Visible radiation, Neurons, Evolutionary algorithms, Absorption, Absorbance, Tongue, Solids, Near infrared spectroscopy

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Proceedings Article | 15 December 2022 Paper

Effects of aspheric lens parameters on the coupling efficiency of fiber with Gaussian pulsed laser

Junli Wu, Yi Li, Zhong Ren, Chengxin Xiong, Wenping Peng, Tao Liu

Proceedings Volume 12478, 124781A (2022) https://doi.org/10.1117/12.2653112

KEYWORDS: Fiber couplers, Aspheric lenses, Photoacoustic microscopy, Single mode fibers, Pulsed laser operation, Imaging systems, Optical fibers, Fiber coupled lasers, Structured optical fibers, Light sources

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Proceedings Article | 15 November 2022 Paper

Photoacoustic discrimination of blood based on BP-PSO algorithm combined with improved dynamic inertia weight strategy function

Zhong Ren, Tao Liu, Chengxin Xiong, Wenping Peng, Junli Wu

Proceedings Volume 12448, 124481P (2022) https://doi.org/10.1117/12.2626668

KEYWORDS: Blood, Photoacoustic spectroscopy, Neurons, Particles, Particle swarm optimization, Ultrasonics, Silicon, Transducers, Neural networks, Pulsed laser operation

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Proceedings Article | 26 October 2022 Paper

Photoacoustic blood glucose multiple factors measurement based on BP neural network algorithm

Chengxin Xiong, Tao Liu, Wenping Peng, Junli Wu, Zhong Ren

Proceedings Volume 12461, 1246102 (2022) https://doi.org/10.1117/12.2645386

KEYWORDS: Blood, Glucose, Photoacoustic spectroscopy, Neural networks, Neurons, Evolutionary algorithms, Ultrasonics, Laser energy, Tissue optics, Pulsed laser operation

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Proceedings Article | 27 March 2022 Paper

Photoacoustic identification of blood via BP combined with particle swarm optimization algorithm

Wenping Peng, Tao Liu, Junli Wu, Chengxin Xiong, Mingbin Zhou, Zhong Ren

Proceedings Volume 12169, 1216963 (2022) https://doi.org/10.1117/12.2624677

KEYWORDS: Blood, Photoacoustic spectroscopy, Particles, Particle swarm optimization, Ultrasonics, Neurons, Neural networks, Transducers, Silicon, Pulsed laser operation

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Proceedings Article | 27 March 2022 Paper

Blood discrimination based on NIR spectroscopy and BP neural network combined with genetic algorithm

Yibin Hou, Junli Wu, Chengxin Xiong, Tao Liu, Zhong Ren

Proceedings Volume 12169, 121692L (2022) https://doi.org/10.1117/12.2623013

KEYWORDS: Blood, Neurons, Near infrared, Neural networks, Spectroscopy, Near infrared spectroscopy, Evolutionary algorithms, Genetic algorithms, Raman spectroscopy, Fluorescence spectroscopy

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Proceedings Article | 24 November 2021 Paper

The effect of central frequency of ultrasonic transducer on the glucose detection based on photoacoustic spectroscopy

Chengxin Xiong, Zhong Ren, Tao Liu, Junli Wu, Xinyi Shen

Proceedings Volume 12066, 120660B (2021) https://doi.org/10.1117/12.2602295

KEYWORDS: Glucose, Photoacoustic spectroscopy, Ultrasonics, Transducers, Blood, Pulsed laser operation, Tissue optics, Optical parametric oscillators, Laser energy, Silicon

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The non-invasive detection of blood glucose based on photoacoustic spectroscopy is a very popular method used to monitor the diabetes mellitus in recent years. The basic mechanism of photoacoustic spectroscopy is the effect of photo-induced ultrasonic. The detection accuracy of blood glucose can be improved due to the captured ultrasonic rather than the photons. The properties of ultrasonic transducer is one of the important influence factors on the detection accuracy of glucose. To study the effect of detection frequency for ultrasonic transducer on the glucose detection based on photoacoustic spectroscopy, a set of photoacoustic detection system was established. The optical parameters oscillator (OPO) pulsed laser pumped with 532nm was used as the excitation light source. Three kinds of ultrasonic transducers with different central echo frequencies (1MHz, 2.5MHz, and 30MHz) were respectively used to capture the photoacoustic signal of test blood phantoms with different concentrations of glucose. The time-resolved photoacoustic signal and peak-to-peak values of test blood phantoms were obtained. The results show that with the increase of glucose concentration, the photoacoustic amplitudes and peak-to-peak values of phantoms increase. Moreover, the time of photoacoustic signal shifts left with the increase of concentration. The prediction models based on linear fitting method were established for three kinds of ultrasonic transducers. Prediction results show that for the ultrasonic transducer with central frequency of 1MHz, the correction coefficient is 0.8681, the root-mean-square error (RMSE) of glucose concentration is about 13.3%. For the ultrasonic transducer with central frequency of 2.5MHz, the correction coefficient is 0.83127, the RMSE of glucose concentration is about 1.8149%. For the ultrasonic transducer with central frequency of 30MHz, the correction coefficient is 0.99598, the RMSE of glucose concentration is about 0.3808%. Therefore, the detection effect of the ultrasonic transducer with central frequency of 30MHz is best compared with the two others.

Proceedings Article | 24 November 2021 Paper

Discrimination and classification of true or mock blood based on photoacoustic spectroscopy combined with support vector machine

Zhong Ren, Junli Wu, Chengxin Xiong, Tao Liu

Proceedings Volume 12067, 1206702 (2021) https://doi.org/10.1117/12.2602296

KEYWORDS: Blood, Photoacoustic spectroscopy, Principal component analysis, Pulsed laser operation, Ultrasonics, Tissue optics, Transducers, Optical parametric oscillators, Signal detection, Luminescence

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Proceedings Article | 1 November 2021 Paper

Recognition of authentic or false blood based on NIR spectroscopy and PCA-WNN-PSO algorithm

Junli Wu, Zhong Ren, Tao Liu, Chengxin Xiong

Proceedings Volume 12057, 120571L (2021) https://doi.org/10.1117/12.2605119

KEYWORDS: Blood, Detection and tracking algorithms, Near infrared spectroscopy, Near infrared, Neurons, Spectroscopy, Particle swarm optimization, Wavelets, Principal component analysis, Particles

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Proceedings Article | 9 October 2021 Paper

Distinction of true and fake blood based on near infrared spectroscopy and wavelet neural networks

Zhong Ren, Tao Liu, Guodong Liu

Proceedings Volume 11900, 119001M (2021) https://doi.org/10.1117/12.2600492

KEYWORDS: Blood, Neurons, Near infrared, Wavelets, Near infrared spectroscopy, Neural networks, Spectroscopy, Principal component analysis, Photoacoustic spectroscopy, Fourier transforms

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Proceedings Article | 31 August 2021 Paper

Blood identification of NIR spectroscopy based on BP neural network combined with particle swarm optimization

Zhong Ren, Tao Liu

Proceedings Volume 11907, 119070W (2021) https://doi.org/10.1117/12.2602388

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Proceedings Article | 12 March 2021 Paper

Identification of true or false blood based on photoacoustic spectroscopy combined with LDA-iPLS algorithm

Zhong Ren, Tao Liu, Guodong Liu

Proceedings Volume 11763, 117632J (2021) https://doi.org/10.1117/12.2586395

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Proceedings Article | 28 February 2021 Paper

Distinction of true or fake blood based on photoacoustic spectroscopy combined with artificial intelligence algorithms

Zhong Ren, Tao Liu, Guodong Liu

Proceedings Volume 11781, 117811S (2021) https://doi.org/10.1117/12.2590696

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Proceedings Article | 4 December 2020 Paper

Photoacoustic detection of glucose for the milk-glucose mixed solution

Tao Liu, Zhong Ren, Guodong Liu, Chuncheng Zhang

Proceedings Volume 11617, 1161704 (2020) https://doi.org/10.1117/12.2584202

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In this study, the glucose was detected by using the photoacoustic spectroscopy method for the milk-glucose mixed solutions. To achieve the purpose, a kind of photoacoustic detection system of glucose was established by using the OPO pulsed laser. Meanwhile, a focused ultrasonic detector with central echo frequency of 2.5MHz was used to capture the photoacoustic signals of glucose. And a kind of custom-built cycling sub-system used to analogy the flow system of pure blood in the vessel of human being. In experiments, a series of mixed solutions with different concentrations of milk and glucose were prepared and excitated by the pulsed laser beam with the wavelength of 1064nm and the output energy about 1mJ. The time-resolved photoacoustic signals, the peak-to-peak values and peak-point times for the mixed solutions with different concentrations were all obtained. Experimental results show that with the increase of the concentration of milk and glucose, the peak times decrease, i.e., the ultrasonic velocity increases. For the mixed solutions with fixed concentration of milk but different concentrations of glucose, the photoacoustic peak-to-peak values of glucose increases with the increase of the glucose concentration. However, for the mixed solutions with fixed concentration of glucose but different concentrations of milk, the photoacoustic peak-to-peak value of glucose decreases with the increase of milk concentration. The results can be interpreted by the reason that the light absorbance of glucose is decreased by the increase of the milk concentration due to the increase of the light-scattering effect in the turbid solutions. The prediction models of glucose were built for the different mixed solution for the milk and glucose. Then, the prediction correlation coefficients and root-mean-square error (RMSE) values were also gotten. Results show the correlation coefficient can reach 0.986 in the milk-glucose mixed solutions, and the smallest RMSE value is about 18.24mg/dl .

Proceedings Article | 2 December 2020 Paper

Effects of detection distance on the photoacoustic detection of glucose and concentration prediction

Zhong Ren, Tao Liu, Guodong Liu, Chuncheng Zhang

Proceedings Volume 11717, 117170Q (2020) https://doi.org/10.1117/12.2585258

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Proceedings Article | 8 November 2020 Poster + Paper

Distinction of bloods based on photoacoustic spectroscopy combined with PCA-LDA algorithm

Zhong Ren, Tao Liu, Guodong Liu

Proceedings Volume 11525, 115252L (2020) https://doi.org/10.1117/12.2584032

KEYWORDS: Blood, Photoacoustic spectroscopy, Principal component analysis, Ultrasonics, Transducers, Pulsed laser operation, Oscillators, Optical parametric oscillators

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Proceedings Article | 5 November 2020 Paper

Combined effect of multiple factors on the photoacoustic detection of glucose solution based on neural networks

Tao Liu, Zhong Ren, Chuncheng Zhang, Guodong Liu

Proceedings Volume 11566, 115660W (2020) https://doi.org/10.1117/12.2575969

KEYWORDS: Glucose, Photoacoustic spectroscopy, Neurons, Pulsed laser operation, Ultrasonics, Blood, Neural networks, Tissue optics, Thermal effects

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Proceedings Article | 10 October 2020 Poster + Paper

Effects of multiple factors on photoacoustic detection of glucose based on back propagation neural network combined with intelligent optimization algorithms

Zhong Ren, Tao Liu, Guodong Liu

Proceedings Volume 11553, 115531W (2020) https://doi.org/10.1117/12.2573568

KEYWORDS: Glucose, Photoacoustic spectroscopy, Particles, Neurons, Particle swarm optimization, Optimization (mathematics), Neural networks, Ultrasonics, Pulsed laser operation

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Proceedings Article | 12 March 2020 Paper

Research on vascular recognition technology based on photoacoustic imaging

Guodong Liu, Chuncheng Zhang, Zhihua Xie, Qingkai Yao, Zhong Ren, Le Wang

Proceedings Volume 11434, 114340R (2020) https://doi.org/10.1117/12.2543546

KEYWORDS: Photoacoustic spectroscopy, Photoacoustic imaging, Imaging systems

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Proceedings Article | 12 March 2020 Paper

Photoacoustic detection of glucose based on the pulsed laser induced ultrasonic combined with scanning position method

Zhong Ren, Guodong Liu, Chuncheng Zhang, Lvming Zeng, Yu Ding

Proceedings Volume 11438, 1143804 (2020) https://doi.org/10.1117/12.2540917

KEYWORDS: Photoacoustic spectroscopy, Glucose, Silicon, Blood, Silica, Ultrasonics, Carbon, Pulsed laser operation, Optical parametric oscillators, Silicon carbide

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In order to accurately measure the glucose concentration, the photoacoustic spectroscopy combined with the scanning position method was used in this paper. Meanwhile, a kind of custom-built photoacoustic detection system was established. In this system, a 532nm pumped OPO pulsed laser was used as the excitation source, and a non-focused ultrasonic detector was used to capture the photoacoustic signals of phantom and glucose. To improve the measurement accuracy of glucose by using the photoacoustic spectroscopy, a scanning sub-system was established to accurately locate the position of the simulated vessel. In the experiments, to simulate the bio-tissue and the blood vessel in human body, a specimen made of agar block with a carbon bar and a silicon gel pipe was prepared to verify the availability and feasibility of the established photoacoustic detection system. According to the obtained photoacoustic peak-to-peak values of the specimen by scanning method, the position of the carbon bar and the silicon gel pipe in the specimen can be located. Then, to test the photoacoustic detection of glucose in the silicon gel pipe, a cycling sub-system was used to simulate the blood flow in the blood vessel. Based on the located position of the silica gel pipe, the focused laser spot was shifted and accurately irradiated into the silica gel pipe to induce the photoacoustic signals of glucose. By mean of the photoacoustic system, several different concentrations of glucose solutions were test, and the time-resolved photoacoustic signals and peak-to-peak values of glucose are all obtained. The prediction model of glucose concentration was established by using the linear fitting method. At the same time, the predicted result was compared with that of the glucose in the agar specimen. Results show that the novel photoacoustic detection of glucose is available. The correction coefficient of the glucose concentration prediction was improved by using the photoacoustic spectroscopy combined with the scanning position method.

Proceedings Article | 18 December 2019 Paper

Photoacoustic detection and glucose concentration prediction of solutions mixed glucose with salt based on OPO pulsed laser excitation

Zhong Ren, Guodong Liu

Proceedings Volume 11337, 113370C (2019) https://doi.org/10.1117/12.2542222

KEYWORDS: Glucose, Photoacoustic spectroscopy, Ultrasonics, Pulsed laser operation, Optical parametric oscillators, Transducers, Blood, Tissues, Light scattering, Telecommunications

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Proceedings Article | 20 November 2019 Paper

Determination of photoacoustic glucose characteristic wavelengths based on synergy interval partial least square algorithm

Zhong Ren, Guodong Liu

Proceedings Volume 11190, 1119022 (2019) https://doi.org/10.1117/12.2537265

KEYWORDS: Glucose, Photoacoustic spectroscopy, Absorption, Detection and tracking algorithms, Blood, Optical parametric oscillators, Pulsed laser operation, Ultrasonics, Sensors, Calibration

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Proceedings Article | 17 May 2019 Paper

Effect of salt content on the photoacoustic detection of glucose solutions

Zhong Ren, Guodong Liu

Proceedings Volume 11170, 1117003 (2019) https://doi.org/10.1117/12.2531149

KEYWORDS: Glucose, Photoacoustic spectroscopy, Ultrasonics, Blood, Pulsed laser operation, Transducers, Optical parametric oscillators, Tissue optics, Absorption, Oscilloscopes

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Proceedings Article | 18 January 2019 Paper

Study on the effects of multiple factors on the photoacoustic detection of glucose

Zhong Ren, Guodong Liu, Yu Ding

Proceedings Volume 10839, 108390J (2019) https://doi.org/10.1117/12.2504912

KEYWORDS: Glucose, Photoacoustic spectroscopy, Pulsed laser operation, Laser energy, Ultrasonics, Blood, Transducers, Signal detection, Optical parametric oscillators, Tissue optics

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Proceedings Article | 15 November 2018 Paper

Determination of the characteristic wavelengths of photoacoustic glucose signals based on interval partial least square algorithm

Zhong Ren, Guodong Liu, Zhen Huang

Proceedings Volume 10964, 1096409 (2018) https://doi.org/10.1117/12.2504063

KEYWORDS: Glucose, Photoacoustic spectroscopy, Signal detection, Pulsed laser operation, Ultrasonics, Absorption, Raman spectroscopy, Tissue optics, Transducers, Near infrared spectroscopy

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Proceedings Article | 23 October 2018 Paper

Effects of multiple factors on the photoacoustic detection of glucose based on artificial neural network

Zhong Ren, Guodong Liu, Yu Ding

Proceedings Volume 10820, 108201E (2018) https://doi.org/10.1117/12.2500278

KEYWORDS: Glucose, Photoacoustic spectroscopy, Pulsed laser operation, Blood, Neurons, Ultrasonics, Laser energy, Tissue optics, Artificial neural networks, Signal detection

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Proceedings Article | 12 January 2018 Paper

Effect of flow velocity on the photoacoustic detection for glucose aqueous solutions

Zhong Ren, Guodong Liu, Yu Ding, Qingkai Yao

Proceedings Volume 10621, 1062125 (2018) https://doi.org/10.1117/12.2300545

KEYWORDS: Photoacoustic spectroscopy, Glucose, Blood, Ultrasonics, Pulsed laser operation, Transducers, Blood circulation, Optical parametric oscillators, Nd:YAG lasers, Signal detection

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Proceedings Article | 24 October 2017 Paper

Photoacoustic experiments of glucose aqueous solution based on pulsed laser induced ultrasonic technique

Zhong Ren, Guodong Liu, Zheng Huang, Yu Ding

Proceedings Volume 10461, 1046103 (2017) https://doi.org/10.1117/12.2281312

KEYWORDS: Photoacoustic spectroscopy, Pulsed laser operation, Ultrasonics, Glucose, Sensors

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Proceedings Article | 24 October 2017 Paper

The effects of pulsed laser parameters on the photoacoustic detection of glucose aqueous solution

Zhong Ren, Guodong Liu, Zhen Huang, Lvming Zeng

Proceedings Volume 10457, 1045702 (2017) https://doi.org/10.1117/12.2281313

KEYWORDS: Photoacoustic spectroscopy, Glucose, Pulsed laser operation

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Proceedings Article | 1 August 2017 Paper

Study on imaging reconstruction based on filtered back-projection combined with a modified shift-invariant wavelet threshold method

Zhong Ren, Guodong Liu

Proceedings Volume 10339, 103391J (2017) https://doi.org/10.1117/12.2269389

KEYWORDS: Wavelets, Reconstruction algorithms, Denoising, Image filtering, Image quality, Electronic filtering, Image restoration, Signal to noise ratio, Biomedical optics, Single photon emission computed tomography

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Proceedings Article | 1 August 2017 Paper

Discrimination of the glucose and the white sugar based on the pulsed laser-induced photoacoustic technique

Zhong Ren, Guodong Liu

Proceedings Volume 10339, 103391K (2017) https://doi.org/10.1117/12.2269390

KEYWORDS: Photoacoustic spectroscopy, Glucose, Pulsed laser operation, Ultrasonics, Transducers, Neodymium, Nd:YAG lasers, Light sources, Signal detection, Digital photography

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Proceedings Article | 4 November 2016 Paper

Study on glucose photoacoustic signals denoising based on a modified wavelet shift-invariance thresholding method

Zhong Ren, Guodong Liu

Proceedings Volume 10026, 1002613 (2016) https://doi.org/10.1117/12.2245531

KEYWORDS: Wavelets, Denoising, Photoacoustic spectroscopy, Glucose, Blood, Interference (communication), Signal to noise ratio, Computer simulations, Linear filtering, Digital filtering

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Proceedings Article | 31 October 2016 Paper

Studies on filtered back-projection imaging reconstruction based on a modified wavelet threshold function

Zhengzi Wang, Zhong Ren, Guodong Liu

Proceedings Volume 10020, 100200X (2016) https://doi.org/10.1117/12.2245528

KEYWORDS: Wavelets, Image filtering, Reconstruction algorithms, Biomedical optics, Image quality, Denoising, Image restoration, MATLAB, Stereolithography, Wavelet transforms

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Proceedings Article | 19 October 2016 Paper

Filtered back-projection reconstruction of photo-acoustic imaging based on an modified wavelet threshold function

Zhong Ren, Guodong Liu, Zhen Huang

Proceedings Volume 10155, 101550D (2016) https://doi.org/10.1117/12.2243976

KEYWORDS: Photoacoustic spectroscopy, Wavelets, Glucose, Denoising, Signal to noise ratio

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Proceedings Article | 19 October 2016 Paper

Photoacoustic signals denoising of the glucose aqueous solutions using an improved wavelet threshold method

Zhong Ren, Guodong Liu, Zhihua Xiong

Proceedings Volume 10153, 101530A (2016) https://doi.org/10.1117/12.2244281

KEYWORDS: Photoacoustic spectroscopy, Wavelets, Glucose, Denoising, Signal to noise ratio

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Proceedings Article | 27 September 2016 Paper

Development of glucose measurement system based on pulsed laser-induced ultrasonic method

Zhong Ren, Bin Wan, Guodong Liu, Zhihua Xiong

Proceedings Volume 9684, 96842G (2016) https://doi.org/10.1117/12.2241490

KEYWORDS: Glucose, Pulsed laser operation, Ultrasonics, Photoacoustic spectroscopy, Transducers, Signal detection, Optical parametric oscillators, Light sources, Nd:YAG lasers, Neodymium

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Proceedings Article | 15 October 2015 Paper

Study on an improved wavelet shift-invariant threshold denoising for pulsed laser induced glucose photoacoustic signals

Zhengzi Wang, Zhong Ren, Guodong Liu

Proceedings Volume 9674, 967407 (2015) https://doi.org/10.1117/12.2196917

KEYWORDS: Wavelets, Denoising, Glucose, Photoacoustic spectroscopy, Signal detection, Blood, Interference (communication), Signal to noise ratio, Pulsed laser operation, Ultrasonics

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Proceedings Article | 7 August 2015 Paper

Glucose concentration measurement using photoacoustic technique

Zhen Huang, Guodong Liu, Zhong Ren, Lvming Zeng

Proceedings Volume 9623, 96230L (2015) https://doi.org/10.1117/12.2185819

KEYWORDS: Glucose, Photoacoustic spectroscopy, Pulsed laser operation, Absorption, Blood, Signal detection, Signal processing, Tunable lasers, Optical parametric oscillators, Digital signal processing

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Proceedings Article | 5 August 2015 Paper

Study on an improved wavelet threshold denoising for the time-resolved photoacoustic signals of the glucose solution

Zhong Ren, Guodong Liu, Zhen Huang

Proceedings Volume 9619, 96190L (2015) https://doi.org/10.1117/12.2189980

KEYWORDS: Wavelets, Denoising, Glucose, Photoacoustic spectroscopy, Interference (communication), Blood, Electronic filtering, Signal detection, Signal to noise ratio, Filtering (signal processing)

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Proceedings Article | 5 August 2015 Paper

Determination of glucose concentration based on pulsed laser induced photoacoustic technique and least square fitting algorithm

Zhong Ren, Guodong Liu, Zhen Huang

Proceedings Volume 9619, 96190M (2015) https://doi.org/10.1117/12.2190601

KEYWORDS: Glucose, Photoacoustic spectroscopy, Pulsed laser operation, Signal detection, Blood, Ultrasonics, Transducers, Light scattering, Raman spectroscopy, Acoustics

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Proceedings Article | 14 July 2015 Paper

Study on a splitting-light optical system for spectrometer

Zhong Ren, Guodong Liu, Zhen Huang, Zhihua Xiong

Proceedings Volume 9532, 95321P (2015) https://doi.org/10.1117/12.2185788

KEYWORDS: Diffraction gratings, Spectroscopy, Diffraction, Optical design, Imaging systems, Spectral resolution, Holography, Charge-coupled devices, Mercury, Lamps

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Proceedings Article | 14 July 2015 Paper

Experiments of glucose solution measurement based on the tunable pulsed laser induced photoacoustic spectroscopy method

Zhong Ren, Guodong Liu, Zhihua Xiong, Zhen Huang

Proceedings Volume 9532, 95321Q (2015) https://doi.org/10.1117/12.2185787

KEYWORDS: Photoacoustic spectroscopy, Glucose, Signal detection, Pulsed laser operation, Acoustics, Tunable lasers, Transducers, Blood, Ultrasonics, Laser spectroscopy

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Proceedings Article | 3 December 2014 Paper

Noninvasive detection of glucose level based on tunable pulsed laser induced photoacoustic technique

Zhong Ren, Guodong Liu, Zhen Huang

Proceedings Volume 9297, 929709 (2014) https://doi.org/10.1117/12.2069636

KEYWORDS: Photoacoustic spectroscopy, Glucose, Signal detection, Pulsed laser operation, Acoustics, Transducers, Tunable lasers, Blood, Ultrasonics, Optical parametric oscillators

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Proceedings Article | 24 November 2014 Paper

Improvement of wavelet threshold filtered back-projection image reconstruction algorithm

Zhong Ren, Guodong Liu, Zhen Huang

Proceedings Volume 9301, 93010G (2014) https://doi.org/10.1117/12.2069632

KEYWORDS: Reconstruction algorithms, Wavelets, Image filtering, Denoising, Image restoration, Stereolithography, Fourier transforms, Image processing, Interference (communication), Signal to noise ratio

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Proceedings Article | 18 November 2014 Paper

Design of a novel noninvasive spectrometer for pesticide residues monitor

Zhong Ren, Guodong Liu, Zhen Huang

Proceedings Volume 9298, 929807 (2014) https://doi.org/10.1117/12.2069656

KEYWORDS: Spectroscopy, Charge-coupled devices, Diffraction gratings, Data acquisition, Diffraction, Lamps, Chromatography, Holography, Optical amplifiers, LabVIEW

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Proceedings Article | 5 November 2014 Paper

Design and optimization of optical system for a spectrometer based on VPHT grating

Zhong Ren, Guodong Liu, Zhen Huang, Zhihua Xiong

Proceedings Volume 9272, 92720X (2014) https://doi.org/10.1117/12.2070845

KEYWORDS: Diffraction gratings, Spectroscopy, Diffraction, Optical design, Holography, Collimation, Spectral resolution, Calibration, Charge-coupled devices, Silica

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Proceedings Article | 29 October 2014 Paper

Application of time-resolved glucose concentration photoacoustic signals based on an improved wavelet denoising

Zhong Ren, Guodong Liu, Zhen Huang

Proceedings Volume 9273, 92733G (2014) https://doi.org/10.1117/12.2070843

KEYWORDS: Wavelets, Denoising, Photoacoustic spectroscopy, Interference (communication), Signal to noise ratio, Glucose, Blood, Detection theory, Linear filtering, Digital filtering

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Proceedings Article | 17 September 2014 Paper

In vitro determination of glucose concentration based on photoacoustic spectroscopy and chemometrics

Zhong Ren, Guodong Liu, Zhen Huang

Proceedings Volume 9230, 923004 (2014) https://doi.org/10.1117/12.2066975

KEYWORDS: Photoacoustic spectroscopy, Glucose, Signal detection, Pulsed laser operation, Light scattering, Ultrasonography, Transducers, Acoustics, Chemometrics, In vitro testing

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Proceedings Article | 6 August 2014 Paper

Stray light analysis for optical splitting system of micro-biochemical analyzer

Zhen Huang, Guodong Liu, Zhong Ren, Lvming Zeng

Proceedings Volume 9281, 928126 (2014) https://doi.org/10.1117/12.2067744

KEYWORDS: Stray light, Sensors, Light, Light sources, Ray tracing, Diffraction, Lamps, Diffraction gratings, Halogens, Biological research

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Proceedings Article | 6 August 2014 Paper

Design of optical system for spectrometer involving a volume phase holographic transmission grating

Zhong Ren, Guodong Liu, Zhen Huang

Proceedings Volume 9281, 928125 (2014) https://doi.org/10.1117/12.2067743

KEYWORDS: Diffraction gratings, Diffraction, Spectroscopy, Optical design, Holography, Absorbance, Volume holography, Spectral resolution, Imaging systems, Optical filters

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Proceedings Article | 31 December 2013 Paper

Development of spectrophotometer for breast tumor diagnostic spectrometer based on virtual instruments

Zhong Ren, Guodong Liu, Ying Liu, Zhen Huang

Proceedings Volume 9042, 90420P (2013) https://doi.org/10.1117/12.2034269

KEYWORDS: Breast, Tumors, Spectrophotometry, Sensors, Diagnostics, Spectroscopy, Data acquisition, Holography, Lamps, Photodiodes

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Proceedings Article | 19 September 2013 Paper

Exploration of noninvasive determination of blood glucose concentration by using photoacoustic technique

Zhong Ren, Guodong Liu, Ying Liu, Zhen Huang

Proceedings Volume 8905, 890510 (2013) https://doi.org/10.1117/12.2033271

KEYWORDS: Glucose, Blood, Signal detection, Optical parametric oscillators, Photoacoustic spectroscopy, Pulsed laser operation, Light scattering, Near infrared, Acoustics, Scattering

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Proceedings Article | 11 September 2013 Paper

Study on an improved filtered back-projection image reconstruction algorithm combined with wavelet denoising

Zhong Ren, Guodong Liu, Zhen Huang

Proceedings Volume 8907, 890710 (2013) https://doi.org/10.1117/12.2031888

KEYWORDS: Wavelets, Reconstruction algorithms, Denoising, Image filtering, Image restoration, Medical imaging, Stereolithography, Computed tomography, Image processing, Filtering (signal processing)

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Proceedings Article | 11 December 2012 Paper

Photoacoustic measurement for glucose solution concentration based on tunable pulsed laser induced ultrasound

Zhong Ren, Guodong Liu, Zhen Huang, Dengji Zhao

Proceedings Volume 8553, 85532J (2012) https://doi.org/10.1117/12.981650

KEYWORDS: Glucose, Pulsed laser operation, Signal detection, Transducers, Blood, Ultrasonics, Optical parametric oscillators, Tunable lasers, Photoacoustic spectroscopy, Ultrasonography

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Proceedings Article | 30 November 2012 Paper

Imaging reconstruction based on improved wavelet denoising combined with parallel-beam filtered back-projection algorithm

Zhong Ren, Guodong Liu, Zhen Huang

Proceedings Volume 8558, 85581C (2012) https://doi.org/10.1117/12.981653

KEYWORDS: Reconstruction algorithms, Digital filtering, Image filtering, Wavelets, Denoising, Image restoration, Stereolithography, Image quality, Medical imaging, Electronic filtering

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Proceedings Article | 16 October 2012 Paper

Research on a two ball lens system POF connector

Zhen Huang, Guodong Liu, Zhong Ren, Lvming Zeng, Qixin Wan

Proceedings Volume 8416, 841614 (2012) https://doi.org/10.1117/12.975141

KEYWORDS: Connectors, Phase only filters, Optical fibers, Ray tracing, Refractive index, Tolerancing, Reflection, Telecommunications, Analytical research, Polymer optical fibers

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Proceedings Article | 14 March 2012 Open Access

Design of a novel pulsed laser diode induced photoacoustic imaging system for tumor diagnosis (Withdrawal Notice)

Zhong Ren, Lvming Zeng, Guodong Liu, Zhen Huang

Proceedings Volume 8329, 832905 (2012) https://doi.org/10.1117/12.925857

KEYWORDS: Photoacoustic spectroscopy, Semiconductor lasers, Signal detection, Photoacoustic imaging, Tumors, Imaging systems, Tissue optics, Ultrasonics, Transducers, Ultrasonography

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Proceedings Article | 14 March 2012 Paper

2D photoacoustic scanning imaging with a single pulsed laser diode excitation

Xuegang Chen, Changwei Li, Lvming Zeng, Guodong Liu, Zhen Huang, Zhong Ren

Proceedings Volume 8329, 832909 (2012) https://doi.org/10.1117/12.918741

KEYWORDS: Photoacoustic spectroscopy, Semiconductor lasers, Signal to noise ratio, Imaging systems, Photoacoustic imaging, Blood vessels, Transducers, Signal detection, Integrated optics, Ferroelectric materials

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Proceedings Article | 17 February 2012 Paper

Design of a novel spectrophotometer for water quality monitor based on holography concave grating and CCD

Zhong Ren, Guodong Liu, Lvming Zeng, Zhen Huang

Proceedings Volume 8332, 83320N (2012) https://doi.org/10.1117/12.917882

KEYWORDS: Scanning probe microscopy, Charge-coupled devices, Data acquisition, Spectrophotometry, Lamps, Collimation, Holography, Optical design, LabVIEW, Signal detection

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Proceedings Article | 23 August 2011 Paper

Design of a novel multi-spectral imaging spectrometer for breast cancer detector based on VHT grating

Zhong Ren, Yan Wu, Guodong Liu, Zhen Huang, Lvming Zeng

Proceedings Volume 8192, 81924Q (2011) https://doi.org/10.1117/12.895083

KEYWORDS: Diffraction gratings, Charge-coupled devices, Multispectral imaging, Breast cancer, Spectroscopy, Lamps, Collimation, Breast, Tumors, Imaging spectroscopy

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Proceedings Article | 20 August 2011 Paper

Design of a novel laser-induced fluorescence spectrophotometer for water quality monitor based on virtual instrument and linear CCD

Zhong Ren, Shuanggen Huang, Guodong Liu, Zhen Huang, Lvming Zeng

Proceedings Volume 8192, 81920A (2011) https://doi.org/10.1117/12.895428

KEYWORDS: Spectrophotometry, Charge-coupled devices, Laser induced fluorescence, Luminescence, Data acquisition, Diffraction gratings, Collimation, Water, Q switched lasers, Glasses

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Proceedings Article | 9 November 2010 Paper

Development of a novel spectrometer for tongue coating analyzer based on volume holography transmissive grating

Zhong Ren, Guodong Liu, Longmin Dai, Zhen Huang, Lvming Zeng

Proceedings Volume 7845, 78451X (2010) https://doi.org/10.1117/12.868440

KEYWORDS: Spectroscopy, Diffraction gratings, Charge-coupled devices, Tongue, Lamps, Signal processing, Coating, Light sources, Diffraction, Digital filtering

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Proceedings Article | 22 October 2010 Paper

Development of the tongue coating analyzer based on concave grating monochrometer and virtual instrument

Zhong Ren, Guodong Liu, Lvming Zeng, Zhen Huang, Wenping Zeng

Proceedings Volume 7658, 765830 (2010) https://doi.org/10.1117/12.865532

KEYWORDS: Tongue, Coating, Charge-coupled devices, Data acquisition, Image processing, Signal processing, Light sources, Computing systems, Spectrum analysis, Lamps

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Proceedings Article | 29 August 2009 Paper

Laser-induced photoacoustic glucose spectrum denoising using an improved wavelet threshold translation-invariant algorithm

Zhong Ren, Guodong Liu, Zhen Huang, Wenping Zeng, Dongmei Li

Proceedings Volume 7382, 73822R (2009) https://doi.org/10.1117/12.835004

KEYWORDS: Wavelets, Signal to noise ratio, Glucose, Denoising, Blood, Photoacoustic spectroscopy, Tissues, Interference (communication), Signal detection, Ultrasonics

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Proceedings Article | 19 March 2009 Paper

A method of 3D data information encryption with virtual holography

Zhen Huang, Guodong Liu, Zhong Ren, Lüming Zeng

Proceedings Volume 7125, 71250E (2009) https://doi.org/10.1117/12.822146

KEYWORDS: Holograms, Holography, Digital holography, 3D image reconstruction, Computer simulations, Digital imaging, Reconstruction algorithms, Computer security, Information security, Data storage

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Proceedings Article | 19 March 2009 Paper

A method of 3-D data information storage with virtual holography

Zhen Huang, Guodong Liu, Zhong Ren, Lüming Zeng

Proceedings Volume 7125, 71250A (2009) https://doi.org/10.1117/12.829355

KEYWORDS: Data storage, Holograms, Holography, 3D image reconstruction, 3D optical data storage, 3D image processing, Holographic data storage systems, Spatial light modulators, Digital holography, Charge-coupled devices

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Proceedings Article | 6 March 2009 Paper

Research on biochemical spectrum denoising based on a novel wavelet threshold function and an improved translation-invariance method

Zhong Ren, Guodong Liu, Lvming Zeng, Zhen Huang, Shuanggen Huang

Proceedings Volume 7280, 72801Q (2009) https://doi.org/10.1117/12.821088

KEYWORDS: Wavelets, Denoising, Signal to noise ratio, Linear filtering, Digital filtering, Charge-coupled devices, Interference (communication), Optical filters, Light, Reconstruction algorithms

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