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Xia Y, Liu W, Meng J, Hu J, Liu W, Kang J, Luo B, Zhang H, Tang W. Principles, developments, and applications of spatially resolved spectroscopy in agriculture: a review. Front Plant Sci 2024; 14:1324881. [PMID: 38269139 PMCID: PMC10805836 DOI: 10.3389/fpls.2023.1324881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 12/19/2023] [Indexed: 01/26/2024]
Abstract
Agriculture is the primary source of human survival, which provides the most basic living and survival conditions for human beings. As living standards continue to improve, people are also paying more attention to the quality and safety of agricultural products. Therefore, the detection of agricultural product quality is very necessary. In the past decades, the spectroscopy technique has been widely used because of its excellent results in agricultural quality detection. However, traditional spectral inspection methods cannot accurately describe the internal information of agricultural products. With the continuous research and development of optical properties, it has been found that the internal quality of an object can be better reflected by separating the properties of light, such as its absorption and scattering properties. In recent years, spatially resolved spectroscopy has been increasingly used in the field of agricultural product inspection due to its simple compositional structure, low-value cost, ease of operation, efficient detection speed, and outstanding ability to obtain information about agricultural products at different depths. It can also separate optical properties based on the transmission equation of optics, which allows for more accurate detection of the internal quality of agricultural products. This review focuses on the principles of spatially resolved spectroscopy, detection equipment, analytical methods, and specific applications in agricultural quality detection. Additionally, the optical properties methods and direct analysis methods of spatially resolved spectroscopy analysis methods are also reported in this paper.
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Affiliation(s)
- Yu Xia
- School of Electrical and Control Engineering, Shaanxi University of Science & Technology, Xi’an, Shaanxi, China
| | - Wenxi Liu
- School of Electrical and Control Engineering, Shaanxi University of Science & Technology, Xi’an, Shaanxi, China
- Intelligent Equipment Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Jingwu Meng
- School of Electrical and Control Engineering, Shaanxi University of Science & Technology, Xi’an, Shaanxi, China
| | - Jinghao Hu
- School of Electrical and Control Engineering, Shaanxi University of Science & Technology, Xi’an, Shaanxi, China
| | - Wenbo Liu
- School of Electrical and Control Engineering, Shaanxi University of Science & Technology, Xi’an, Shaanxi, China
| | - Jie Kang
- School of Electrical and Control Engineering, Shaanxi University of Science & Technology, Xi’an, Shaanxi, China
| | - Bin Luo
- Intelligent Equipment Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Han Zhang
- Intelligent Equipment Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Wei Tang
- School of Electrical and Control Engineering, Shaanxi University of Science & Technology, Xi’an, Shaanxi, China
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Kafian-Attari I, Nippolainen E, Bergmann F, Mirhashemi A, Paakkari P, Foschum F, Kienle A, Töyräs J, Afara IO. Impact of experimental setup parameters on the measurement of articular cartilage optical properties in the visible and short near-infrared spectral bands. Biomed Opt Express 2023; 14:3397-3412. [PMID: 37497494 PMCID: PMC10368039 DOI: 10.1364/boe.488801] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 05/08/2023] [Accepted: 05/13/2023] [Indexed: 07/28/2023]
Abstract
There is increasing research on the potential application of diffuse optical spectroscopy and hyperspectral imaging for characterizing the health of the connective tissues, such as articular cartilage, during joint surgery. These optical techniques facilitate the rapid and objective diagnostic assessment of the tissue, thus providing unprecedented information toward optimal treatment strategy. Adaption of optical techniques for diagnostic assessment of musculoskeletal disorders, including osteoarthritis, requires precise determination of the optical properties of connective tissues such as articular cartilage. As every indirect method of tissue optical properties estimation consists of a measurement step followed by a computational analysis step, there are parameters associated with these steps that could influence the estimated values of the optical properties. In this study, we report the absorption and reduced scattering coefficients of articular cartilage in the spectral band of 400-1400 nm. We assess the impact of the experimental setup parameters, including surrounding medium, sample volume, and scattering anisotropy factor on the reported optical properties. Our results suggest that the absorption coefficient of articular cartilage is sensitive to the variation in the surrounding medium, whereas its reduced scattering coefficient is invariant to the experimental setup parameters.
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Affiliation(s)
- Iman Kafian-Attari
- Department of Technical Physics, University of Eastern Finland, Finland
- Diagnostic Imaging Center, Kuopio University Hospital, Finland
| | - Ervin Nippolainen
- Department of Technical Physics, University of Eastern Finland, Finland
| | - Florian Bergmann
- Institute for Laser Technologies in Medicine and Meteorology, University of Ulm, Germany
| | - Arash Mirhashemi
- Department of Technical Physics, University of Eastern Finland, Finland
| | - Petri Paakkari
- Department of Technical Physics, University of Eastern Finland, Finland
- Diagnostic Imaging Center, Kuopio University Hospital, Finland
| | - Florian Foschum
- Institute for Laser Technologies in Medicine and Meteorology, University of Ulm, Germany
| | - Alwin Kienle
- Institute for Laser Technologies in Medicine and Meteorology, University of Ulm, Germany
| | - Juha Töyräs
- Department of Technical Physics, University of Eastern Finland, Finland
- Science Service Center, Kuopio University Hospital, Finland
- School of Information Technology and Electrical Engineering, University of Queensland, Australia
| | - Isaac O. Afara
- Department of Technical Physics, University of Eastern Finland, Finland
- School of Information Technology and Electrical Engineering, University of Queensland, Australia
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Sassaroli A, Tommasi F, Cavalieri S, Martelli F. Fluence rate directly derived from photon pathlengths: a tool for Monte Carlo simulations in biomedical optics. Biomed Opt Express 2023; 14:148-162. [PMID: 36698672 PMCID: PMC9842009 DOI: 10.1364/boe.477339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 11/25/2022] [Accepted: 11/28/2022] [Indexed: 06/17/2023]
Abstract
In biomedical optics, the mean fluence rate of photons, assessed in a sub-volume of a propagating medium, is classically obtained in Monte Carlo simulations by taking into account the power deposited by the absorbed photons in the sub-volume. In the present contribution, we propose and analytically demonstrate an alternative method based on the assessment of the mean pathlength traveled by all the photons inside the sub-volume. Few practical examples of its applications are given. This method has the advantage of improving, in many cases, the statistics and the convergence of the Monte Carlo simulations. Further, it also works when the absorption coefficient is nil and for a non-constant spatial distribution of the absorption coefficient inside the sub-volume. The proposed approach is a re-visitation of a well-known method applied in radiation and nuclear physics in the context of radiative transfer, where it can be derived in a more natural manner.
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Affiliation(s)
- Angelo Sassaroli
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA
| | - Federico Tommasi
- Dipartimento di Fisica e Astronomia dell’Università degli Studi di Firenze, via Giovanni Sansone 1, 50019 Sesto Fiorentino, Italy
| | - Stefano Cavalieri
- Dipartimento di Fisica e Astronomia dell’Università degli Studi di Firenze, via Giovanni Sansone 1, 50019 Sesto Fiorentino, Italy
| | - Fabrizio Martelli
- Dipartimento di Fisica e Astronomia dell’Università degli Studi di Firenze, via Giovanni Sansone 1, 50019 Sesto Fiorentino, Italy
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Fang Q, Martelli F, Lilge L. Special Section Guest Editorial: Introduction to the Special Section Celebrating 30 years of Open Source Monte Carlo Codes in Biomedical Optics. J Biomed Opt 2022; 27:083001. [PMID: 35941724 PMCID: PMC9360607 DOI: 10.1117/1.jbo.27.8.083001] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The editorial introduces the JBO Special Section Celebrating 30 Years of Open Source Monte Carlo Codes in Biomedical Optics for Volume 27, Issue 8.
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Affiliation(s)
- Qianqian Fang
- Northeastern University, Boston, Massachusetts, United States, United States
| | | | - Lothar Lilge
- University of Toronto, Toronto, Ontario, Canada, Canada
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