Optical coherence tomography: fundamental principles, instrumental designs and biomedical applications

Popescu, Dan P.; Choo-Smith, Lin-P’ing; Flueraru, Costel; Mao, Youxin; Chang, Shoude; Disano, John; Sherif, Sherif M.; Sowa, Michael G.

doi:10.1007/s12551-011-0054-7

Cited by 162 publications

(108 citation statements)

References 103 publications

(98 reference statements)

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“…OCT is based on interferometry in so-called weakly coherent (i.e., polychromatic or white) light. There are different variants of OCT, all of them typically use Michelson interferometers [182]. Full-field OCT utilizes a Michelson interferometer with microscope lenses placed in both arms [13,54].…”

Section: Optical Coherence Tomographymentioning

confidence: 99%

Digital Volume Correlation: Review of Progress and Challenges

et al. 2018

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3D imaging has become popular for analyzing material microstructures. When time lapse series of 3D pictures are acquired during a single experiment, it is possible to measure displacement fields via digital volume correlation (DVC), thereby leading to 4D results. Such ForewordThe present paper aims at reviewing the major developments in Digital Volume Correlation (DVC) over the past ten years. It follows the first review on DVC that was published in 2008 by its pioneer [11]. In the latter, the interested reader will find all the general principles associated with what is now called local DVC. They will not be recalled hereafter. In such approaches the region of interest is subdivided into small subvolumes that are independently registered. In addition to its wider use with local approaches, DVC has been extended to global approaches in which the displacement field is defined in a dense way over the region of interest. Kinematic bases using finite element discretizations have been selected. To further add mechanical content, elastic regularization has been introduced. Last, integrated approaches use kinematic fields that are constructed from finite element simulations with chosen constitutive equations. The material parameters (and/or boundary conditions) then become the quantities of interest.These various implementations assume different degrees of integration of mechanical knowledge about the analyzed experiment. First and foremost, DVC can be considered as a stand-alone technique, which has seen its field of applications grow over the last ten years. In this case the measured displacement fields and post-processed strain fields are reported. With the introduction of finite element based DVC, the measured displacement field is continuous. It is also a standalone technique. However, given the fact that it shares common kinematic bases with numerical simulations, it can be easily combined with the latter. One route is to require local satisfaction of equilibrium via mechanical regularization. Another route is to fully merge DVC analyses and numerical simulations via integrated approaches. Different examples will illustrate how these various integration steps can be tailored and what are the current challenges associated with various approaches.

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Section: Optical Coherence Tomographymentioning

confidence: 99%

Digital Volume Correlation: Review of Progress and Challenges

et al. 2018

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“…It has better resolution than ultrasound and achieves deeper penetration than confocal microscopy, and it can provide distinctive morphological information over larger tissue regions than nonlinear optical microscopy. [82][83][84] Thus, OCT has been evaluated for the identification of characteristic architectural changes that correlate with the histological phases of cutaneous wound healing. 85,86 OCT is a low coherence light interferencebased technique.…”

Section: Vascular Mapping and Perfusion Measurements With Optical Cohmentioning

confidence: 99%

Review of near-infrared methods for wound assessment

Sowa

Kuo²,

et al. 2016

J. Biomed. Opt

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Vous avez des questions? Nous pouvons vous aider. Pour communiquer directement avec un auteur, consultez la première page de la revue dans laquelle son article a été publié afin de trouver ses coordonnées. Si vous n'arrivez pas à les repérer, communiquez avec nous à PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. Questions? Contact the NRC Publications Archive team atPublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. If you wish to email the authors directly, please see the first page of the publication for their contact information. NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. NRC Publications Record / Notice d'Archives des publications de CNRC:http://nparc.cisti-icist.nrc-cnrc.gc.ca/eng/view/object/?id=f622d2fd-d6fd-477b-9502-e09dd5a4b2d2 http://nparc.cisti-icist.nrc-cnrc.gc.ca/fra/voir/objet/?id=f622d2fd-d6fd-477b-9502-e09dd5a4b2d2Review of near-infrared methods for wound assessment Abstract. Wound management is a challenging and costly problem that is growing in importance as people are living longer. Instrumental methods are increasingly being relied upon to provide objective measures of wound assessment to help guide management. Technologies that employ near-infrared (NIR) light form a prominent contingent among the existing and emerging technologies. We review some of these technologies. Some are already established, such as indocyanine green fluorescence angiography, while we also speculate on others that have the potential to be clinically relevant to wound monitoring and assessment. These various NIR-based technologies address clinical wound management needs along the entire healing trajectory of a wound.

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“…Based on a conventional TD-OCT, the MR-OCT signal at the output of an interferometer can be deduced. The detected signal signal I d (k)for TD-OCT [24] is stated in Eq. (2).…”

Section: Dermascope Integrated Mr-oct Systemmentioning

confidence: 99%

Dermascope guided multiple reference optical coherence tomography

Dsouza¹,

Subhash²,

Neuhaus³

et al. 2014

Biomed. Opt. Express

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Abstract:In this paper, we report the feasibility of integrating a novel low cost optical coherence tomography (OCT) system with a dermascope for point-of-care applications. The proposed OCT system is based on an enhanced time-domain optical coherence tomographic system, called multiple reference OCT (MR-OCT), which uses a single miniature voice coil actuator and a partial mirror for extending the axial scan range. The system can simultaneously register both the superficial dermascope image and the depth-resolved OCT sub-surface information by an interactive beam steering method. A practitioner is able to obtain the depth resolved information of the point of interest by simply using the mouse cursor. The proposed approach of combining a dermascope with a low cost OCT provides a unique powerful optical imaging modality for a range of dermatological applications. Hand-held dermascopic OCT devices would also enable point of care and remote health monitoring.

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Optical coherence tomography: fundamental principles, instrumental designs and biomedical applications

Cited by 162 publications

References 103 publications

Digital Volume Correlation: Review of Progress and Challenges

Digital Volume Correlation: Review of Progress and Challenges

Review of near-infrared methods for wound assessment

Dermascope guided multiple reference optical coherence tomography

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