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Development Of Integrated Optical Coherence Tomography Ultrasound System For Intravascular Imaging
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Book Synopsis Development of Integrated Optical Coherence Tomography - Ultrasound System for Intravascular Imaging by : Jiechen Yin
Download or read book Development of Integrated Optical Coherence Tomography - Ultrasound System for Intravascular Imaging written by Jiechen Yin and published by . This book was released on 2011 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical coherence tomography (OCT) is a noninvasive, noncontact imaging modality that uses coherent gating to obtain high-resolution cross-sectional images of the microstructure of biological tissues. Recently, OCT has been considered as a promising technique for intravascular imaging, since it provides direct visualization of vessel walls with resolutions of 1-2 orders higher than intravascular ultrasound (IVUS). However, there are two major drawbacks for OCT: limited penetration depth makes it difficult to image the whole depth of atherosclerotic plaques and clearance of blood is required since the presence of blood can seriously attenuate OCT signals. OCT and ultrasound (US) are complementary in the application of intravascular imaging. This research focuses on the development of an integrated OCT-US system for the application of intravascular imaging. By combining the two imaging modalities, the system is capable of offering simultaneous OCT and ultrasound images in real-time, thus allowing for images with both high resolution and a deep imaging depth which will significantly improve diagnostic accuracy in the detection of atherosclerosis. OCT-US probes that combine OCT optical components and US transducers have been developed. Different probe designs have been realized based on different applications; and the latest version of the miniature design aimed at human coronary artery imaging has a maximum outer diameter of only 0.69mm. A rotary joint that combines a fiber optic rotary joint and electrical slip ring has been developed, so that both optical and electrical signals can be transmitted between the stationary and rotary parts of the system. The integrated imaging system provides real-time simultaneous OCT and US data acquisition, processing and image display by using a single two-channel data acquisition board and a home-developed OCT-US program. In vitro human coronary specimen imaging and in vivo animal studies have been performed to demonstrate the feasibility of our OCT-US system in the application of intravascular imaging. Last but not least, a 3-dimensional high speed endoscopic OCT system has been developed for the application of airway imaging. In vivo animal studies of smoke-induced early airway injury were performed using this system. Image processing software has been successfully developed for motion artifact removal, image reconstruction and quantitative analysis of airway thickness.
Book Synopsis Multimodality Imaging by : Qifa Zhou
Download or read book Multimodality Imaging written by Qifa Zhou and published by Springer. This book was released on 2019-10-09 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a state-of-the-art overview of the combined use of imaging modalities to obtain important functional and morphological information on intravascular disease and enhance disease detection. It discusses the integration of intravascular ultrasound (IVUS, intravascular optical coherence tomography (OCT), intravascular photoacoustic imaging (IVPA) and acoustic radiation force optical coherence elastography (ARF-OCE), and introduces the integration of multimodality imaging systems, such as IR and florescence. It includes the latest research advances and numerous imaging photos to offer readers insights into current intravascular applications. It is a valuable resource for students, scientists and physicians wanting to gain a deeper understanding of multimodality imaging tools.
Book Synopsis Optical Coherence Tomography by : Wolfgang Drexler
Download or read book Optical Coherence Tomography written by Wolfgang Drexler and published by Springer Science & Business Media. This book was released on 2008-12-10 with total page 1346 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Diagnostic Ultrasound by : K. Kirk Shung
Download or read book Diagnostic Ultrasound written by K. Kirk Shung and published by CRC Press. This book was released on 2005-09-19 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultrasound imaging is one of the most important and widely used diagnostic tools in modern medicine, second only to the conventional x-ray. Although considered a mature field, research continues for improving the capabilities and finding new uses for ultrasound technology while driving down the cost of newer, more complicated procedures such as int
Book Synopsis Principles of Medical Imaging by : K. Kirk Shung
Download or read book Principles of Medical Imaging written by K. Kirk Shung and published by Academic Press. This book was released on 2012-12-02 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the early 1960's, the field of medical imaging has experienced explosive growth due to the development of three new imaging modalities-radionuclide imaging, ultrasound, and magnetic resonance imaging. Along with X-ray, they are among the most important clinical diagnostic tools in medicine today. Additionally, the digital revolution has played a major role in this growth, with advances in computer and digital technology and in electronics making fast data acquisition and mass data storage possible. This text provides an introduction to the physics and instrumentation of the four most often used medical imaging techniques. Each chapter includes a discussion of recent technological developments and the biological effects of the imaging modality. End-of-chapter problem sets, lists of relevant references, and suggested further reading are presented for each technique. - X-ray imaging, including CT and digital radiography - Radionuclide imaging, including SPECT and PET - Ultrasound imaging - Magnetic resonance imaging
Book Synopsis Bioresorbable Scaffolds by : Yoshinobu Onuma
Download or read book Bioresorbable Scaffolds written by Yoshinobu Onuma and published by CRC Press. This book was released on 2017-10-02 with total page 533 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the coronary bioresorbable scaffold, a new interventional treatment for coronary artery disease, differentiated from a permanent metallic stent. The book provides an overview of the technology including non-clinical studies and clinical evidences in order to help clinicians understand the appropriate application of the technology and the optimal techniques of implantation. It covers the basics of bioresorbable scaffolds; bench test results; preclinical studies; clinical evidences; and tips and tricks of implantation.
Book Synopsis Imaging Tissue Engineered Blood Vessel Mimics with Optical Coherence Tomography by :
Download or read book Imaging Tissue Engineered Blood Vessel Mimics with Optical Coherence Tomography written by and published by . This book was released on 2008 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical coherence tomography (OCT) is a technology that enables 2D cross-sectional images of tissue microstructure. This interferometric technique provides resolutions of approximately 10-20 um with a penetration depth of 1-2 mm in highly scattering tissues. With the use of fiber optics, OCT systems have been developed for intravascular imaging with a demonstrated improvement in both resolution and dynamic range compared to commercial intravascular ultrasound systems. OCT studies of normal, atherosclerotic, and stented arteries indicate the ability of OCT to visualize arterial structures. These results suggest OCT may be a valuable tool for studying luminal structures in tissue engineered constructs. In the present study, new endoscopic OCT systems and analysis techniques were developed to visualize the growth and response of the cellular lining within a tissue engineered blood vessel mimic (BVM). The BVM consists of two primary components. A biocompatible polymeric scaffold is used to form the tubular structure. Human microvessel cells from adipose tissue are sodded on to the inner surface of the scaffold. These constructs are then developed and imaged within a sterile bioreactor. Three specific aims were defined for the present study. First, an OCT longitudinal scanning endoscope was developed. With this endoscope, a study of 16 BVMs was performed comparing images from OCT and corresponding histological sections. The study demonstrated that endoscopic imaging did not visually damage the mimic cellular lining. OCT images showed excellent correlation with corresponding histologicalsections. Second, a concentric three element endoscope was developed to provide radial cross-sections of the BVM. OCT images using this endoscope monitored lining development on three types of polymeric scaffolds. In the third specific aim, automated algorithms were developedto assess the percent cellular coverage of a stent using volumetric OCT images. The results of the present study suggest that OCT endoscopic systems may be a valuable tool for assessing and optimizing the development of tissue engineered constructs. Conversely, the BVMs modeled the arterial response to deployed stents allowing the development of automated OCT analysis software. These results suggest that blood vessel mimics may be used to advance OCT technology and techniques.
Book Synopsis Optical Coherence Tomography by : Mark E. Brezinski
Download or read book Optical Coherence Tomography written by Mark E. Brezinski and published by Elsevier. This book was released on 2006-08-25 with total page 645 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical Coherence Tomography gives a broad treatment of the subject which will include 1)the optics, science, and physics needed to understand the technology 2) a description of applications with a critical look at how the technology will successfully address actual clinical need, and 3) a discussion of delivery of OCT to the patient, FDA approval and comparisons with available competing technologies. The required mathematical rigor will be present where needed but be presented in such a way that it will not prevent non-scientists and non-engineers from gaining a basic understanding of OCT and the applications as well as the issues of bringing the technology to the market. - Optical Coherence Tomography is a new medical high-resolution imaging technology which offers distinct advantages over current medical imaging technologies and is attracting a large number of researchers. - Provides non-scientists and non-engineers basic understanding of Optical Coherence Tomography applications and issues.
Book Synopsis Cardiovascular OCT Imaging by : Ik-Kyung Jang
Download or read book Cardiovascular OCT Imaging written by Ik-Kyung Jang and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This heavily revised second edition comprehensively reviews the use of optical coherence tomography (OCT) in cardiovascular practice. It provides detailed guidance on how to properly interpret OCT images and successfully utilise it in daily clinical practice Chapters cover the development and physics associated with OCT, relevant interpretation skills, OCT imaging artifacts, plaque erosion, bioabsorbable stent, the detection of vulnerable plaque, and the use of OCT imaging in unison with other modalities such as phase contrast imaging (PCI). Areas of potential future development are also covered Cardiovascular OCT Imaging enables interventional cardiologists and cardiologists to quickly become both familiar and develop a detailed understanding of this technology to improve patient care and treatment outcome. It is a valuable reference for all practising and trainee medical professionals in cardiology, and in particular those who specialize in interventional cardiology.
Book Synopsis Optical Coherence Tomography of Ocular Diseases by : Joel S. Schuman
Download or read book Optical Coherence Tomography of Ocular Diseases written by Joel S. Schuman and published by CRC Press. This book was released on 2024-06-01 with total page 1093 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most comprehensive text and definitive guide for nearly 30 years about optical coherence tomography (OCT) imaging in ophthalmology, Optical Coherence Tomography of Ocular Diseases, Fourth Edition covers a range of subjects, from principles and operation techniques to clinical interpretation and the latest innovations in OCT. Written by the pioneers of OCT technologies and the world-renowned OCT researchers Drs. Joel S. Schuman, James G. Fujimoto, Jay S. Duker, Hiroshi Ishikawa, and Gadi Wollstein, Optical Coherence Tomography of Ocular Diseases, Fourth Edition is an essential text for imaging technology. OCT now occupies a dominant role as a diagnostic tool for retinal conditions and glaucoma. At the same time, the technology continues to show potential for emerging clinical and research applications across all the ophthalmological subspecialties. To reflect these rapid advances, this new edition of Optical Coherence Tomography of Ocular Diseases features a complete and thorough revision of the existing text as well as the addition of cutting-edge content to bring this classic resource completely up to date. New content in the Fourth Edition includes: • OCT angiography • Swept-source OCT • OCT in multimodal imaging • Clinical utility of OCT in glaucoma prediction and progression detection • OCT for neuro-ophthalmology Optical Coherence Tomography of Ocular Diseases, Fourth Edition is the one and only book needed by practitioners who use OCT for clinical eye care.
Book Synopsis Hybrid Imaging in Cardiovascular Medicine by : Yi-Hwa Liu
Download or read book Hybrid Imaging in Cardiovascular Medicine written by Yi-Hwa Liu and published by CRC Press. This book was released on 2017-10-31 with total page 808 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive book focuses on multimodality imaging technology, including overviews of the instruments and methods followed by practical case studies that highlight use in the detection and treatment of cardiovascular diseases. Chapters cover PET-CT, SPECT-CT, SPECT-MRI, PET-MRI, PET-optical imaging, SPECT-optical imaging, photoacoustic Imaging, and hybrid intravascular imaging. It also addresses the important issues of multimodality imaging probes and image quantification. Readers from radiology and cardiology as well as medical imaging and biomedical engineering will learn essentials of the field. They will be shown how the field has advanced quantitative analysis of molecularly targeted imaging through improvements in the reliability and reproducibility of imaging data. Moreover, they will be presented with quantification algorithms and case illustrations, including coverage of such topics such as multimodality image fusion and kinetic modeling. Yi-Hwa Liu, PhD is Senior Research Scientist in Cardiovascular Medicine at Yale University School of Medicine and Technical Director of Nuclear Cardiology at Yale New Haven Hospital. He is also an Associate Professor (Adjunct) of Biomedical Imaging and Radiological Sciences at National Yang-Ming University, Taipei, Taiwan, and Professor (Adjunct) of Biomedical Engineering at Chung Yuan Christian University, Taoyuan, Taiwan. He is an elected senior member of Institute of Electrical and Electronic Engineers (IEEE) and a full member of Sigma Xi of The Scientific Research Society of North America. Albert J. Sinusas, M.D., FACC, FAHA is Professor of Medicine (Section of Cardiovascular Medicine) and Radiology and Biomedical Imaging, at Yale University School of Medicine, and Director of the Yale Translational Research Imaging Center (Y-TRIC), and Director of Advanced Cardiovascular Imaging at Yale New Haven Hospital. He is a recipient of the Society of Nuclear Medicine’s Hermann Blumgart Award.
Book Synopsis Precision Microfabrication of Optical Probes for Intravascular Diagnostics by : Radhika Kallidil Poduval
Download or read book Precision Microfabrication of Optical Probes for Intravascular Diagnostics written by Radhika Kallidil Poduval and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis details a collection of design, optimisation, fabrication and characterisation work to form fiber-optic probes and optical phantom devices for intravascular diagnostics in minimally invasive surgery (MIS). Optically generated ultrasound is an emerging technique to create broadband high frequency ultrasound via the photoacoustic effect. In the first segment of this thesis, the development of a novel miniature fiber-optic ultrasound transmitter is detailed. A morphologically controlled coating was formed at the endface of a multimode optical fiber by controlled electrospinning of a carbon-nanotube composite. Efficient optical ultrasound generation was realised, with signal amplitude, bandwidth and device form factor suited to clinical intravascular imaging applications. Thereafter, precision microfabricated extrinsic fiber-optic interferometric sensors for MIS intravascular pressure and temperature evaluation were developed. In a first demonstration, two-photon polymerisation (TPP) was used to form a high resolution freeform microscale extrinsic sensing element in a fiber-optic interferometric sensor, comprising of optical lensing elements, a confined gas cavity and a distal deformable membrane. These devices were interrogated using low-coherence interferometry and their performance evaluated in simulated intravascular conditions. Pressure and temperature sensitivities in the biomedical range of interest were observed with these devices. Characterisation and clinical validation of precision microfabricatied probes possessing unconventional sensing geometries used in MIS require complex imaging phantoms. In the final project, high resolution mesoscale intravascular optical coherence tomography (IVOCT) phantoms were created using TPP and micro-injection of tissue-mimicking materials to simulate healthy and diseased tissue morphology. Sub-resolution IV-OCT phantoms with anatomic features were realised and verified using a clinical IV-OCT system. The devices and techniques developed in this thesis pave the way for precision microfabrication of fiber-optic probes in intravascular ultrasound imaging, multi-parameter physiological sensing, and the associated 3D mesoscale imaging phantoms. These devices and fabrication paradigms lend themselves well to prototyping and design optimisation of miniature medical devices, with potential for clinical translation in the near future.
Book Synopsis Intravascular Ultrasound by : Simone Balocco
Download or read book Intravascular Ultrasound written by Simone Balocco and published by Elsevier. This book was released on 2020-06-06 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intravascular Ultrasound: From Acquisition to Advanced Quantitative Analysis covers topics of the whole imaging pipeline, ranging from the definition of the clinical problem and image acquisition systems to image processing and analysis, including the assisted clinical-decision making procedures and treatment planning (stent deployment and follow up). Atherosclerosis, a disease of the vessel wall that produces vessel narrowing and obstruction, is the major cause of cardiovascular diseases, such as heart attack or stroke. This book covers all aspects of this imaging tool that allows for the visualization of internal vessel structures and the quantification and characterization of coronary plaque. Provides an introduction to the clinical workflow and current challenges in endovascular interventions Presents a review of the state-of-the-art methodologies in IVUS imaging and their applications Includes a rich analysis of the current and potential future connections between the academic, clinical and industrial fields
Book Synopsis Interventional Cardiology by : George D. Dangas
Download or read book Interventional Cardiology written by George D. Dangas and published by John Wiley & Sons. This book was released on 2016-11-28 with total page 2479 pages. Available in PDF, EPUB and Kindle. Book excerpt: Expert guidance from internationally recognized authorities, who provide clear and current updates on all aspects of interventional cardiology. This new edition; Contains a radically expanded chapter contents list presented in four clear sections; coronary interventions, interventional pharmacology, structural heart interventions, and endovascular therapy Includes 46 new chapters, including the latest advances in bioresorbable coronary stents, advanced transcatheter aortic valve replacement, MitraClip, new transcatheter mitral valve interventions, and more Chapters are templated for rapid referral, beginning with pathophysiological background and relevant pathology, moving to mechanisms of treatment, device description, procedural techniques, follow-up care, and ending with risks, contraindications and complications Multiple choice questions at the end of each chapter for self-assessment, a total of more than 400 MCQs in the book Features 19 procedural videos, hosted on a companion website
Book Synopsis Optical Coherence Tomography in Cardiovascular Research by : Evelyn Regar
Download or read book Optical Coherence Tomography in Cardiovascular Research written by Evelyn Regar and published by CRC Press. This book was released on 2007-03-06 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Given that for centuries, the standard tool to understand diseases in tissues was the microscope and that its major limitation was that only excised tissue could be used, recent technology now permits the examination of diseased tissue in vivo. Optical coherence tomography (OCT) has promising potential when applied to coronary artery disease. OCT h
Book Synopsis LED-Based Photoacoustic Imaging by : Mithun Kuniyil Ajith Singh
Download or read book LED-Based Photoacoustic Imaging written by Mithun Kuniyil Ajith Singh and published by Springer Nature. This book was released on 2020-04-07 with total page 393 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights the use of LEDs in biomedical photoacoustic imaging. In chapters written by key opinion leaders in the field, it covers a broad range of topics, including fundamentals, principles, instrumentation, image reconstruction and data/image processing methods, preclinical and clinical applications of LED-based photoacoustic imaging. Apart from preclinical imaging studies and early clinical pilot studies using LED-based photoacoustics, the book includes a chapter exploring the opportunities and challenges of clinical translation from an industry perspective. Given its scope, the book will appeal to scientists and engineers in academia and industry, as well as medical experts interested in the clinical applications of photoacoustic imaging.
Book Synopsis Computing and Visualization for Intravascular Imaging and Computer-Assisted Stenting by : Simone Balocco
Download or read book Computing and Visualization for Intravascular Imaging and Computer-Assisted Stenting written by Simone Balocco and published by Academic Press. This book was released on 2016-12-12 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computing and Visualization for Intravascular Imaging and Computer-Assisted Stenting presents imaging, treatment, and computed assisted technological techniques for diagnostic and intraoperative vascular imaging and stenting. These techniques offer increasingly useful information on vascular anatomy and function, and are poised to have a dramatic impact on the diagnosis, analysis, modeling, and treatment of vascular diseases. After setting out the technical and clinical challenges of vascular imaging and stenting, the book gives a concise overview of the basics before presenting state-of-the-art methods for solving these challenges. Readers will learn about the main challenges in endovascular procedures, along with new applications of intravascular imaging and the latest advances in computer assisted stenting. Brings together scientific researchers, medical experts, and industry partners working in different anatomical regions Presents an introduction to the clinical workflow and current challenges in endovascular Interventions Provides a review of the state-of-the-art methodologies in endovascular imaging and their applications Poses outstanding questions and discusses future research
