1
|
Vaz PG, Brea LS, Silva VB, van Eijgen J, Stalmans I, Cardoso J, van Walsum T, Klein S, Barbosa Breda J, Andrade De Jesus D. Retinal OCT speckle as a biomarker for glaucoma diagnosis and staging. Comput Med Imaging Graph 2023; 108:102256. [PMID: 37329820 DOI: 10.1016/j.compmedimag.2023.102256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 05/23/2023] [Accepted: 05/30/2023] [Indexed: 06/19/2023]
Abstract
This paper presents a novel image analysis strategy that increases the potential of macular Optical Coherence Tomography (OCT) by using speckle features as biomarkers in different stages of glaucoma. A large pool of features (480) were computed for a subset of macular OCT volumes of the Leuven eye study cohort. The dataset contained 258 subjects that were divided into four groups based on their glaucoma severity: Healthy (56), Mild (94), Moderate (48), and Severe (60). The OCT speckle features were categorized as statistical properties, statistical distributions, contrast, spatial gray-level dependence matrices, and frequency domain features. The averaged thicknesses of ten retinal layers were also collected. Kruskal-Wallis H test and multivariable regression models were used to infer the most significant features related to glaucoma severity classification and to the correlation with visual field mean deviation. Four features were selected as being the most relevant: the ganglion cell layer (GCL) and the inner plexiform layer (IPL) thicknesses, and two OCT speckle features, the data skewness computed on the retinal nerve fiber layer (RNFL) and the scale parameter (a) of the generalized gamma distribution fitted to the GCL data. Based on a significance level of 0.05, the regression models revealed that RNFL skewness exhibited the highest significance among the features considered for glaucoma severity staging (p-values of 8.6×10-6 for the logistic model and 2.8×10-7 for the linear model). Furthermore, it demonstrated a strong negative correlation with the visual field mean deviation (ρ=-0.64). The post hoc analysis revealed that, when distinguishing healthy controls from glaucoma subjects, GCL thickness is the most relevant feature (p-value of 8.7×10-5). Conversely, when comparing the Mild versus Moderate stages of glaucoma, RNFL skewness emerged as the only feature exhibiting statistical significance (p-value = 0.001). This work shows that macular OCT speckle contains information that is currently not used in clinical practice, and not only complements structural measurements (thickness) but also has a potential for glaucoma staging.
Collapse
Affiliation(s)
- Pedro G Vaz
- LIBPhys, Department of Physics, University of Coimbra, Coimbra, Portugal.
| | - Luisa Sanchez Brea
- Department of Radiology and Nuclear Medicine, Erasmus MC, Rotterdam, The Netherlands; Department of Ophthalmology, Erasmus MC, Rotterdam, The Netherlands
| | - Vania Bastos Silva
- LIBPhys, Department of Physics, University of Coimbra, Coimbra, Portugal; Department of Radiology and Nuclear Medicine, Erasmus MC, Rotterdam, The Netherlands
| | - Jan van Eijgen
- Department of Neurosciences, KU Leuven, Leuven, Belgium; Department of Ophthalmology, University Hospitals UZ Leuven, Leuven, Belgium
| | - Ingeborg Stalmans
- Department of Neurosciences, KU Leuven, Leuven, Belgium; Department of Ophthalmology, University Hospitals UZ Leuven, Leuven, Belgium
| | - João Cardoso
- LIBPhys, Department of Physics, University of Coimbra, Coimbra, Portugal
| | - Theo van Walsum
- Department of Radiology and Nuclear Medicine, Erasmus MC, Rotterdam, The Netherlands
| | - Stefan Klein
- Department of Radiology and Nuclear Medicine, Erasmus MC, Rotterdam, The Netherlands
| | - João Barbosa Breda
- Department of Neurosciences, KU Leuven, Leuven, Belgium; Cardiovascular R&D Center, Faculty of Medicine of the University of Porto, Porto, Portugal; Department of Ophthalmology, São João Universitary Hospital Center, Porto, Portugal
| | - Danilo Andrade De Jesus
- Department of Radiology and Nuclear Medicine, Erasmus MC, Rotterdam, The Netherlands; Department of Ophthalmology, Erasmus MC, Rotterdam, The Netherlands
| |
Collapse
|
2
|
Qureshi MM, Allam N, Peters T, Demidov V, Vitkin A. Detection and differentiation of semi-transparent materials simulating biological structures using optical coherence tomography: a phantom study. JOURNAL OF BIOMEDICAL OPTICS 2022; 27:100501. [PMID: 36221173 PMCID: PMC9553520 DOI: 10.1117/1.jbo.27.10.100501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 09/14/2022] [Indexed: 06/16/2023]
Abstract
SIGNIFICANCE Lymphatic and peripheral nervous system imaging is of prime importance for monitoring various important pathologic processes including cancer development and metastasis, and response to therapy. AIM Optical coherence tomography (OCT) is a promising approach for this imaging task but is challenged by the near-transparent nature of these structures. Our aim is to detect and differentiate semi-transparent materials using OCT texture analysis, toward label-free neurography and lymphography. APPROACH We have recently demonstrated an innovative OCT texture analysis-based approach that used speckle statistics to image lymphatics and nerves in-vivo that does not rely on negative contrast. However, these two near-transparent structures could not be easily differentiated from each other in the texture analysis parameter space. Here, we perform a rigorous follow-up study to improve upon this differentiation in controlled phantoms mimicking the optical properties of these tissues. RESULTS The results of the three-parameter Rayleigh distribution fit to the OCT images of six types of tissue-mimicking materials varying in transparency and biophysical properties demonstrate clear differences between them, suggesting routes for improved lymphatics-nerves differentiation. CONCLUSIONS We demonstrate a novel OCT texture analysis-based lymphatics-nerves differentiation methodology in tissue-simulating phantoms. Future work will focus on longitudinal in-vivo lymphangiography and neurography in response to cancer therapeutics toward adaptive personalized medicine.
Collapse
Affiliation(s)
- Muhammad Mohsin Qureshi
- Princess Margaret Cancer Centre, Division of Biophysics and Bioimaging, Toronto, Ontario, Canada
| | - Nader Allam
- University of Toronto, Department of Medical Biophysics, Toronto, Ontario, Canada
| | - Taylor Peters
- University of Toronto, Division of Engineering Science, Ontario, Canada
| | - Valentin Demidov
- Geisel School of Medicine at Dartmouth, Hanover, New Hampshire, USA
| | - Alex Vitkin
- Princess Margaret Cancer Centre, Division of Biophysics and Bioimaging, Toronto, Ontario, Canada
- University of Toronto, Department of Medical Biophysics, Toronto, Ontario, Canada
- University of Toronto, Department of Radiation Oncology, Toronto, Ontario, Canada
| |
Collapse
|
3
|
Novel Elastography-Inspired Approach to Angiographic Visualization in Optical Coherence Tomography. PHOTONICS 2022. [DOI: 10.3390/photonics9060401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
In this paper, we present a new approach to contrast-agent-free angiographic visualization in optical coherence tomography (OCT). The proposed approach has much in common with imaging of local interframe strains in OCT-based elastography and utilizes the fact that the interframe motion of blood particles leads to discontinuity of strains within the vessel cross section. By this reasoning, we call this approach “elastography-inspired”. Here, we first elucidate the essence and main features of the elastography-inspired approach using numerical simulation of OCT data. The simulations allow one to introduce both moving scatterers imitating blood flow in vessels as well as various masking motions imitating natural motions of living “solid” tissue surrounding the vessels. Second, using real OCT signals, we present comparative results of angiographic processing using the proposed elastography-inspired approach and a realization of OCA based on high-pass filtering of temporal variability of a series of OCT B-scans. The two methods can use the same initial dataset and the high-pass filtering OCA has already been routinely applied in both animal experiments and on patients. The new elastography-inspired method has a similar computational efficiency, and it is intrinsically able to compensate spatially-inhomogeneous masking tissue motions and demonstrates high robustness with respect to motion artefacts. Thus, the new approach looks very promising for enabling wider application of OCA in both laboratory studies on animals and, most importantly, for wider clinical applications on patients.
Collapse
|
4
|
Optical Coherence Tomography Angiography and Attenuation Imaging for Label-Free Observation of Functional Changes in the Intestine after Sympathectomy: A Pilot Study. PHOTONICS 2022. [DOI: 10.3390/photonics9050304] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
We present in this study optical coherence tomography angiography (OCTA) and OCT attenuation imaging (OCTAI) for in vivo non-destructive visualization of intramural blood and lymphatic vessels of the intestine wall. Rabbit small intestine in the norm and after thoracolumbar sympathectomy served as the object of the intraoperative study. Compared to OCTA real-time imaging, OCTAI takes several minutes and can be termed as “nearly real time”. OCTAI signal processing was modified to take into account the signal-to-noise ratio and the final thickness of the intestine wall. The results showed that, after sympathectomy, changes in functioning of intramural blood and lymphatic vessels were observed with a high statistical significance. The occurrence of trauma-induced constriction of the blood and lymphatic vessels led to an especially pronounced decrease in the length of small-caliber (<30 µm) blood vessels (p < 10−5), as well as in the volumetric density of lymphatic vessels (on average by ~50%) compared to their initial state. Remarkably, OCTA/OCTAI modalities provide the unique ability for “nearly-instant detection” of changes in functional status of the tissues, long before they become visible on histology. The proposed approach can be used in further experiments to clarify the mechanisms of changes in intestinal blood and lymph flows in response to trauma of the nervous system. Furthermore, potentially it can be used intraoperatively in patients requiring express diagnosis of the state of intramural blood and lymph circulation.
Collapse
|
5
|
Baraldi JH, Martyn GV, Shurin GV, Shurin MR. Tumor Innervation: History, Methodologies, and Significance. Cancers (Basel) 2022; 14:cancers14081979. [PMID: 35454883 PMCID: PMC9029781 DOI: 10.3390/cancers14081979] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 04/01/2022] [Accepted: 04/08/2022] [Indexed: 12/11/2022] Open
Abstract
Simple Summary This comprehensive review of tumor innervation summarizes the literature from the earliest publications on the topic to the most recent. It addresses the positive and negative evidence of tumor innervation and the historical developments in thought and methodology that have led to the consensus that tumors are innervated. The role of the immune response is described, as are some important biochemical and physiological mechanisms relevant to regulation of cancer development. Abstract The role of the nervous system in cancer development and progression has been under experimental and clinical investigation since nineteenth-century observations in solid tumor anatomy and histology. For the first half of the twentieth century, methodological limitations and opaque mechanistic concepts resulted in ambiguous evidence of tumor innervation. Differential spatial distribution of viable or disintegrated nerve tissue colocalized with neoplastic tissue led investigators to conclude that solid tumors either are or are not innervated. Subsequent work in electrophysiology, immunohistochemistry, pathway enrichment analysis, neuroimmunology, and neuroimmunooncology have bolstered the conclusion that solid tumors are innervated. Regulatory mechanisms for cancer-related neurogenesis, as well as specific operational definitions of perineural invasion and axonogenesis, have helped to explain the consensus observation of nerves at the periphery of the tumor signifying a functional role of nerves, neurons, neurites, and glia in tumor development.
Collapse
Affiliation(s)
- James H. Baraldi
- Department of Neuroscience, University of Pittsburgh, Pittsburgh, PA 15260, USA;
| | - German V. Martyn
- Biomedical Studies Program, Chatham University, Pittsburgh, PA 15232, USA;
| | - Galina V. Shurin
- Department of Pathology, University of Pittsburgh, Pittsburgh, PA 15213, USA;
| | - Michael R. Shurin
- Department of Pathology and Immunology, Division of Clinical Immunopathology, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA
- Correspondence:
| |
Collapse
|
6
|
Silva VB, Andrade De Jesus D, Klein S, van Walsum T, Cardoso J, Brea LS, Vaz PG. Signal-carrying speckle in optical coherence tomography: a methodological review on biomedical applications. JOURNAL OF BIOMEDICAL OPTICS 2022; 27:030901. [PMID: 35289154 PMCID: PMC8919025 DOI: 10.1117/1.jbo.27.3.030901] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 02/22/2022] [Indexed: 06/14/2023]
Abstract
SIGNIFICANCE Speckle has historically been considered a source of noise in coherent light imaging. However, a number of works in optical coherence tomography (OCT) imaging have shown that speckle patterns may contain relevant information regarding subresolution and structural properties of the tissues from which it is originated. AIM The objective of this work is to provide a comprehensive overview of the methods developed for retrieving speckle information in biomedical OCT applications. APPROACH PubMed and Scopus databases were used to perform a systematic review on studies published until December 9, 2021. From 146 screened studies, 40 were eligible for this review. RESULTS The studies were clustered according to the nature of their analysis, namely static or dynamic, and all features were described and analyzed. The results show that features retrieved from speckle can be used successfully in different applications, such as classification and segmentation. However, the results also show that speckle analysis is highly application-dependant, and the best approach varies between applications. CONCLUSIONS Several of the reviewed analyses were only performed in a theoretical context or using phantoms, showing that signal-carrying speckle analysis in OCT imaging is still in its early stage, and further work is needed to validate its applicability and reproducibility in a clinical context.
Collapse
Affiliation(s)
- Vania B. Silva
- University of Coimbra, Laboratory for Instrumentation, Biomedical Engineering and Radiation Physics (LIBPhys-UC), Department of Physics, Coimbra, Portugal
- University Medical Center Rotterdam, Department of Radiology and Nuclear Medicine, Erasmus MC, Biomedical Imaging Group Rotterdam, Rotterdam, The Netherlands
| | - Danilo Andrade De Jesus
- University Medical Center Rotterdam, Department of Radiology and Nuclear Medicine, Erasmus MC, Biomedical Imaging Group Rotterdam, Rotterdam, The Netherlands
| | - Stefan Klein
- University Medical Center Rotterdam, Department of Radiology and Nuclear Medicine, Erasmus MC, Biomedical Imaging Group Rotterdam, Rotterdam, The Netherlands
| | - Theo van Walsum
- University Medical Center Rotterdam, Department of Radiology and Nuclear Medicine, Erasmus MC, Biomedical Imaging Group Rotterdam, Rotterdam, The Netherlands
| | - João Cardoso
- University of Coimbra, Laboratory for Instrumentation, Biomedical Engineering and Radiation Physics (LIBPhys-UC), Department of Physics, Coimbra, Portugal
| | - Luisa Sánchez Brea
- University Medical Center Rotterdam, Department of Radiology and Nuclear Medicine, Erasmus MC, Biomedical Imaging Group Rotterdam, Rotterdam, The Netherlands
| | - Pedro G. Vaz
- University of Coimbra, Laboratory for Instrumentation, Biomedical Engineering and Radiation Physics (LIBPhys-UC), Department of Physics, Coimbra, Portugal
| |
Collapse
|
7
|
Niemczyk M, Iskander DR. Statistical analysis of corneal OCT speckle: a non-parametric approach. BIOMEDICAL OPTICS EXPRESS 2021; 12:6407-6421. [PMID: 34745745 PMCID: PMC8547992 DOI: 10.1364/boe.437937] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 09/01/2021] [Accepted: 09/03/2021] [Indexed: 06/13/2023]
Abstract
In biomedical optics, it is often of interest to statistically model the amplitude of the speckle using some distributional approximations with their parameters acting as biomarkers. In this paper, a paradigm shift is being advocated in which non-parametric approaches are used. Specifically, a range of distances, evaluated in different domains, between an empirical non-parametric distribution of the normalized speckle amplitude sample and the benchmark Rayleigh distribution, is considered. Using OCT images from phantoms, two ex-vivo experiments with porcine corneas and an in-vivo experiment with human corneas, an evidence is provided that the non-parametric approach, despite its simplicity, could lead to equivalent or better results than the parametric approaches with distributional approximations. Concluding, in practice, the non-parametric approach should be considered as the first choice to speckle modeling before a particular distributional approximation is utilized.
Collapse
|
8
|
Moiseev AA, Sirotkina MA, Potapov AL, Matveev LA, Vagapova NN, Kuznetsova IA, Gladkova ND. Lymph vessels visualization from optical coherence tomography data using depth-resolved attenuation coefficient calculation. JOURNAL OF BIOPHOTONICS 2021; 14:e202100055. [PMID: 34057296 DOI: 10.1002/jbio.202100055] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 04/26/2021] [Accepted: 05/11/2021] [Indexed: 06/12/2023]
Abstract
Multimodal optical coherent tomography grows popularity with researchers and clinicians over the past decade. One of the modalities is lymphangiography, which allows visualization of the lymphatic vessel networks within optical coherence tomography (OCT) imaging volume. In the present study, it is shown that lymphatic vessel visualization obtained from the depth-resolved attenuation coefficient distributions, corrected for the noise, shows improved contrast and detail in comparison with previously proposed approaches. We also argue that the two most popular approaches for lymphatic vessel visualization, namely simple intensity thresholding and vesselness calculation based on local Hessian matrix eigenvalues, imply different definitions of the lymphatic vessel's appearance in the OCT volume and lead to the different networks.
Collapse
Affiliation(s)
| | | | - Arseny L Potapov
- Privolzhsky Research Medical University, Nizhny Novgorod, Russia
| | - Lev A Matveev
- Institute of Applied Physics RAS, Nizhny Novgorod, Russia
| | - Nailya N Vagapova
- N.A. Semashko Nizhny Novgorod Regional Clinical Hospital, Nizhny Novgorod, Russia
| | | | | |
Collapse
|
9
|
Demidov V, Demidova N, Pires L, Demidova O, Flueraru C, Wilson BC, Alex Vitkin I. Volumetric tumor delineation and assessment of its early response to radiotherapy with optical coherence tomography. BIOMEDICAL OPTICS EXPRESS 2021; 12:2952-2967. [PMID: 34123510 PMCID: PMC8176804 DOI: 10.1364/boe.424045] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 04/05/2021] [Accepted: 04/07/2021] [Indexed: 06/12/2023]
Abstract
Texture analyses of optical coherence tomography (OCT) images have shown initial promise for differentiation of normal and tumor tissues. This work develops a fully automatic volumetric tumor delineation technique employing quantitative OCT image speckle analysis based on Gamma distribution fits. We test its performance in-vivo using immunodeficient mice with dorsal skin window chambers and subcutaneously grown tumor models. Tumor boundaries detection is confirmed using epi-fluorescence microscopy, combined photoacoustic-ultrasound imaging, and histology. Pilot animal study of tumor response to radiotherapy demonstrates high accuracy, objective nature, novelty of the proposed method in the volumetric separation of tumor and normal tissues, and the sensitivity of the fitting parameters to radiation-induced tissue changes. Overall, the developed methodology enables hitherto impossible longitudinal studies for detecting subtle tissue alterations stemming from therapeutic insult.
Collapse
Affiliation(s)
- Valentin Demidov
- University of Toronto, Faculty of Medicine, Department of Medical Biophysics, 101 College St., Toronto, M5G 1L7, Canada
- University Health Network, Princess Margaret Cancer Centre, 610 University Avenue, Toronto, M5G 2M9, Canada
- Authors contributed equally to this work
| | - Natalia Demidova
- University of Toronto at Mississauga, Department of Mathematical and Computational Sciences, 3359 Mississauga Road, Mississauga, L5L1C6, Canada
- Authors contributed equally to this work
| | - Layla Pires
- University Health Network, Princess Margaret Cancer Centre, 610 University Avenue, Toronto, M5G 2M9, Canada
| | - Olga Demidova
- Seneca College, Department of Arts and Science, 1750 Finch Ave. East, Toronto, M2J 2X5, Canada
| | - Costel Flueraru
- National Research Council Canada, Information Communication Technology, 1200 Montreal Road, Ottawa, K1A 0R6, Canada
| | - Brian C. Wilson
- University of Toronto, Faculty of Medicine, Department of Medical Biophysics, 101 College St., Toronto, M5G 1L7, Canada
- University Health Network, Princess Margaret Cancer Centre, 610 University Avenue, Toronto, M5G 2M9, Canada
| | - I. Alex Vitkin
- University of Toronto, Faculty of Medicine, Department of Medical Biophysics, 101 College St., Toronto, M5G 1L7, Canada
- University Health Network, Princess Margaret Cancer Centre, 610 University Avenue, Toronto, M5G 2M9, Canada
- University of Toronto, Faculty of Medicine, Department of Radiation Oncology, 149 College Street, Toronto, M5 T 1P5, Canada
| |
Collapse
|
10
|
Lai PY, Chang CH, Su HR, Kuo WC. Lymphatic vessel segmentation in optical coherence tomography by adding U-Net-based CNN for artifact minimization. BIOMEDICAL OPTICS EXPRESS 2020; 11:2679-2693. [PMID: 32499952 PMCID: PMC7249833 DOI: 10.1364/boe.389373] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 03/24/2020] [Accepted: 04/16/2020] [Indexed: 06/11/2023]
Abstract
The lymphatic system branches throughout the body to transport bodily fluid and plays a key immune-response role. Optical coherence tomography (OCT) is an emerging technique for the noninvasive and label-free imaging of lymphatic capillaries utilizing low scattering features of the lymph fluid. Here, the proposed lymphatic segmentation method combines U-Net-based CNN, a Hessian vesselness filter, and a modified intensity-thresholding to search the nearby pixels based on the binarized Hessian mask. Compared to previous approaches, the method can extract shapes more precisely, and the segmented result contains minimal artifacts, achieves the dice coefficient of 0.83, precision of 0.859, and recall of 0.803.
Collapse
Affiliation(s)
- Pei-Yu Lai
- Department of Biophotonics, National Yang-Ming University, 155, Sec-2, Li-Nong Street, Taipei 112, Taiwan
| | - Chung-Hsing Chang
- Skin Institute, Hualien Tzu Chi Hospital, Hualien, Taiwan
- Institute of Medical Sciences, Tzu Chi University, Hualien, Taiwan
| | - Hong-Ren Su
- Super Genius AItek Co., Ltd, New Taipei City, Taiwan
| | - Wen-Chuan Kuo
- Department of Biophotonics, National Yang-Ming University, 155, Sec-2, Li-Nong Street, Taipei 112, Taiwan
| |
Collapse
|
11
|
Gong P, Almasian M, van Soest G, de Bruin DM, van Leeuwen TG, Sampson DD, Faber DJ. Parametric imaging of attenuation by optical coherence tomography: review of models, methods, and clinical translation. JOURNAL OF BIOMEDICAL OPTICS 2020; 25:1-34. [PMID: 32246615 PMCID: PMC7118361 DOI: 10.1117/1.jbo.25.4.040901] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 02/28/2020] [Indexed: 05/07/2023]
Abstract
SIGNIFICANCE Optical coherence tomography (OCT) provides cross-sectional and volumetric images of backscattering from biological tissue that reveal the tissue morphology. The strength of the scattering, characterized by an attenuation coefficient, represents an alternative and complementary tissue optical property, which can be characterized by parametric imaging of the OCT attenuation coefficient. Over the last 15 years, a multitude of studies have been reported seeking to advance methods to determine the OCT attenuation coefficient and developing them toward clinical applications. AIM Our review provides an overview of the main models and methods, their assumptions and applicability, together with a survey of preclinical and clinical demonstrations and their translation potential. RESULTS The use of the attenuation coefficient, particularly when presented in the form of parametric en face images, is shown to be applicable in various medical fields. Most studies show the promise of the OCT attenuation coefficient in differentiating between tissues of clinical interest but vary widely in approach. CONCLUSIONS As a future step, a consensus on the model and method used for the determination of the attenuation coefficient is an important precursor to large-scale studies. With our review, we hope to provide a basis for discussion toward establishing this consensus.
Collapse
Affiliation(s)
- Peijun Gong
- The University of Western Australia, Department of Electrical, Electronic and Computer Engineering, Optical+Biomedical Engineering Laboratory, Perth, Western Australia, Australia
- Address all correspondence to Peijun Gong, E-mail:
| | - Mitra Almasian
- University of Amsterdam, Amsterdam University Medical Centers, Cancer Center Amsterdam, Amsterdam Cardiovascular Sciences, Department of Biomedical Engineering and Physics, Amsterdam, The Netherlands
| | - Gijs van Soest
- Erasmus MC, University Medical Center Rotterdam, Department of Cardiology, Rotterdam, The Netherlands
| | - Daniel M. de Bruin
- University of Amsterdam, Amsterdam University Medical Centers, Cancer Center Amsterdam, Amsterdam Cardiovascular Sciences, Department of Biomedical Engineering and Physics, Amsterdam, The Netherlands
| | - Ton G. van Leeuwen
- University of Amsterdam, Amsterdam University Medical Centers, Cancer Center Amsterdam, Amsterdam Cardiovascular Sciences, Department of Biomedical Engineering and Physics, Amsterdam, The Netherlands
| | - David D. Sampson
- The University of Western Australia, Department of Electrical, Electronic and Computer Engineering, Optical+Biomedical Engineering Laboratory, Perth, Western Australia, Australia
- University of Surrey, Surrey Biophotonics, Guildford, Surrey, United Kingdom
| | - Dirk J. Faber
- University of Amsterdam, Amsterdam University Medical Centers, Cancer Center Amsterdam, Amsterdam Cardiovascular Sciences, Department of Biomedical Engineering and Physics, Amsterdam, The Netherlands
| |
Collapse
|
12
|
Sirotkina MA, Gubarkova EV, Plekhanov AA, Sovetsky AA, Elagin VV, Matveyev AL, Matveev LA, Kuznetsov SS, Zagaynova EV, Gladkova ND, Zaitsev VY. In vivo assessment of functional and morphological alterations in tumors under treatment using OCT-angiography combined with OCT-elastography. BIOMEDICAL OPTICS EXPRESS 2020; 11:1365-1382. [PMID: 32206416 PMCID: PMC7075625 DOI: 10.1364/boe.386419] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 02/08/2020] [Accepted: 02/09/2020] [Indexed: 05/13/2023]
Abstract
Emerging methods of anti-tumor therapies require new approaches to tumor response evaluation, especially enabling label-free diagnostics and in vivo utilization. Here, to assess the tumor early reaction and predict its long-term response, for the first time we apply in combination the recently developed OCT extensions - optical coherence angiography (OCA) and compressional optical coherence elastography (OCE), thus enabling complementary functional/microstructural tumor characterization. We study two vascular-targeted therapies of different types, (1) anti-angiogenic chemotherapy (ChT) and (2) photodynamic therapy (PDT), aimed to indirectly kill tumor cells through blood supply injury. Despite different mechanisms of anti-angiogenic action for ChT and PDT, in both cases OCA demonstrated high sensitivity to blood perfusion cessation. The new method of OCE-based morphological segmentation revealed very similar histological structure alterations. The OCE results showed high correlation with conventional histology in evaluating percentages of necrotic and viable tumor zones. Such possibilities make OCE an attractive tool enabling previously inaccessible in vivo monitoring of individual tumor response to therapies without taking multiple biopsies.
Collapse
Affiliation(s)
| | | | | | | | - Vadim V. Elagin
- Privolzhsky Research Medical University, Nizhny Novgorod, Russia
| | | | - Lev A. Matveev
- Institute of Applied Physics RAS, Nizhny Novgorod, Russia
| | - Sergey S. Kuznetsov
- N.A. Semashko Nizhny Novgorod Regional Clinical Hospital, Nizhny Novgorod, Russia
| | | | | | | |
Collapse
|
13
|
Larin KV, Zhu D, Priezzhev A, Sampson DD. Recent progress in optical probing and manipulation of tissue: introduction. BIOMEDICAL OPTICS EXPRESS 2019; 10:5159-5161. [PMID: 31646038 PMCID: PMC6788591 DOI: 10.1364/boe.10.005159] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Indexed: 05/03/2023]
Abstract
This feature issue of Biomedical Optics Express represents a cross-section of the most recent work in tissue optics, including exciting developments in tissue optical clearing, deep tissue imaging, optical elastography, nanophotonics in tissue, and therapeutic applications of light, amongst others. A collection of 33 papers provides a comprehensive overview of current research in tissue optics, much of it inspired and informed by the pioneering work of Prof. Valery Tuchin. The issue contains three invited manuscripts and several mini-reviews that we hope will benefit researchers in this exciting area.
Collapse
Affiliation(s)
- Kirill V Larin
- Department of Biomedical Engineering, University of Houston, 3605 Cullen Boulevard, Houston, Texas 77204, USA
| | - Dan Zhu
- Britton Chance Center for Biomedical Photonics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
| | - Alexander Priezzhev
- Department of Physics and International Laser Center, Lomonosov Moscow State University, 1-2 Leninskie Gory, Moscow, 119992, Russia
| | - David D Sampson
- Surrey Biophotonics, School of Biosciences and Medicine, and Department of Physics, University of Surrey, Guildford, United Kingdom
- Optical + Biomedical Engineering Laboratory, Department of Electrical, Electronic & Computer Engineering, University of Western Australia, 35 Stirling Highway, Perth, Western Australia
| |
Collapse
|