Currently, due to the development of this technology and its wide use, new oct findings have been reported in the literature. Spectral domain optical coherence tomography in macular. Beginning with an overview of oct, the book provides a step by step approach to image capture, analysis and interpretation. Guide to interpreting spectral domain optical coherence. Spectral domain optical coherence tomography for glaucoma an. It enhances the wide potential of 2doct and is more precise with less interpolation in the interpretation of results. Optical coherence tomography of ocular diseases, third edition. Jan 17, 2014 with handbook of retinal oct, you can master the latest imaging methods used to evaluate retinal disease, uveitis, and optic nerve disorders. Sdoct, sometimes called fourierdomain or highdefinition oct, is faster, more detailed and more accurate than time domain oct. Spectraldomain optical coherence tomography sdoct is a noncontact and noninvasive imaging technology offering threedimensional 3d, objective, and.
This manual features detailed schematic illustrations as well as actual scans, and is a stepbystep guide for interpreting images acquired by spectral domain oct. Basic oct interpretation of normal macular morphology. The book beautifully correlates oct with other imaging findings, thus. A new generation spectral domain optical coherence tomography sdoct technology has now been developed, representing a quantum leap in resolution and speed, achieving in vivo optical biopsy. Landry, cra octc overview optical coherence tomography, a clinical atlas of retinal images is a richly illustrated and comprehensive guide to identifying anatomy and pathology of retinal disease as illustrated on oct optical coherence tomography. Viewers are given an overview of scanning protocols on various sd oct systems as lecturers present an organized. A novel integrated spectral domain opticalcoherencetomography sd oct and laserablation therapy system for softbiologicaltissue resection is proposed. This is part of the spectral domain oct interpretation for the general ophthalmologist series, which focuses on use of sdoct in patients with glaucoma and retinal disease. Spectraldomain oct sdoct or fourierdomain oct refers to fourier transformation of the optical spectrum of the lowcoherence interferometer. The first step in interpreting optical coherence tomography oct images is understanding the layers of the retina as observed in a normal retina, or a retina without macular pathology. Normative data for retinallayer thickness maps generated by spectral domain oct in a white population author links open overlay panel alessandro invernizzi md 1 2 marco pellegrini md 1 alessandra acquistapace md 1 eleonora benatti md 3 stefano erba md 1 mariano cozzi bsc 1 mario cigada md 1 francesco viola md 3 mark gillies mbbs, phd 2. Normative data for retinallayer thickness maps generated by spectraldomain oct in a white population author links open overlay panel alessandro invernizzi md 1 2 marco pellegrini md 1 alessandra acquistapace md 1 eleonora benatti md 3 stefano erba md 1 mariano cozzi bsc 1 mario cigada md 1 francesco viola md 3 mark gillies mbbs, phd 2. Second, none of the figures have identifiers arrows, and the like to identify the features being described. Spectralis oct the modular imaging platform heidelberg.
Purchase spectraldomain optical coherence tomography imaging of the eye. This book guides ophthalmologists through the interpretation of optical coherence tomographyoct images. It is used for medical imaging and industrial nondestructive testing ndt. Interpretation and terminology of oct for retina christopher mody clinical programme manager heidelberg engineering ltd 2. Utilizing oct for glaucoma diagnosis and management. Interpretation of oct differentiate between inner and outer retinal disease as first step outer retina disease of the photoreceptors. The spectralis oct imaging platform combines scanning laser fundus imaging with simultaneously acquired oct as an expandable platform, it can be upgraded with additional scanning laser fundus imaging modalities, such as bluepeak autofluorescence and multicolor, as well as advanced modules such as oct2 and the glaucoma module premium edition. Spectral domain oct sdoct increases axial resolution 2 to 3fold and scan speed 60 to 110fold vs time domain oct tdoct. Guide to interpreting spectral domain optical coherence tomography.
Spectral domain optical coherence tomography sd oct is the second generation of optical coherence tomography. Understanding the types of artifacts commonly seen in the imaging of patients being evaluated for glaucoma will help physicians better implement these data in the care of patients. Cirrus hdoct shortterm repeatability of clinical retinal nerve fiber layer measurements. Spectral domain optical coherence tomography sdoct is. Spectral domain optical coherence tomography sdoct is a noncontact and noninvasive imaging technology offering threedimensional 3d, objective, and quantitative assessment of optic nerve head. Spectral domain optical coherence tomography sdoct is a relatively new imaging technology that is. Complete resection of diseased lesions reduces the recurrence of cancer, making it critical for surgical treatment. Topcon 2000 machine along with its upgraded software landed on our doorstep.
Sdoct enables novel scanning, denser sampling, and 3dimensional imaging. This is the conclusion of the spectral domain oct interpretation for the general ophthalmologist series, which focuses on use of sdoct in patients with glaucoma and retinal disease. First, the authors purport to take a systematic approach to sdoct scan interpretation. It enhances the wide potential of 2d oct and is more precise with less interpolation in the interpretation of results. To evaluate macular thickness, agreement, and intraclass repeatability in three optical coherence tomography oct devices. This open access book provides a comprehensive overview of the application of the. The introduction of spectraldomain oct in the mid2000s and the later. Spectral domain optical coherence tomography for glaucoma. Oct spectral is done in time domain as well as in frequency domain. Sd oct enables novel scanning, denser sampling, and 3dimensional imaging. Spectraldomain oct measurements in alzheimers disease. Spectralis oct the ophthalmic imaging platform heidelberg.
Spectral domain optical coherence tomography sd oct is a common useful noninvasive imaging instrument which is used for the diagnosis and followup of macular disorders. The new spectral domain sd oct devices include a spectrometer in the receiver that analyzes the spectrum of reflected light on the retina and transforms it into information about the depth of the structures according to the fourier principle. Optical coherence tomography of ocular diseases, third edition is written with the clinician in mind. It gives information on technical and clinical possibilities in the study of glaucoma and on threedimensional images. Spectral domain oct sdoct instruments provide ophthalmologists with a significannt amount of new information. A novel integration of spectraldomain opticalcoherence. Retinal physician appropriate interpretation of oct imaging. The fda approved the first spectral domain optical coherence tomography sdoct system in 2006,1 and four others soon followed. Spectral domain optical coherence tomography in the diagnosis. This completely revised and updated third edition of optical coherence tomography of ocular diseases reflects the quickly advancing technology of spectral domain optical coherence tomography sdoct. The spectral domain optical coherence tomography oct gave us so much new facts about retinal disease that we wonder how we ever practiced as vitreoretinal consultants all these years. Comparison of time domain and spectral domain optical.
General principles for obtaining and interpreting spectral domain oct images page 9 chapter 3 interpretation of the pathological crosssectional oct page chapter 4 visualizing ocular structures inthree dimensions page 37 chapter 5 retinaltopographywith spectral domain oct page 51 chapter 6 sdoct for the study and management of glaucoma page. Optical coherence tomography, and began raving about its wonderful potential and its many uses, comes an enhanced and more precise technology called spectral domain oct. Spectral domain oct recently, we have seen the emergence of a new technology called fourier domain or spectral. This book aims to build concepts and create a solid foundation in the field of optical coherence tomography oct for the general ophthalmologists as well as for. Includes the latest highresolution spectral domain oct technology and new insights into oct angiography technology to ensure you have the most uptodate and highest quality examples available. Importance spectral domain optical coherence tomography sd oct has an integral role in the diagnosis and treatment of glaucoma. The interpretation of oct image is based on analysing tissue reflectivity. Optical coherence tomography oct is a rapidly evolving, robust technology that has profoundly changed the practice of ophthalmology. New landmarks, signs, and findings in optical coherence. This completely revised and updated third edition of optical coherence tomography of ocular diseases reflects the quickly advancing technology of spectral domain optical coherence tomography sd oct. Pdf quality assessment for spectral domain optical.
In the past year, two more devices reached the market, for a total of seven sdoct options. We use a logical method for interpreting oct images. With time domain oct, the mirror moves repeatedly at dif. The second edition of spectral domain oct is a practical guide to the investigation and diagnosis of retinal disease using the topcon machine. Optical coherence tomography a clinical atlas of retinal images by darrin a. Artifacts in spectraldomain optical coherence tomography. Normative data for retinallayer thickness maps generated by. The first phase of analysis subdivides each image into its smallest components. Representations of a time domain and b spectrometerbased spectral domain optical coherence tomography sdoct systems. May 30, 2018 representations of a time domain and b spectrometerbased spectral domain optical coherence tomography sdoct systems. Therefore time is the major limitation of this technique. The image below is an enlargement of a cross sectional image of a normal retina obtained from a spectral domain oct. This is part of the spectral domain oct interpretation for the general ophthalmologist series, which focuses on use of sdoct in patients with. Time domain analysis is a method that can be used to analyze oct spectral images.
Jan 01, 2014 oct is an interferometric imaging technique that generates crosssectional images by mapping the depthwise reflections of lowcoherence laser light from different kinds of tissue. Oct is an interferometric imaging technique that generates crosssectional images by mapping the depthwise reflections of lowcoherence laser light from different kinds of tissue. A simple measurement of coherence at a given point and a given depth is called an ascan. Spectral domain oct sd oct increases axial resolution 2 to 3fold and scan speed 60 to 110fold vs time domain oct td oct. Importance spectraldomain optical coherence tomography sdoct has an integral role in the diagnosis and treatment of glaucoma. Guide to interpreting spectral domain optical coherence tomo. This is part of the spectral domain oct interpretation for the general ophthalmologist series, which focuses on use of sd oct in patients with glaucoma and retinal disease. Oct, multiple laser fundus imaging modalities, widefield and ultrawidefield modules, and scanning laser angiography. Acceptable screening methods include spectraldomain oct, fundus autofluorescence, and multifocal erg. However, precisely resecting residual tumors is a challenge during operation. No part of this book may be reproduced or transmitted in any form or by any means, electronic or.
It is quite intuitive, but prior to discussing the aspects of the retinal architecture seen in oct, the physical foundations of the obtained images should be explained. Optical coherence tomography oct is a novel, noninvasive, micrometerscalesolution tomography, which use coherent light to obtain crosssectional images of specific samples, such as biological tissue. Beginning with an overview of oct, the book provides a step by step approach to image capture, analysis and. Latest oct devices fourier domain detection spectral domain sd oct 2006 70,000 a scanssec. Optical coherence tomography basic explanation duration. Spectraldomain optical coherence tomography imaging of the eye. Pdf spectraldomain optical coherence tomography for. Ideal at any stage of your career, this easytouse, clinically oriented handbook provides a quick, templated, and portable guide for the interpretation of optical coherence tomography scans. Optical coherence tomography casebased neuroophthalmology. Interpretation of oct american academy of ophthalmology. May 01, 2015 with spectral domain oct, however, the sensitivity is not constant throughout the image. General principles for obtaining and interpreting spectral domain oct images page 9 chapter 3 interpretation of the pathological crosssectional oct page chapter 4 visualizing ocular structures inthree dimensions page 37 chapter 5 retinaltopographywith spectral domain oct page 51 chapter 6 sd oct for the study and management of glaucoma page. Viewers are given an overview of scanning protocols on various sdoct systems as lecturers present an organized method for analysis of images and identification of pathology.
The texts primary objective is to illustrate the appearance of the eye in health and disease, comparing conventional clinical technologies using spectral domain oct imaging. This book guides ophthalmologists through the interpretation of optical coherence tomography oct images. Provides key feature points for each disorder giving you the needtoknow oct essentials for quick comprehension and rapid reference. Derrick thorborrow explains how the spectral domain oct machine works and why it is an important part of your overall eye health assessment. Spectral domain oct sd oct or fourier domain oct refers to fourier transformation of the optical spectrum of the lowcoherence interferometer.
Optical coherence tomography oct is an imaging technique that uses lowcoherence light to capture micrometer resolution, two and threedimensional images from within optical scattering media e. Time domain is a method applied in analyzing signals or data, oct spectral, or optical coherence tomography spectral, is an advanced 3 dimensional imaging technique. However, there is no labelled figure showing the layers of the normal retina and choroid. As the tissue of interest moves further from the point of maximum sensitivity called the zero delay line, the quality of the image can decrease, and more noise can appear. Jun 10, 2010 chapter 1 main oct can produce one bscan every 1. In particular, spectral domain oct sdoct allows visualization of me in unprecedented details, so that lesions can be evaluated in all individual retinal layers including location, extension. Sd oct spectraldomain optical coherence tomography.
The second phase combines these fine details to allow diagnosis and identification of appropriate treatment. Detailed information on the oct imaging and interpretation is provided for the. A novel integrated spectraldomain opticalcoherencetomography sdoct and laserablation therapy system for softbiologicaltissue resection is proposed. Aug 15, 2008 research shows that both time domain and spectral domain oct are reliable for macular thickness measurements. Acceptable screening methods include spectral domain oct, fundus autofluorescence, and multifocal erg. The second phase combines these fine details to arrive at a synthesis. With its improved and enhanced speed of 27,000 a scanssec, improved software algorithms and additional facilities for anterior. Spectral domain optical coherence tomography sdoct is a common useful noninvasive imaging instrument which is used for the diagnosis and followup of macular disorders.
Sensitivity and specificity of timedomain versus spectraldomain optical coherence tomography in diagnosing early to moderate glaucoma. This measurement is used to deduce the thickness of the ocular structures that the light has passed through. The clinical findings by oct in these pathologies are well known. Viewers are given an overview of scanning protocols on various sd oct systems as lecturers present an organized method for analysis of images and identification of pathology. Research shows that both time domain and spectral domain oct are reliable for macular thickness measurements. Latest oct devices fourier domain detection spectral domain sd oct 2006 70,000 a scanssec swept source ss oct research only 250,000 400,000 a scanssec better light sources enhanced depth imaging edi whats coming video oct measure retinal blood flow better software quantify ga, rped, cnvm, csr. The mechanism of toxicity is not well understood, but the primary damage appears to occur to the photoreceptors and as the outer nuclear layer degenerates, there is secondary disruption of the retinal pigment epithelium. With handbook of retinal oct, you can master the latest imaging methods used to evaluate retinal disease, uveitis, and optic nerve disorders. This book is to help optical coherence tomography oct users interpret images that, at the beginning, may look very complex and bewildering. A new generation spectral domain optical coherence tomography sd oct technology has now been developed, representing a quantum leap in resolution and speed, achieving in vivo optical biopsy. First, the authors purport to take a systematic approach to sd oct scan interpretation. The diagnostic function of oct in diabetic maculopathy.
930 385 38 705 833 548 903 1444 1156 854 764 796 227 386 868 911 1188 631 486 238 689 128 84 1209 839 573 1145 58 1088 464 926