Ophthalmological Imaging And Applications

Author : E. Y. K. Ng,U. Rajendra Acharya,Rangaraj M. Rangayyan,Jasjit S. Suri
Publisher : CRC Press
Page : 532 pages
File Size : 47,8 Mb
Release : 2014-05-05
Category : Technology & Engineering
ISBN : 9781466559134

Get Book

Ophthalmological Imaging and Applications by E. Y. K. Ng,U. Rajendra Acharya,Rangaraj M. Rangayyan,Jasjit S. Suri Pdf

Edited by and featuring contributions from world-class researchers, Ophthalmological Imaging and Applications offers a unified work of the latest human eye imaging and modeling techniques that have been proposed and applied to the diagnosis of ophthalmologic problems, including inflammation, cataracts, diabetic retinopathy, and glaucoma. With a focus on theory, basic principles, and results derived from research, the book: Explores various morphological, textural, higher-order spectral, and wavelet transformation techniques used to extract salient features from images of the human eye Examines 2D and 3D finite element and boundary element models of the human eye developed to simulate thermal steady-state conditions Addresses the difficult task of benchmarking the validity of human eye imaging techniques and computer-simulated results with experimental measurements Intended to be a companion to Image Analysis and Modeling in Ophthalmology, this volume covers several aspects of multimodal ophthalmological imaging and applications, presenting information in an accessible manner to appeal to a wide audience of students, researchers, and practitioners. Ophthalmological Imaging and Applications considers promising simulations that pave the way for new possibilities in computational methods for eye health care.

Author : Josef F. Bille
Publisher : Springer
Page : 407 pages
File Size : 48,7 Mb
Release : 2019-08-13
Category : Medical
ISBN : 9783030166380

Get Book

High Resolution Imaging in Microscopy and Ophthalmology by Josef F. Bille Pdf

This open access book provides a comprehensive overview of the application of the newest laser and microscope/ophthalmoscope technology in the field of high resolution imaging in microscopy and ophthalmology. Starting by describing High-Resolution 3D Light Microscopy with STED and RESOLFT, the book goes on to cover retinal and anterior segment imaging and image-guided treatment and also discusses the development of adaptive optics in vision science and ophthalmology. Using an interdisciplinary approach, the reader will learn about the latest developments and most up to date technology in the field and how these translate to a medical setting. High Resolution Imaging in Microscopy and Ophthalmology – New Frontiers in Biomedical Optics has been written by leading experts in the field and offers insights on engineering, biology, and medicine, thus being a valuable addition for scientists, engineers, and clinicians with technical and medical interest who would like to understand the equipment, the applications and the medical/biological background. Lastly, this book is dedicated to the memory of Dr. Gerhard Zinser, co-founder of Heidelberg Engineering GmbH, a scientist, a husband, a brother, a colleague, and a friend.

Author : Daniel Gologorsky,Richard B. Rosen
Publisher : Slack
Page : 150 pages
File Size : 55,5 Mb
Release : 2020
Category : Electronic
ISBN : 1630915998

Get Book

Principles of Ocular Imaging by Daniel Gologorsky,Richard B. Rosen Pdf

A comprehensive guide for the eye specialist, Principles of Ocular Imaging presents essential information on imaging modalities for ophthalmologists, residents, and fellows. Ophthalmology and imaging are inextricably intertwined, and practicing eye care professionals need a single definitive source on multiple imaging modalities to reference in clinical practice. Together with their contributors, Drs. Gologorsky and Rosen provide concise but thorough information on the technology and clinical application of 22 imaging modalities unique to ophthalmology, with illustrations and photos throughout that demonstrate how to apply each imaging principle in clinical practice. Principles of Ocular Imaging is divided into the following subspecialties for easy reference in busy clinical environments: Oculoplastics: external photography, ptosis visual fields, slit lamp photography, and orbital ultrasonography Cornea and refractive: corneal topography, confocal microscopy, anterior segment optical coherence tomography (AS-OCT), ultrasound biomicroscopy (UBM), biometry for intraocular lens (IOL) calculations Glaucoma: visual fields, optical coherence tomography (OCT) in glaucoma Retina: fundus photography, fluorescein angiography (FA), indocyanine green (ICG) angiography, fundus autofluorescence (FAF), OCT in retina, optical coherence tomography angiography (OCTA), adaptive optics (AO), microperimetry, retinal ultrasonography Neuro-Ophthalmology: electrophysiology of vision and computed tomography (CT) & magnetic resonance imaging (MRI) A practical, illustrative guide to ophthalmic imaging, Principles of Ocular Imaging is an indispensable addition to the practicing ophthalmologist's professional library.

Author : Eddie Y. K. Ng,U. Rajendra Acharya,Jasjit S. Suri,Aurelio Campilho
Publisher : CRC Press
Page : 402 pages
File Size : 51,9 Mb
Release : 2014-02-11
Category : Medical
ISBN : 9781466559387

Get Book

Image Analysis and Modeling in Ophthalmology by Eddie Y. K. Ng,U. Rajendra Acharya,Jasjit S. Suri,Aurelio Campilho Pdf

Digital fundus images can effectively diagnose glaucoma and diabetes retinopathy, while infrared imaging can show changes in the vascular tissues. Likening the eye to the conventional camera, Image Analysis and Modeling in Ophthalmology explores the application of advanced image processing in ocular imaging. This book considers how images can be us

Author : Peng Xiao,Claude Boccara,Kate Grieve,Yali Jia
Publisher : Frontiers Media SA
Page : 222 pages
File Size : 41,7 Mb
Release : 2022-12-06
Category : Medical
ISBN : 9782832508923

Get Book

The Development and Clinical Application of Innovative Optical Ophthalmic Imaging Techniques by Peng Xiao,Claude Boccara,Kate Grieve,Yali Jia Pdf

Author : Amar Agarwal,Samuel Boyd,Robert C Drews
Publisher : JP Medical Ltd
Page : 197 pages
File Size : 40,9 Mb
Release : 2011-03-31
Category : Medical
ISBN : 9789962678076

Get Book

Diagnostic and Imaging Techniques in Ophthalmology by Amar Agarwal,Samuel Boyd,Robert C Drews Pdf

Advances made in diagnostic and imaging tech¬niques within the past years have revolutionized the clinical approach to, and the management of many ophthalmic diseases. Wavefront and Optical Coherence Tomography (OCT) have been incorporated as basic tools of refractive surgery, in the assessment of vitreoreti¬nal disorders, optic nerve pathologies, ocular tumors and ocular trauma. This book presents a comprehensive evaluation of current and emerging technologies used for clinical assessment in ophthalmology, as well as an in depth discussion of retinal angiography, both anterior and exterior segments, OCT, VHF ultrasound and other advanced imaging methods and techniques.

Author : Rohit Varma,Benjamin Y. Xu,Grace M. Richter,Alena Reznik
Publisher : Springer Nature
Page : 130 pages
File Size : 53,8 Mb
Release : 2020-07-24
Category : Medical
ISBN : 9783030438470

Get Book

Advances in Ocular Imaging in Glaucoma by Rohit Varma,Benjamin Y. Xu,Grace M. Richter,Alena Reznik Pdf

Serving as a practical guide to the ocular imaging modalities that are currently available to eye care providers for the care of glaucoma patients, this book provides information on advances in ocular imaging and their applications in the diagnosis and management of glaucoma. Each chapter introduces the imaging modality, highlight its strengths and weaknesses for clinical care, and discuss its integration into the clinical examination and decision-making process. The chapters also provide an in-depth description of the interpretation of images from each imaging modality. When appropriate, the chapters will summarize past and ongoing research and propose future research directions and clinical applications. This title will appeal to ophthalmologists and optometrists at all levels, from trainees to experienced clinicians looking to learn new and important information.

Author : F. Bandello,L. Mastropasqua,G. Querques
Publisher : Karger Medical and Scientific Publishers
Page : 146 pages
File Size : 40,5 Mb
Release : 2020-12-07
Category : Medical
ISBN : 9783318066432

Get Book

Clinical Applications of Optical Coherence Tomography Angiography by F. Bandello,L. Mastropasqua,G. Querques Pdf

The recent introduction of optical coherence tomography angiography (OCTA) has remarkably expanded the knowledge of different retinal, chorioretinal, and optic disc disorders. OCTA is nowadays often used as a routine exam in clinical practice, which has significantly modified the approach to patients, granting the opportunity to easily and noninvasively investigate the retinal and choroidal circulation. Major experts in posterior eye imaging share in this publication their experiences, images and ideas using OCTA in various contexts including age-related macular degeneration, diabetic retinopathy and retinal dystrophies, thus providing an in-depth overview of the latest knowledge in this field.

Author : Wolfgang Drexler,James G. Fujimoto
Publisher : Springer Science & Business Media
Page : 1346 pages
File Size : 49,5 Mb
Release : 2008-12-10
Category : Medical
ISBN : 9783540775508

Get Book

Optical Coherence Tomography by Wolfgang Drexler,James G. Fujimoto Pdf

Optical coherence tomography (OCT) is the optical analog of ultrasound imaging and is emerging as a powerful imaging technique that enables non-invasive, in vivo, high resolution, cross-sectional imaging in biological tissue. This book introduces OCT technology and applications not only from an optical and technological viewpoint, but also from biomedical and clinical perspectives. The chapters are written by leading research groups, in a style comprehensible to a broad audience.

Author : E. Y. K. Ng,Jen Hong Tan,U. Rajendra Acharya,Jasjit S. Suri
Publisher : CRC Press
Page : 432 pages
File Size : 41,5 Mb
Release : 2012-06-05
Category : Technology & Engineering
ISBN : 9781439869932

Get Book

Human Eye Imaging and Modeling by E. Y. K. Ng,Jen Hong Tan,U. Rajendra Acharya,Jasjit S. Suri Pdf

Advanced image processing and mathematical modeling techniques are increasingly being used for the early diagnosis of eye diseases. A comprehensive review of the field, Human Eye Imaging and Modeling details the latest advances and analytical techniques in ocular imaging and modeling. The first part of the book looks at imaging of the fundus as well as infrared imaging. It begins by exploring developments in the analysis of fundus images, particularly for the diagnosis of diabetic retinopathy and glaucoma. It also reviews anterior segment imaging and reports on developments in ocular thermography, especially the use of thermal imaging as the basis of tear evaporimetry and dry eye diagnosis. The second part of the book delves into mathematical modeling of the human eye. Coverage includes modeling of the eye during retinal laser surgery, a framework for optical simulation, heat distribution using a 3D web-splines solution, and exposure to laser radiation. The text also examines computer simulation of the human eye based on principles of heat transfer, as well as various bioheat equations to predict interior temperatures based on the surface temperature. Featuring contributions by established experts in eye imaging, this is a valuable reference for medical personnel and researchers who want to know more about state-of-the-art computer-based imaging and detection methods. It presents novel imaging and modeling algorithms that can aid in early diagnosis, with the aim of enriching the lives of people suffering from eye abnormalities.

Author : David Huang,Yali Jia,Bruno Lumbroso,Nadia K. Waheed
Publisher : Kugler Publications
Page : 594 pages
File Size : 55,8 Mb
Release : 2024-01-08
Category : Medical
ISBN : 9789062999439

Get Book

Optical Coherence Tomography Angiography of the Eye by David Huang,Yali Jia,Bruno Lumbroso,Nadia K. Waheed Pdf

Optical coherence tomography angiography (OCTA) has undergone tremendous growth since its first commercial introduction in 2014. Because it provides injection-free, capillary-resolution, 3-dimensional angiography of the retina and choroid, OCTA is likely to overtake fluorescein as the most important angiographic imaging technique in the eye. Nearly all manufacturers of ophthalmic OCT now offer OCTA products. A PubMed search now yields over 5700 articles on OCTA and related terms. Clinical investigators have already found a use for OCTA in almost every category of retinal and optic nerve diseases. This book is meant to bring together all this information so clinicians can have one authoritative text to turn to as we begin to use this new imaging modality that was never taught when we were in formal training. Table of contents Introduction Dedication About the Editors Contributors 1. Optical coherence tomography systems for angiography 2. Optical coherence tomographic angiography algorithms 3. Vascular anatomy of the normal retina and choroid 4. OCTA of the normal anterior eye circulations 5. Artifacts 6. Quantification 7. Artificial intelligence in optical coherence tomographic angiography 8. Terminology: a new standard 9. AngioVue SSADA OCTA on the Optovue SOLIX Spectral-Domain OCT 10. Optical microangiography with AngioPlex® and PLEX® Elite systems 11. Optical coherence tomography angiography imaging on the Topcon Triton and Maestro2 systems 12. NIDEK Mirante OCT angiography 13. OCTA on the Heidelberg spectralis spectral-domain OCT 14. OCTA on the Optopol REVO NX spectral-domain OCT 15. OCTA on the Canon OCT-HS100 and Xephilio OCT-A1 Spectral-Domain OCT 16. Exudative neovascular age-related macular degeneration—Type 1, 2 and 3 neovascularization 17. Retinal angiomatous proliferation—type 3 choroidal neovascularization 18. Short- and long-term follow-up of macular neovascularization response to antiangiogenic treatment 19. Nonexudative neovascular age-related macular degeneration 20. Non-neovascular age-related macular degeneration 21. Polypoidal choroidal vasculopathy 22. Macular telangiectasia 23. Central serous chorioretinopathy 25. Nonproliferative diabetic retinopathy 26. Subclinical neovascular diabetic retinopathy 27. Proliferative diabetic retinopathy 28. Retinal venous occlusion 29. Retinal arterial occlusion 30. Plexus-specific occlusions in retinal vascular diseases 31. Paracentral acute middle maculopathy 32. Inherited retinal degenerations 33. Pathologic myopia 34. Multimodal imaging and the role of optical coherence tomography angiography in retinal vasculitis 35. White spot syndromes 36. Choroidal tumors 37. Radiation retinopathy 38. Open-angle glaucoma 39. Primary angle-closure glaucoma 40. Optic neuritis and multiple sclerosis 41. Alzheimer’s disease 42. Corneal neovascularization 43. Ocular surface and iris tumors

Author : Ahmet Akman,Atilla Bayer,Kouros Nouri-Mahdavi
Publisher : Springer
Page : 361 pages
File Size : 50,8 Mb
Release : 2018-09-17
Category : Medical
ISBN : 9783319949055

Get Book

Optical Coherence Tomography in Glaucoma by Ahmet Akman,Atilla Bayer,Kouros Nouri-Mahdavi Pdf

This book focuses on the practical aspects of Optical Coherence Tomography (OCT) in glaucoma diagnostics offering important theoretical information along with many original cases. OCT is a non-invasive imaging technique that acquires high-resolution images of the ocular structures. It enables clinicians to detect glaucoma in the early stages and efficiently monitor the disease. Optical Coherence Tomography in Glaucoma features updated information on technical applications of OCT in glaucoma, reviews recently published literature and provides clinical cases based on Cirrus and Spectralis OCT platforms. In addition, newer techniques like event and trend analyses for progression, macular ganglion cell analysis, and OCT angiography are discussed. This book will serve as a reference for ophthalmologists and optometrists worldwide with a special interest in OCT imaging providing essential guidance on the application of OCT in glaucoma.

Author : Xinjian Chen,Fei Shi,Haoyu Chen
Publisher : Springer
Page : 385 pages
File Size : 47,7 Mb
Release : 2019-07-05
Category : Science
ISBN : 9789811318252

Get Book

Retinal Optical Coherence Tomography Image Analysis by Xinjian Chen,Fei Shi,Haoyu Chen Pdf

This book introduces the latest optical coherence tomography (OCT) imaging and computerized automatic image analysis techniques, and their applications in the diagnosis and treatment of retinal diseases. Discussing the basic principles and the clinical applications of OCT imaging, OCT image preprocessing, as well as the automatic detection and quantitative analysis of retinal anatomy and pathology, it includes a wealth of clinical OCT images, and state-of-the-art research that applies novel image processing, pattern recognition and machine learning methods to real clinical data. It is a valuable resource for researchers in both medical image processing and ophthalmic imaging.

Author : Rajendra Acharya U,Y. K. Eddie Ng,Jasjit S. Suri
Publisher : Artech House
Page : 378 pages
File Size : 48,5 Mb
Release : 2008
Category : Computers
ISBN : 9781596932098

Get Book

Image Modeling of the Human Eye by Rajendra Acharya U,Y. K. Eddie Ng,Jasjit S. Suri Pdf

This groundbreaking resource gives you full details on state-of-the-art 2D and 3D eye imaging and modeling techniques that are paving the way to breakthrough clinical applications in eye health. ItOCOs the first book to explore in depth a new generation of computational methods that combine image processing, simulation, and statistical discrimination tools in efforts to improve early detection of cataracts, diabetic retinopathy, glaucoma, iridocyclitis, corneal haze, maculopathy, and other visual impairments and conditions."

Author : Xiaolu Zhu,Rangaraj M. Rangayyan,Anna L. Ells
Publisher : Morgan & Claypool Publishers
Page : 108 pages
File Size : 42,8 Mb
Release : 2011
Category : Computers
ISBN : 9781608456314

Get Book

Digital Image Processing for Ophthalmology by Xiaolu Zhu,Rangaraj M. Rangayyan,Anna L. Ells Pdf

Fundus images of the retina are color images of the eye taken by specially designed digital cameras. Ophthalmologists rely on fundus images to diagnose various diseases that affect the eye, such as diabetic retinopathy and retinopathy of prematurity. A crucial preliminary step in the analysis of retinal images is the identification and localization of important anatomical structures, such as the optic nerve head (ONH), the macula, and the major vascular arcades. Identification of the ONH is an important initial step in the detection and analysis of the anatomical structures and pathological features in the retina. Different types of retinal pathology may be detected and analyzed via the application of appropriately designed techniques of digital image processing and pattern recognition. Computer-aided analysis of retinal images has the potential to facilitate quantitative and objective analysis of retinal lesions and abnormalities. Accurate identification and localization of retinal features and lesions could contribute to improved diagnosis, treatment, and management of retinopathy. This book presents an introduction to diagnostic imaging of the retina and an overview of image processing techniques for ophthalmology. In particular, digital image processing algorithms and pattern analysis techniques for the detection of the ONH are described. In fundus images, the ONH usually appears as a bright region, white or yellow in color, and is indicated as the convergent area of the network of blood vessels. Use of the geometrical and intensity characteristics of the ONH, as well as the property that the ONH represents the location of entrance of the blood vessels and the optic nerve into the retina, is demonstrated in developing the methods. The image processing techniques described in the book include morphological filters for preprocessing fundus images, filters for edge detection, the Hough transform for the detection of lines and circles, Gabor filters to detect the blood vessels, and phase portrait analysis for the detection of convergent or node-like patterns. Illustrations of application of the methods to fundus images from two publicly available databases are presented, in terms of locating the center and the boundary of the ONH. Methods for quantitative evaluation of the results of detection of the ONH using measures of overlap and free-response receiver operating characteristics are also described. Table of Contents: Introduction / Computer-aided Analysis of Images of the Retina / Detection of Geometrical Patterns / Datasets and Experimental Setup / Detection of the\\Optic Nerve Head\\Using the Hough Transform / Detection of the\\Optic Nerve Head\\Using Phase Portraits / Concluding Remarks