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Zhao J, Lui H, Kalia S, Lee TK, Zeng H. Improving skin cancer detection by Raman spectroscopy using convolutional neural networks and data augmentation. Front Oncol 2024; 14:1320220. [PMID: 38962264 PMCID: PMC11219827 DOI: 10.3389/fonc.2024.1320220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Accepted: 05/23/2024] [Indexed: 07/05/2024] Open
Abstract
Background Our previous studies have demonstrated that Raman spectroscopy could be used for skin cancer detection with good sensitivity and specificity. The objective of this study is to determine if skin cancer detection can be further improved by combining deep neural networks and Raman spectroscopy. Patients and methods Raman spectra of 731 skin lesions were included in this study, containing 340 cancerous and precancerous lesions (melanoma, basal cell carcinoma, squamous cell carcinoma and actinic keratosis) and 391 benign lesions (melanocytic nevus and seborrheic keratosis). One-dimensional convolutional neural networks (1D-CNN) were developed for Raman spectral classification. The stratified samples were divided randomly into training (70%), validation (10%) and test set (20%), and were repeated 56 times using parallel computing. Different data augmentation strategies were implemented for the training dataset, including added random noise, spectral shift, spectral combination and artificially synthesized Raman spectra using one-dimensional generative adversarial networks (1D-GAN). The area under the receiver operating characteristic curve (ROC AUC) was used as a measure of the diagnostic performance. Conventional machine learning approaches, including partial least squares for discriminant analysis (PLS-DA), principal component and linear discriminant analysis (PC-LDA), support vector machine (SVM), and logistic regression (LR) were evaluated for comparison with the same data splitting scheme as the 1D-CNN. Results The ROC AUC of the test dataset based on the original training spectra were 0.886±0.022 (1D-CNN), 0.870±0.028 (PLS-DA), 0.875±0.033 (PC-LDA), 0.864±0.027 (SVM), and 0.525±0.045 (LR), which were improved to 0.909±0.021 (1D-CNN), 0.899±0.022 (PLS-DA), 0.895±0.022 (PC-LDA), 0.901±0.020 (SVM), and 0.897±0.021 (LR) respectively after augmentation of the training dataset (p<0.0001, Wilcoxon test). Paired analyses of 1D-CNN with conventional machine learning approaches showed that 1D-CNN had a 1-3% improvement (p<0.001, Wilcoxon test). Conclusions Data augmentation not only improved the performance of both deep neural networks and conventional machine learning techniques by 2-4%, but also improved the performance of the models on spectra with higher noise or spectral shifting. Convolutional neural networks slightly outperformed conventional machine learning approaches for skin cancer detection by Raman spectroscopy.
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Affiliation(s)
- Jianhua Zhao
- Photomedicine Institute, Department of Dermatology and Skin Science, University of British Columbia and Vancouver Coastal Health Research Institute, Vancouver, BC, Canada
- BC Cancer Research Institute, University of British Columbia, Vancouver, BC, Canada
| | - Harvey Lui
- Photomedicine Institute, Department of Dermatology and Skin Science, University of British Columbia and Vancouver Coastal Health Research Institute, Vancouver, BC, Canada
- BC Cancer Research Institute, University of British Columbia, Vancouver, BC, Canada
| | - Sunil Kalia
- Photomedicine Institute, Department of Dermatology and Skin Science, University of British Columbia and Vancouver Coastal Health Research Institute, Vancouver, BC, Canada
- BC Children’s Hospital Research Institute, Vancouver, BC, Canada
- Centre for Clinical Epidemiology and Evaluation, Vancouver Coastal Health Research Institute, Vancouver, BC, Canada
| | - Tim K. Lee
- Photomedicine Institute, Department of Dermatology and Skin Science, University of British Columbia and Vancouver Coastal Health Research Institute, Vancouver, BC, Canada
- BC Cancer Research Institute, University of British Columbia, Vancouver, BC, Canada
| | - Haishan Zeng
- Photomedicine Institute, Department of Dermatology and Skin Science, University of British Columbia and Vancouver Coastal Health Research Institute, Vancouver, BC, Canada
- BC Cancer Research Institute, University of British Columbia, Vancouver, BC, Canada
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Fitzgerald S, Akhtar J, Schartner E, Ebendorff-Heidepriem H, Mahadevan-Jansen A, Li J. Multimodal Raman spectroscopy and optical coherence tomography for biomedical analysis. JOURNAL OF BIOPHOTONICS 2023; 16:e202200231. [PMID: 36308009 PMCID: PMC10082563 DOI: 10.1002/jbio.202200231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 10/19/2022] [Accepted: 10/26/2022] [Indexed: 06/16/2023]
Abstract
Optical techniques hold great potential to detect and monitor disease states as they are a fast, non-invasive toolkit. Raman spectroscopy (RS) in particular is a powerful label-free method capable of quantifying the biomolecular content of tissues. Still, spontaneous Raman scattering lacks information about tissue morphology due to its inability to rapidly assess a large field of view. Optical Coherence Tomography (OCT) is an interferometric optical method capable of fast, depth-resolved imaging of tissue morphology, but lacks detailed molecular contrast. In many cases, pairing label-free techniques into multimodal systems allows for a more diverse field of applications. Integrating RS and OCT into a single instrument allows for both structural imaging and biochemical interrogation of tissues and therefore offers a more comprehensive means for clinical diagnosis. This review summarizes the efforts made to date toward combining spontaneous RS-OCT instrumentation for biomedical analysis, including insights into primary design considerations and data interpretation.
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Affiliation(s)
- Sean Fitzgerald
- Vanderbilt Biophotonics Center, Nashville, Tennessee, USA
- Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee, USA
| | - Jobaida Akhtar
- School of Physical Sciences, The University of Adelaide, Adelaide, South Australia, Australia
- Institute for Photonics and Advanced Sensing, The University of Adelaide, Adelaide, South Australia, Australia
- Australian Research Council Centre of Excellence for Nanoscale BioPhotonics, Adelaide, South Australia, Australia
| | - Erik Schartner
- School of Physical Sciences, The University of Adelaide, Adelaide, South Australia, Australia
- Institute for Photonics and Advanced Sensing, The University of Adelaide, Adelaide, South Australia, Australia
- Australian Research Council Centre of Excellence for Nanoscale BioPhotonics, Adelaide, South Australia, Australia
| | - Heike Ebendorff-Heidepriem
- School of Physical Sciences, The University of Adelaide, Adelaide, South Australia, Australia
- Institute for Photonics and Advanced Sensing, The University of Adelaide, Adelaide, South Australia, Australia
- Australian Research Council Centre of Excellence for Nanoscale BioPhotonics, Adelaide, South Australia, Australia
| | - Anita Mahadevan-Jansen
- Vanderbilt Biophotonics Center, Nashville, Tennessee, USA
- Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee, USA
| | - Jiawen Li
- Institute for Photonics and Advanced Sensing, The University of Adelaide, Adelaide, South Australia, Australia
- Australian Research Council Centre of Excellence for Nanoscale BioPhotonics, Adelaide, South Australia, Australia
- School of Electrical and Electronic Engineering, The University of Adelaide, Adelaide, South Australia, Australia
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Bratchenko IA, Bratchenko LA, Khristoforova YA, Moryatov AA, Kozlov SV, Zakharov VP. Classification of skin cancer using convolutional neural networks analysis of Raman spectra. COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE 2022; 219:106755. [PMID: 35349907 DOI: 10.1016/j.cmpb.2022.106755] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 01/21/2022] [Accepted: 03/11/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND AND OBJECTIVE Skin cancer is the most common malignancy in whites accounting for about one third of all cancers diagnosed per year. Portable Raman spectroscopy setups for skin cancer "optical biopsy" are utilized to detect tumors based on their spectral features caused by the comparative presence of different chemical components. However, low signal-to-noise ratio in such systems may prevent accurate tumors classification. Thus, there is a challenge to develop methods for efficient skin tumors classification. METHODS We compare the performance of convolutional neural networks and the projection on latent structures with discriminant analysis for discriminating skin cancer using the analysis of Raman spectra with a high autofluorescence background stimulated by a 785 nm laser. We have registered the spectra of 617 cases of skin neoplasms (615 patients, 70 melanomas, 122 basal cell carcinomas, 12 squamous cell carcinomas and 413 benign tumors) in vivo with a portable Raman setup and created classification models both for convolutional neural networks and projection on latent structures approaches. To check the classification models stability, a 10-fold cross-validation was performed for all created models. To avoid models overfitting, the data was divided into a training set (80% of spectral dataset) and a test set (20% of spectral dataset). RESULTS The results for different classification tasks demonstrate that the convolutional neural networks significantly (p<0.01) outperforms the projection on latent structures. For the convolutional neural networks implementation we obtained ROC AUCs of 0.96 (0.94 - 0.97; 95% CI), 0.90 (0.85-0.94; 95% CI), and 0.92 (0.87 - 0.97; 95% CI) for classifying a) malignant vs benign tumors, b) melanomas vs pigmented tumors and c) melanomas vs seborrheic keratosis respectively. CONCLUSIONS The performance of the convolutional neural networks classification of skin tumors based on Raman spectra analysis is higher or comparable to the accuracy provided by trained dermatologists. The increased accuracy with the convolutional neural networks implementation is due to a more precise accounting of low intensity Raman bands in the intense autofluorescence background. The achieved high performance of skin tumors classifications with convolutional neural networks analysis opens a possibility for wide implementation of Raman setups in clinical setting.
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Affiliation(s)
- Ivan A Bratchenko
- Department of Laser and Biotechnical Systems, Samara University, 34 Moskovskoe Shosse, Samara, 443086, Russian Federation.
| | - Lyudmila A Bratchenko
- Department of Laser and Biotechnical Systems, Samara University, 34 Moskovskoe Shosse, Samara, 443086, Russian Federation
| | - Yulia A Khristoforova
- Department of Laser and Biotechnical Systems, Samara University, 34 Moskovskoe Shosse, Samara, 443086, Russian Federation
| | - Alexander A Moryatov
- Department of Oncology, Samara State Medical University, 159 Tashkentskaya Street, Samara, 443095, Russian Federation; Department of Visual Localization Tumors, Samara Regional Clinical Oncology Dispensary, 50 Solnechnaya Street, Samara, 443095, Russian Federation
| | - Sergey V Kozlov
- Department of Oncology, Samara State Medical University, 159 Tashkentskaya Street, Samara, 443095, Russian Federation; Department of Visual Localization Tumors, Samara Regional Clinical Oncology Dispensary, 50 Solnechnaya Street, Samara, 443095, Russian Federation
| | - Valery P Zakharov
- Department of Laser and Biotechnical Systems, Samara University, 34 Moskovskoe Shosse, Samara, 443086, Russian Federation
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Khlebtsov B, Burov A, Pylaev T, Savkina A, Prikhozhdenko E, Bratashov D, Khlebtsov N. Improving SERS bioimaging of subcutaneous phantom in vivo with optical clearing. JOURNAL OF BIOPHOTONICS 2022; 15:e202100281. [PMID: 34856066 DOI: 10.1002/jbio.202100281] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 10/29/2021] [Accepted: 11/25/2021] [Indexed: 06/13/2023]
Abstract
Surface-enhanced Raman scattering (SERS) has proven to be a promising technique for different types of imaging including preoperative and intraoperative in vivo tumor visualization. However, the strong scattering of the turbid tissue limits its use in subcutaneous areas. In this article, we used an optical clearing technique to improve the SERS signal from a subcutaneous tumor phantom. The phantom is a 2 mm sphere of calcium alginate with incorporated petal-like gap-enhanced Raman tags. The use of optical clearing increases the SERS signal target-to-background ratio for 5 times and allow to decrease the total imaging time for at least 10 times. In addition, SERS imaging assisted with optical clearing made it possible to more precisely determine the shape and boundaries of the implanted phantom. The combination of optical clearing and SERS is a promising strategy for the clinical imaging of subcutaneous objects that are usually shielded by dermal tissue.
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Affiliation(s)
- Boris Khlebtsov
- Institute of Biochemistry and Physiology of Plants and Microorganisms RAS, Saratov, Russia
| | - Andrey Burov
- Institute of Biochemistry and Physiology of Plants and Microorganisms RAS, Saratov, Russia
| | - Timofey Pylaev
- Institute of Biochemistry and Physiology of Plants and Microorganisms RAS, Saratov, Russia
- Saratov State Medical University, Saratov, Russia
| | | | | | | | - Nikolai Khlebtsov
- Institute of Biochemistry and Physiology of Plants and Microorganisms RAS, Saratov, Russia
- Saratov State University, Saratov, Russia
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Bratchenko IA, Bratchenko LA. Comment on “Finding reduced Raman spectroscopy fingerprint of skin samples for melanoma diagnosis through machine learning”. Artif Intell Med 2022; 125:102252. [DOI: 10.1016/j.artmed.2022.102252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 01/29/2022] [Indexed: 11/30/2022]
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Huang X, Song D, Li J, Qin J, Wang D, Li J, Wang H, Wang S. Validating Multivariate Classification Algorithms in Raman Spectroscopy-Based Osteosarcoma Cellular Analysis. ANAL LETT 2021. [DOI: 10.1080/00032719.2021.1982959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Xiaojun Huang
- State Key Laboratory of Photon-Technology in Western China Energy, Institute of Photonics and Photon-Technology, Northwest University, Xi’an, Shaanxi, China
| | - Dongliang Song
- State Key Laboratory of Photon-Technology in Western China Energy, Institute of Photonics and Photon-Technology, Northwest University, Xi’an, Shaanxi, China
| | - Jie Li
- State Key Laboratory of Photon-Technology in Western China Energy, Institute of Photonics and Photon-Technology, Northwest University, Xi’an, Shaanxi, China
| | - Jie Qin
- Department of Orthopedics, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Difan Wang
- School of Life, Xidian University, Xi'an, Shaanxi, China
| | - Jing Li
- Department of Orthopedics, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Haifeng Wang
- State Key Laboratory of Photon-Technology in Western China Energy, Institute of Photonics and Photon-Technology, Northwest University, Xi’an, Shaanxi, China
| | - Shuang Wang
- State Key Laboratory of Photon-Technology in Western China Energy, Institute of Photonics and Photon-Technology, Northwest University, Xi’an, Shaanxi, China
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Jung JM, Cho JY, Lee WJ, Chang SE, Lee MW, Won CH. Emerging Minimally Invasive Technologies for the Detection of Skin Cancer. J Pers Med 2021; 11:951. [PMID: 34683091 PMCID: PMC8538732 DOI: 10.3390/jpm11100951] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 09/23/2021] [Accepted: 09/23/2021] [Indexed: 12/23/2022] Open
Abstract
With the increasing incidence of skin cancer, many noninvasive technologies to detect its presence have been developed. This review focuses on reflectance confocal microscopy (RCM), optical coherence tomography (OCT), high-frequency ultrasound (HFUS), electrical impedance spectroscopy (EIS), pigmented lesion assay (PLA), and Raman spectroscopy (RS) and discusses the basic principle, clinical applications, advantages, and disadvantages of each technology. RCM provides high cellular resolution and has high sensitivity and specificity for the diagnosis of skin cancer. OCT provides lower resolution than RCM, although its evaluable depth is deeper than that of RCM. RCM and OCT may be useful in reducing the number of unnecessary biopsies, evaluating the tumor margin, and monitoring treatment response. HFUS can be mainly used to delineate tumor depths or margins and monitor the treatment response. EIS provides high sensitivity but low specificity for the diagnosis of skin malignancies. PLA, which is based on the genetic information of lesions, is applicable for the detection of melanoma with high sensitivity and moderate-to-high specificity. RS showed high accuracy for the diagnosis of skin cancer, although more clinical studies are required. Advances in these technologies for the diagnosis of skin cancer can lead to the realization of optimized and individualized treatments.
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Affiliation(s)
- Joon Min Jung
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea; (J.M.J.); (W.J.L.); (S.E.C.); (M.W.L.)
| | - Ji Young Cho
- Department of Medical Science, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Korea;
| | - Woo Jin Lee
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea; (J.M.J.); (W.J.L.); (S.E.C.); (M.W.L.)
| | - Sung Eun Chang
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea; (J.M.J.); (W.J.L.); (S.E.C.); (M.W.L.)
| | - Mi Woo Lee
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea; (J.M.J.); (W.J.L.); (S.E.C.); (M.W.L.)
| | - Chong Hyun Won
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea; (J.M.J.); (W.J.L.); (S.E.C.); (M.W.L.)
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Li X, Chen H, Zhang S, Yang H, Gao S, Xu H, Wang L, Xu R, Zhou F, Hu J, Zhao J, Zeng H. Blood plasma resonance Raman spectroscopy combined with multivariate analysis for esophageal cancer detection. JOURNAL OF BIOPHOTONICS 2021; 14:e202100010. [PMID: 34092038 DOI: 10.1002/jbio.202100010] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 04/28/2021] [Accepted: 06/02/2021] [Indexed: 06/12/2023]
Abstract
We herein report a novel, reliable and inexpensive method for detecting esophageal cancer using blood plasma resonance Raman spectroscopy combined with multivariate analysis methods. The blood plasma samples were divided into late stage cancer group (n = 164), early stage cancer group (n = 35) and normal group (n = 135) based on clinical pathological diagnosis. Using a specially designed quartz capillary tube as sample holder, we obtained higher quality resonance Raman spectra of blood plasma than existing method. The study demonstrated that the carotenoids levels in blood plasma were reduced in esophageal cancer patients. The area under the receiver operating characteristic curve (and 95% confidence interval) calculated by wavenumber selection and principal component analysis combined with linear discriminant analysis (PC-LDA) algorithm were 0.894 (0.858-0.929), 0.901 (0.841-0.960) and 0.871 (0.799-0.942) for differentiating late cancer from normal, late cancer from early cancer, and early cancer from normal respectively. The contribution from the two carotenoids wavenumber regions of 1155 and 1515 cm-1 were more than 84.2%. The results show that the plasma carotenoids could be a potential biomarker for screening esophageal cancer using resonance Raman spectroscopy combined with wavenumber selection and PC-LDA algorithms.
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Affiliation(s)
- Xianchang Li
- Anyang Tumor Hospital, The 4th Affiliated Hospital of Henan University of Science and Technology, Anyang, China
- State Key Laboratory of Esophageal Cancer Prevention and Treatment and Henan Key Laboratory for Esophageal Cancer Research of The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Henan Joint International Research Laboratory of Nanocomposite Sensing Materials, School of Chemical and Environmental Engineering, Anyang Institute of Technology, Anyang, China
| | - Hongjun Chen
- Anyang Tumor Hospital, The 4th Affiliated Hospital of Henan University of Science and Technology, Anyang, China
| | - Shiding Zhang
- Henan Joint International Research Laboratory of Nanocomposite Sensing Materials, School of Chemical and Environmental Engineering, Anyang Institute of Technology, Anyang, China
| | - Haijun Yang
- Anyang Tumor Hospital, The 4th Affiliated Hospital of Henan University of Science and Technology, Anyang, China
| | - Shanshan Gao
- Henan Joint International Research Laboratory of Nanocomposite Sensing Materials, School of Chemical and Environmental Engineering, Anyang Institute of Technology, Anyang, China
| | - Haisheng Xu
- Anyang Tumor Hospital, The 4th Affiliated Hospital of Henan University of Science and Technology, Anyang, China
| | - Lidong Wang
- State Key Laboratory of Esophageal Cancer Prevention and Treatment and Henan Key Laboratory for Esophageal Cancer Research of The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Ruiping Xu
- Anyang Tumor Hospital, The 4th Affiliated Hospital of Henan University of Science and Technology, Anyang, China
| | - Fuyou Zhou
- Anyang Tumor Hospital, The 4th Affiliated Hospital of Henan University of Science and Technology, Anyang, China
| | - Jiming Hu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, China
| | - Jianhua Zhao
- Department of Dermatology and Skin Science, University of British Columbia, Vancouver, British Columbia, Canada
- Imaging Unit - Department of Integrative Oncology, BC Cancer Research Centre, Vancouver, British Columbia, Canada
| | - Haishan Zeng
- Department of Dermatology and Skin Science, University of British Columbia, Vancouver, British Columbia, Canada
- Imaging Unit - Department of Integrative Oncology, BC Cancer Research Centre, Vancouver, British Columbia, Canada
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Alsamad F, Brunel B, Vuiblet V, Gillery P, Jaisson S, Piot O. In depth investigation of collagen non-enzymatic glycation by Raman spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 251:119382. [PMID: 33461140 DOI: 10.1016/j.saa.2020.119382] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 12/19/2020] [Accepted: 12/21/2020] [Indexed: 06/12/2023]
Abstract
Non-enzymatic glycation is a post-translational modification of long-lived matrix proteins such as type I collagen. It occurs during aging and leads to the formation of advanced glycation end-products (AGEs). AGE accumulation is associated with severe complications in chronic and age-related diseases. The assessment of modifications induced by this (patho)physiological process represents an interest in biology and medicine for a better patient care. The objective of our work was to position the interest of Raman spectroscopy in the quantification of collagen glycation. Two types of in vitro glycation were used by incubating collagen samples, at different durations, with ribose or glyoxylic acid; these reducing agents acting on the chemical specificity of the glycation reaction. Glycation efficiency was evaluated by the liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS) quantification of carboxymethyllysine (CML) and pentosidine, which are among the most studied AGEs. Raman data were processed by PCA coupled to validity indices and Lasso regression as multivariate analysis tools. Regression models were constructed by considering the LC-MS/MS results as reference values. A marked variability was observed within the Raman datasets making difficult the identification of spectral differences between control and ribose-treated collagen samples. By taking advantage of the chemical specificity of the glyoxylic acid treatment leading to CML formation, on one hand, and the feature selection included in the Lasso algorithm, on the other hand, Raman markers associated with glycation were identified. The assigned vibrations corresponded to modifications of side chains of collagen. In addition, a threshold of CML concentration was determined as quantitative indicator of the applicability of Raman spectroscopy for potential patient follow-up purposes. Although lacking in sensitivity to directly detect AGEs in collagen, Raman spectroscopy allows to highlight the molecular modifications of collagen induced by glycation.
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Affiliation(s)
- Fatima Alsamad
- University of Reims Champagne-Ardenne, BioSpecT, EA n°7506, Faculty of Pharmacy, SFR Santé, Reims, France.
| | - Benjamin Brunel
- University of Reims Champagne-Ardenne, BioSpecT, EA n°7506, Faculty of Pharmacy, SFR Santé, Reims, France.
| | - Vincent Vuiblet
- University of Reims Champagne-Ardenne, BioSpecT, EA n°7506, Faculty of Pharmacy, SFR Santé, Reims, France.
| | - Philippe Gillery
- University of Reims Champagne-Ardenne, MEDyC Unit CNRS UMR n°7369, Faculty of Medicine, SFR Santé, Reims, France; University Hospital of Reims, Biochemistry Department, Reims, France.
| | - Stephane Jaisson
- University of Reims Champagne-Ardenne, MEDyC Unit CNRS UMR n°7369, Faculty of Medicine, SFR Santé, Reims, France; University Hospital of Reims, Biochemistry Department, Reims, France.
| | - Olivier Piot
- University of Reims Champagne-Ardenne, BioSpecT, EA n°7506, Faculty of Pharmacy, SFR Santé, Reims, France; University of Reims Champagne-Ardenne, PICT (Cellular and Tissular Imaging Platform), Reims, France.
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Bratchenko IA, Bratchenko LA, Moryatov AA, Khristoforova YA, Artemyev DN, Myakinin OO, Orlov AE, Kozlov SV, Zakharov VP. In vivo diagnosis of skin cancer with a portable Raman spectroscopic device. Exp Dermatol 2021; 30:652-663. [PMID: 33566431 DOI: 10.1111/exd.14301] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 01/29/2021] [Accepted: 02/05/2021] [Indexed: 12/18/2022]
Abstract
In this study, we performed in vivo diagnosis of skin cancer based on implementation of a portable low-cost spectroscopy setup combining analysis of Raman and autofluorescence spectra in the near-infrared region (800-915 nm). We studied 617 cases of skin neoplasms (615 patients, 70 melanomas, 122 basal cell carcinomas, 12 squamous cell carcinomas and 413 benign tumors) in vivo with a portable setup. The studies considered the patients examined by GPs in local clinics and directed to a specialized Oncology Dispensary with suspected skin cancer. Each sample was histologically examined after excisional biopsy. The spectra were classified with a projection on latent structures and discriminant analysis. To check the classification models stability, a 10-fold cross-validation was performed. We obtained ROC AUCs of 0.75 (0.71-0.79; 95% CI), 0.69 (0.63-0.76; 95% CI) and 0.81 (0.74-0.87; 95% CI) for classification of a) malignant and benign tumors, b) melanomas and pigmented tumors and c) melanomas and seborrhoeic keratosis, respectively. The positive and negative predictive values ranged from 20% to 52% and from 73% to 99%, respectively. The biopsy ratio varied from 0.92:1 to 4.08:1 (at sensitivity levels from 90% to 99%). The accuracy of automatic analysis with the proposed system is higher than the accuracy of GPs and trainees, and is comparable or less to the accuracy of trained dermatologists. The proposed approach may be combined with other optical techniques of skin lesion analysis, such as dermoscopy- and spectroscopy-based computer-assisted diagnosis systems to increase accuracy of neoplasms classification.
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Affiliation(s)
- Ivan A Bratchenko
- Department of Laser and Biotechnical Systems, Samara University, Samara, Russia
| | | | - Alexander A Moryatov
- Department of Oncology, Samara State Medical University, Samara, Russia.,Department of Visual Localization Tumors, Samara Regional Clinical Oncology Dispensary, Samara, Russia
| | | | - Dmitry N Artemyev
- Department of Laser and Biotechnical Systems, Samara University, Samara, Russia
| | - Oleg O Myakinin
- Department of Laser and Biotechnical Systems, Samara University, Samara, Russia
| | - Andrey E Orlov
- Department of Visual Localization Tumors, Samara Regional Clinical Oncology Dispensary, Samara, Russia
| | - Sergey V Kozlov
- Department of Oncology, Samara State Medical University, Samara, Russia.,Department of Visual Localization Tumors, Samara Regional Clinical Oncology Dispensary, Samara, Russia
| | - Valery P Zakharov
- Department of Laser and Biotechnical Systems, Samara University, Samara, Russia
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Li H, Ning T, Yu F, Chen Y, Zhang B, Wang S. Raman Microspectroscopic Investigation and Classification of Breast Cancer Pathological Characteristics. Molecules 2021; 26:molecules26040921. [PMID: 33572420 PMCID: PMC7916258 DOI: 10.3390/molecules26040921] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 02/01/2021] [Accepted: 02/05/2021] [Indexed: 02/07/2023] Open
Abstract
Breast cancer is one of the major cancers of women in the world. Despite significant progress in its treatment, an early diagnosis can effectively reduce its incidence rate and mortality. To improve the reliability of Raman-based tumor detection and analysis methods, we conducted an ex vivo study to unveil the compositional features of healthy control (HC), solid papillary carcinoma (SPC), mucinous carcinoma (MC), ductal carcinoma in situ (DCIS), and invasive ductal carcinoma (IDC) tissue samples. Following the identification of biological variations occurring as a result of cancer invasion, principal component analysis followed by linear discriminate analysis (PCA-LDA) algorithm were adopted to distinguish spectral variations among different breast tissue groups. The achieved results confirmed that after training, the constructed classification model combined with the leave-one-out cross-validation (LOOCV) method was able to distinguish the different breast tissue types with 100% overall accuracy. The present study demonstrates that Raman spectroscopy combined with multivariate analysis technology has considerable potential for improving the efficiency and performance of breast cancer diagnosis.
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MESH Headings
- Adenocarcinoma, Mucinous/pathology
- Adenocarcinoma, Mucinous/surgery
- Algorithms
- Breast Neoplasms/classification
- Breast Neoplasms/pathology
- Breast Neoplasms/surgery
- Carcinoma, Ductal, Breast/pathology
- Carcinoma, Ductal, Breast/surgery
- Carcinoma, Intraductal, Noninfiltrating/pathology
- Carcinoma, Intraductal, Noninfiltrating/surgery
- Carcinoma, Papillary/pathology
- Carcinoma, Papillary/surgery
- Case-Control Studies
- Discriminant Analysis
- Female
- Follow-Up Studies
- Humans
- Middle Aged
- Principal Component Analysis
- Spectrum Analysis, Raman/methods
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12
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Gautam R, Peoples D, Jansen K, O'Connor M, Thomas G, Vanga S, Pence IJ, Mahadevan-Jansen A. Feature Selection and Rapid Characterization of Bloodstains on Different Substrates. APPLIED SPECTROSCOPY 2020; 74:1238-1251. [PMID: 32519560 DOI: 10.1177/0003702820937776] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Establishing the precise timeline of a crime can be challenging as current analytical techniques used suffer from many limitations and are destructive to the body fluids encountered at crime scenes. Raman spectroscopy has demonstrated excellent potential in forensic science as it provides direct information about the structural and molecular changes without the need for processing or extracting samples. However, its current applicability is limited to pure body fluids, as signals from the substrate underlying these fluids greatly influence the current models used for age estimation. In this study, we utilized Raman spectroscopy to identify selective spectral markers that delineate the bloodstain age in the presence of interfering signals from the substrate. The pure bloodstains and the bloodstains on the substrate were aged for two weeks at 21 ± 2 ℃ in the dark. Least absolute shrinkage and selection operator (LASSO) regression was employed to guide the feature selection in the presence of interference from substrates to accurately predict the bloodstain age. Substrate-specific regression models guided by an automated feature selection algorithm yielded low values of predictive root mean square error (0.207, 0.204, 0.222 h in logarithmic scale) and high R2 (0.924, 0.926, 0.913) on test data consisting of blood spectra on floor tile, facial tissue, and linoleum-polymer substrates, respectively. This framework for an automated feature selection algorithm relies entirely on pure bloodstain spectra to train substrate-specific models for estimating the age of composite (blood on substrate) spectra. The model can thus be easily applied to any new composite spectra and is highly scalable to new environments. This study demonstrates that Raman spectroscopy coupled with LASSO could serve as a reliable and nondestructive technique to determine the age of bloodstains on any surface while aiding forensic investigations in real-world scenarios.
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Affiliation(s)
- Rekha Gautam
- Department of Biomedical Engineering, 5718Vanderbilt University, Nashville, USA
| | - Deandra Peoples
- Department of Biomedical Engineering, 5718Vanderbilt University, Nashville, USA
| | - Kiana Jansen
- Department of Biomedical Engineering, 5718Vanderbilt University, Nashville, USA
| | - Maggie O'Connor
- Department of Biomedical Engineering, 5718Vanderbilt University, Nashville, USA
| | - Giju Thomas
- Department of Biomedical Engineering, 5718Vanderbilt University, Nashville, USA
| | | | - Isaac J Pence
- Department of Biomedical Engineering, 5718Vanderbilt University, Nashville, USA
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13
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Power LJ, Fasolato C, Barbero A, Wendt DJ, Wixmerten A, Martin I, Asnaghi MA. Sensing tissue engineered cartilage quality with Raman spectroscopy and statistical learning for the development of advanced characterization assays. Biosens Bioelectron 2020; 166:112467. [DOI: 10.1016/j.bios.2020.112467] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 06/08/2020] [Accepted: 07/20/2020] [Indexed: 01/30/2023]
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14
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Grajdeanu IA, Vata D, Statescu L, Adriana Popescu I, Porumb-Andrese E, Ionela Patrascu A, Stincanu A, Taranu T, Crisan M, Gheuca Solovastru L. Use of imaging techniques for melanocytic naevi and basal cell carcinoma in integrative analysis (Review). Exp Ther Med 2020; 20:78-86. [PMID: 32508998 PMCID: PMC7271701 DOI: 10.3892/etm.2020.8620] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Accepted: 02/27/2020] [Indexed: 12/31/2022] Open
Abstract
Early detection of skin cancer is essential in order to obtain an improved prognosis. Clinicians need more objective and non-invasive examination methods to support their decision whether to biopsy or not tumoral lesions. These may include several imaging techniques such as dermoscopy, videodermoscopy, also known as sequential digital dermoscopy (SDD), computer-aided diagnosis (CAD), total body photography, imaging and high-frequency ultrasonography (HFUS), reflectance confocal microscopy, multiphoton tomography, electrical impedance spectroscopy, Raman spectroscopy, stepwise two-photon-laser spectroscopy and quantitative dynamic infrared. This review summarizes the current developments in the field of melanocytic lesions, such as naevi and basal cell carcinoma (BCC) imaging techniques. The aim was to collect and analyze data concerning types, indications, advantages and disadvantages of modern imaging techniques for in vivo skin tumor diagnosis. Two main methods were focused on, namely videodermoscopy and HFUS, which can be included in daily dermatologists' practice. In skin tumors HFUS allows the assessment of tumoral lesions with depth smaller than 1.5 cm, being described a correlation between ultrasonographic depth and the histologic index.
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Affiliation(s)
- Ioana-Alina Grajdeanu
- Department of Dermatology, 'Grigore T. Popa' University of Medicine and Pharmacy, Faculty of Medicine, 700115 Iasi, Romania
| | - Dan Vata
- Department of Dermatology, 'Grigore T. Popa' University of Medicine and Pharmacy, Faculty of Medicine, 700115 Iasi, Romania.,Clinic of Dermatology, Department of Dermatology, 'St. Spiridon' County Emergency Clinical Hospital, 700111 Iasi, Romania
| | - Laura Statescu
- Department of Dermatology, 'Grigore T. Popa' University of Medicine and Pharmacy, Faculty of Medicine, 700115 Iasi, Romania.,Clinic of Dermatology, Department of Dermatology, 'St. Spiridon' County Emergency Clinical Hospital, 700111 Iasi, Romania
| | - Ioana Adriana Popescu
- Department of Dermatology, 'Grigore T. Popa' University of Medicine and Pharmacy, Faculty of Medicine, 700115 Iasi, Romania.,Clinic of Dermatology, Department of Dermatology, 'St. Spiridon' County Emergency Clinical Hospital, 700111 Iasi, Romania
| | - Elena Porumb-Andrese
- Department of Dermatology, 'Grigore T. Popa' University of Medicine and Pharmacy, Faculty of Medicine, 700115 Iasi, Romania.,Clinic of Dermatology, Department of Dermatology, 'St. Spiridon' County Emergency Clinical Hospital, 700111 Iasi, Romania
| | - Adriana Ionela Patrascu
- Clinic of Dermatology, Department of Dermatology, 'St. Spiridon' County Emergency Clinical Hospital, 700111 Iasi, Romania
| | - Alina Stincanu
- Clinic of Dermatology, Department of Dermatology, 'St. Spiridon' County Emergency Clinical Hospital, 700111 Iasi, Romania
| | - Tatiana Taranu
- Department of Dermatology, 'Grigore T. Popa' University of Medicine and Pharmacy, Faculty of Dental Medicine, 700115 Iasi, Romania.,Clinic of Dermatology, Department of Dermatology, CF Iasi Hospital, 700506 Iasi, Romania
| | - Maria Crisan
- Department of Dermatology, 'Iuliu Hatieganu' University of Medicine and Pharmacy, 400000 Cluj-Napoca, Romania
| | - Laura Gheuca Solovastru
- Department of Dermatology, 'Grigore T. Popa' University of Medicine and Pharmacy, Faculty of Medicine, 700115 Iasi, Romania.,Clinic of Dermatology, Department of Dermatology, 'St. Spiridon' County Emergency Clinical Hospital, 700111 Iasi, Romania
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15
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Zhao J, Zeng H, Kalia S, Lui H. Incorporating patient demographics into Raman spectroscopy algorithm improves in vivo skin cancer diagnostic specificity. TRANSLATIONAL BIOPHOTONICS 2019. [DOI: 10.1002/tbio.201900016] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Affiliation(s)
- Jianhua Zhao
- Photomedicine Institute, Department of Dermatology and Skin ScienceUniversity of British Columbia and Vancouver Coastal Health Research Institute Vancouver British Columbia Canada
- Integrative Oncology DepartmentImaging Unit, BC Cancer Research Center Vancouver British Columbia Canada
| | - Haishan Zeng
- Photomedicine Institute, Department of Dermatology and Skin ScienceUniversity of British Columbia and Vancouver Coastal Health Research Institute Vancouver British Columbia Canada
- Integrative Oncology DepartmentImaging Unit, BC Cancer Research Center Vancouver British Columbia Canada
| | - Sunil Kalia
- Photomedicine Institute, Department of Dermatology and Skin ScienceUniversity of British Columbia and Vancouver Coastal Health Research Institute Vancouver British Columbia Canada
- Cancer Control Research DepartmentBC Cancer Research Center Vancouver British Columbia Canada
| | - Harvey Lui
- Photomedicine Institute, Department of Dermatology and Skin ScienceUniversity of British Columbia and Vancouver Coastal Health Research Institute Vancouver British Columbia Canada
- Integrative Oncology DepartmentImaging Unit, BC Cancer Research Center Vancouver British Columbia Canada
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16
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Zúñiga WC, Jones V, Anderson SM, Echevarria A, Miller NL, Stashko C, Schmolze D, Cha PD, Kothari R, Fong Y, Storrie-Lombardi MC. Raman Spectroscopy for Rapid Evaluation of Surgical Margins during Breast Cancer Lumpectomy. Sci Rep 2019; 9:14639. [PMID: 31601985 PMCID: PMC6787043 DOI: 10.1038/s41598-019-51112-0] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 09/20/2019] [Indexed: 12/21/2022] Open
Abstract
Failure to precisely distinguish malignant from healthy tissue has severe implications for breast cancer surgical outcomes. Clinical prognoses depend on precisely distinguishing healthy from malignant tissue during surgery. Laser Raman spectroscopy (LRS) has been previously shown to differentiate benign from malignant tissue in real time. However, the cost, assembly effort, and technical expertise needed for construction and implementation of the technique have prohibited widespread adoption. Recently, Raman spectrometers have been developed for non-medical uses and have become commercially available and affordable. Here we demonstrate that this current generation of Raman spectrometers can readily identify cancer in breast surgical specimens. We evaluated two commercially available, portable, near-infrared Raman systems operating at excitation wavelengths of either 785 nm or 1064 nm, collecting a total of 164 Raman spectra from cancerous, benign, and transitional regions of resected breast tissue from six patients undergoing mastectomy. The spectra were classified using standard multivariate statistical techniques. We identified a minimal set of spectral bands sufficient to reliably distinguish between healthy and malignant tissue using either the 1064 nm or 785 nm system. Our results indicate that current generation Raman spectrometers can be used as a rapid diagnostic technique distinguishing benign from malignant tissue during surgery.
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Affiliation(s)
- Willie C Zúñiga
- Harvey Mudd College, Department of Physics, 301 Platt Blvd., Claremont, CA, 91711, USA
| | - Veronica Jones
- Harvey Mudd College, Department of Engineering, 301 Platt Blvd., Claremont, CA, 91711, USA.
| | - Sarah M Anderson
- Harvey Mudd College, Department of Engineering, 301 Platt Blvd., Claremont, CA, 91711, USA
| | - Alex Echevarria
- Harvey Mudd College, Department of Physics, 301 Platt Blvd., Claremont, CA, 91711, USA
| | - Nathaniel L Miller
- Harvey Mudd College, Department of Engineering, 301 Platt Blvd., Claremont, CA, 91711, USA
| | - Connor Stashko
- Harvey Mudd College, Department of Engineering, 301 Platt Blvd., Claremont, CA, 91711, USA
| | - Daniel Schmolze
- City of Hope National Medical Center, Department of Surgery, 1500 E. Duarte Rd, Duarte, CA, 91010, USA
| | - Philip D Cha
- Harvey Mudd College, Department of Engineering, 301 Platt Blvd., Claremont, CA, 91711, USA
| | - Ragini Kothari
- City of Hope National Medical Center, Department of Surgery, 1500 E. Duarte Rd, Duarte, CA, 91010, USA
- Harvey Mudd College, Department of Engineering, 301 Platt Blvd., Claremont, CA, 91711, USA
| | - Yuman Fong
- City of Hope National Medical Center, Department of Surgery, 1500 E. Duarte Rd, Duarte, CA, 91010, USA
| | - Michael C Storrie-Lombardi
- Harvey Mudd College, Department of Physics, 301 Platt Blvd., Claremont, CA, 91711, USA
- Kinohi Institute, Inc., 530S. Lake Avenue, Pasadena, CA, 91101, USA
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17
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18
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Ralbovsky NM, Lednev IK. Raman spectroscopy and chemometrics: A potential universal method for diagnosing cancer. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 219:463-487. [PMID: 31075613 DOI: 10.1016/j.saa.2019.04.067] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 04/20/2019] [Accepted: 04/24/2019] [Indexed: 05/14/2023]
Abstract
Cancer is the second-leading cause of death worldwide. It affects an unfathomable number of people, with almost 16 million Americans currently living with it. While many cancers can be detected, current diagnostic efforts exhibit definite room for improvement. It is imperative that a person be diagnosed with cancer as early on in its progression as possible. An earlier diagnosis allows for the best treatment and intervention options available to be presented. Unfortunately, existing methods for diagnosing cancer can be expensive, invasive, inconclusive or inaccurate, and are not always made during initial stages of the disease. As such, there is a crucial unmet need to develop a singular universal method that is reliable, cost-effective, and non-invasive and can diagnose all forms of cancer early-on. Raman spectroscopy in combination with advanced statistical analysis is offered here as a potential solution for this need. This review covers recently published research in which Raman spectroscopy was used for the purpose of diagnosing cancer. The benefits and the risks of the methodology are presented; however, there is overwhelming evidence that suggests Raman spectroscopy is highly suitable for becoming the first universal method to be used for diagnosing cancer.
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Affiliation(s)
- Nicole M Ralbovsky
- Department of Chemistry, University at Albany, SUNY, 1400 Washington Avenue, Albany, NY 12222, USA
| | - Igor K Lednev
- Department of Chemistry, University at Albany, SUNY, 1400 Washington Avenue, Albany, NY 12222, USA.
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19
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Kumamoto Y, Mochizuki K, Hashimoto K, Harada Y, Tanaka H, Fujita K. High-Throughput Cell Imaging and Classification by Narrowband and Low-Spectral-Resolution Raman Microscopy. J Phys Chem B 2019; 123:2654-2661. [PMID: 30830787 DOI: 10.1021/acs.jpcb.8b11295] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We investigated the use of narrowband Raman spectra for rapid label-free molecular imaging aimed at cell classification using principal component regression and linear discriminant analysis. In the classification of breast nontumorigenic epithelial and cancer cell lines, the classification accuracies using a spectral range of 100 cm-1 were equivalent to or better than that with using the fingerprint and high-wavenumber regions. Narrowing the Raman spectral range for analysis allows reduction of the charge-coupled device (CCD) pixels required for spectrum detection, resulting in the improvement of image acquisition speed with adequate classification accuracy. Our measurements revealed that the wavenumber region at 1397-1501 cm-1 can provide molecular information sufficient for cell classification without causing notable errors in the baseline-correction. A spectral resolution of ∼9 cm-1 was found to be sufficient to provide high accuracy in cell classification, which allowed us to apply pixel binning at the CCD readout for further acceleration of the imaging speed. As a result, the acquisition time for a 1200 × 1500 pixels Raman hyperspectral image at 1397-1501 cm-1 was reduced to 21 min. Under this condition, different cell lines were classified at accuracies higher than 90%. The presented approach will improve throughput of cell and tissue analysis and classification using Raman spectroscopy and extend practical uses of Raman imaging in biology and medicine.
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Affiliation(s)
- Yasuaki Kumamoto
- Department of Pathology and Cell Regulation, Graduate School of Medical Sciences , Kyoto Prefectural University of Medicine , 465 Kajiicho, Kawaramachi-Hirokoji , Kamigyo, Kyoto , Kyoto 6028566 , Japan
| | | | - Kosuke Hashimoto
- Department of Pathology and Cell Regulation, Graduate School of Medical Sciences , Kyoto Prefectural University of Medicine , 465 Kajiicho, Kawaramachi-Hirokoji , Kamigyo, Kyoto , Kyoto 6028566 , Japan
| | - Yoshinori Harada
- Department of Pathology and Cell Regulation, Graduate School of Medical Sciences , Kyoto Prefectural University of Medicine , 465 Kajiicho, Kawaramachi-Hirokoji , Kamigyo, Kyoto , Kyoto 6028566 , Japan
| | - Hideo Tanaka
- Department of Pathology and Cell Regulation, Graduate School of Medical Sciences , Kyoto Prefectural University of Medicine , 465 Kajiicho, Kawaramachi-Hirokoji , Kamigyo, Kyoto , Kyoto 6028566 , Japan
| | - Katsumasa Fujita
- Department of Pathology and Cell Regulation, Graduate School of Medical Sciences , Kyoto Prefectural University of Medicine , 465 Kajiicho, Kawaramachi-Hirokoji , Kamigyo, Kyoto , Kyoto 6028566 , Japan
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20
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Darvin ME, Schleusener J, Parenz F, Seidel O, Krafft C, Popp J, Lademann J. Confocal Raman microscopy combined with optical clearing for identification of inks in multicolored tattooed skin in vivo. Analyst 2018; 143:4990-4999. [PMID: 30225475 DOI: 10.1039/c8an01213j] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Raman measurements applied on freshly tattooed porcine skin ex vivo showed a possibility of obtaining the ink pigment related information in the skin. Based on these results, confocal Raman microscopy was used to identify the tattoo ink pigments of different colors in multicolored tattooed human skin in vivo. The Raman signatures of tattoo ink pigments were unique. Therefore, it could be shown that the applied method is successful for the identification of the tattoo ink pigments in human skin in vivo down to depths of approx. 50 μm, which is sufficient to screen the entire epidermis and the top of the papillary dermis area on the forearm and leg skin sites. Additional application of the optical clearing technique in vivo by topical application of glycerol, combined with tape stripping removal of the uppermost stratum corneum layers and defatting allows the extension of depths of investigation in tattooed skin down to approx. 400 μm, i.e. to cover the entire papillary dermis and a large part of the reticular dermis. Thus, the tattoo ink pigments were identified in vivo and depth-dependently in human tattooed skin confirming their presence in the papillary and reticular dermis. The proposed non-invasive in vivo Raman screening combined with optical clearing for identifying the tattoo pigments in the dermis can be an important task preceding a laser-based tattoo removal procedure and for determining the optimal laser parameters.
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Affiliation(s)
- Maxim E Darvin
- Charité- Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Dermatology, Venerology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Charitéplatz 1, 10117 Berlin, Germany.
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21
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Zaidan AA, Zaidan BB, Albahri OS, Alsalem MA, Albahri AS, Yas QM, Hashim M. A review on smartphone skin cancer diagnosis apps in evaluation and benchmarking: coherent taxonomy, open issues and recommendation pathway solution. HEALTH AND TECHNOLOGY 2018. [DOI: 10.1007/s12553-018-0223-9] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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22
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Zhao J, Zeng H, Kalia S, Lui H. Using Raman Spectroscopy to Detect and Diagnose Skin Cancer In Vivo. Dermatol Clin 2017; 35:495-504. [PMID: 28886805 DOI: 10.1016/j.det.2017.06.010] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Raman spectroscopy provides a noninvasive bedside tool that captures unique optical signals via molecular vibrations in tissue samples. Raman theory was discovered at the beginning of the twentieth century, but it was not until the past few decades that it has been used to differentiate skin neoplasms. We provide a brief description of Raman spectroscopy for in vivo skin cancer diagnosis, including the physical principles underlying Raman spectroscopy, its advantages, typical spectra of skin pathologies, and its clinical application for aiding skin cancer diagnosis.
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Affiliation(s)
- Jianhua Zhao
- Photomedicine Institute, Department of Dermatology and Skin Science, Vancouver Coastal Health Research Institute, The University of British Columbia, 835 West 10th Avenue, Vancouver, British Columbia V5Z 4E8, Canada; Imaging Unit, Integrative Oncology Department, The BC Cancer Agency Research Center, 675 West 10th Avenue, Vancouver, British Columbia V5Z 1L3, Canada
| | - Haishan Zeng
- Photomedicine Institute, Department of Dermatology and Skin Science, Vancouver Coastal Health Research Institute, The University of British Columbia, 835 West 10th Avenue, Vancouver, British Columbia V5Z 4E8, Canada; Imaging Unit, Integrative Oncology Department, The BC Cancer Agency Research Center, 675 West 10th Avenue, Vancouver, British Columbia V5Z 1L3, Canada
| | - Sunil Kalia
- Photomedicine Institute, Department of Dermatology and Skin Science, Vancouver Coastal Health Research Institute, The University of British Columbia, 835 West 10th Avenue, Vancouver, British Columbia V5Z 4E8, Canada; Imaging Unit, Integrative Oncology Department, The BC Cancer Agency Research Center, 675 West 10th Avenue, Vancouver, British Columbia V5Z 1L3, Canada
| | - Harvey Lui
- Photomedicine Institute, Department of Dermatology and Skin Science, Vancouver Coastal Health Research Institute, The University of British Columbia, 835 West 10th Avenue, Vancouver, British Columbia V5Z 4E8, Canada; Imaging Unit, Integrative Oncology Department, The BC Cancer Agency Research Center, 675 West 10th Avenue, Vancouver, British Columbia V5Z 1L3, Canada.
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23
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Kim S, Byun KM, Lee SY. Influence of water content on Raman spectroscopy characterization of skin sample. BIOMEDICAL OPTICS EXPRESS 2017; 8:1130-1138. [PMID: 28271008 PMCID: PMC5330544 DOI: 10.1364/boe.8.001130] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 01/13/2017] [Accepted: 01/22/2017] [Indexed: 05/20/2023]
Abstract
We report that the Raman spectrum obtained from porcine skin varies significantly with the change of skin water content. At different water contents from 40 to 55 wt.%, the Raman spectra results using confocal Raman spectroscopy show that the spectral variation of porcine skin is highly affected by skin water content. Experimental data are consistent with the Monte Carlo calculation and it is proved that the intensity of the Raman spectrum depends on the angle distribution and collection efficiency of backscattered light from the sample surface for a varied water content. It is suggested that water content for a given skin sample should be controlled carefully to minimize errors and deviations in the Raman peak analyses.
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Affiliation(s)
- Soogeun Kim
- Department of Biomedical Engineering, Kyung Hee University, Yongin 17104, South Korea; Targeted Precision Treatment Research Center, Kyung Hee University, Seoul 02447, South Korea
| | - Kyung Min Byun
- Department of Biomedical Engineering, Kyung Hee University, Yongin 17104, South Korea; Targeted Precision Treatment Research Center, Kyung Hee University, Seoul 02447, South Korea;
| | - Soo Yeol Lee
- Department of Biomedical Engineering, Kyung Hee University, Yongin 17104, South Korea; Targeted Precision Treatment Research Center, Kyung Hee University, Seoul 02447, South Korea;
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Rajadhyaksha M, Marghoob A, Rossi A, Halpern AC, Nehal KS. Reflectance confocal microscopy of skin in vivo: From bench to bedside. Lasers Surg Med 2016; 49:7-19. [PMID: 27785781 DOI: 10.1002/lsm.22600] [Citation(s) in RCA: 136] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/19/2016] [Indexed: 12/24/2022]
Abstract
Following more than two decades of effort, reflectance confocal microscopy (RCM) imaging of skin was granted codes for reimbursement by the US Centers for Medicare and Medicaid Services. Dermatologists in the USA have started billing and receiving reimbursement for the imaging procedure and for the reading and interpretation of images. RCM imaging combined with dermoscopic examination is guiding the triage of lesions into those that appear benign, which are being spared from biopsy, against those that appear suspicious, which are then biopsied. Thus far, a few thousand patients have been spared from biopsy of benign lesions. The journey of RCM imaging from bench to bedside is certainly a success story, but still much more work lies ahead toward wider dissemination, acceptance, and adoption. We present a brief review of RCM imaging and highlight key challenges and opportunities. The success of RCM imaging paves the way for other emerging optical technologies, as well-and our bet for the future is on multimodal approaches. Lasers Surg. Med. 49:7-19, 2017. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Milind Rajadhyaksha
- Dermatology Service, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Ashfaq Marghoob
- Dermatology Service, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Anthony Rossi
- Dermatology Service, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Allan C Halpern
- Dermatology Service, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Kishwer S Nehal
- Dermatology Service, Memorial Sloan Kettering Cancer Center, New York, New York
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