Download or read book Carotid Atherosclerotic Plaque Ultrasound Assessment written by Fabrizio D'Abate and published by ABC Vascular. This book was released on 2023-05-02 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Practical Guide on the Ultrasound Assessment of Carotid Atherosclerotic Plaques, a must-have pocket guide for medical professionals who want to master vascular ultrasound. This comprehensive eBook, co-authored by renowned vascular experts Cristiana Vitale and Fabrizio D’Abate, provides the most updated consensus on how to classify carotid atherosclerotic plaques using ultrasound. Designed as a practical guide, this eBook unravels the essentials of ultrasound assessment of carotid atherosclerotic plaques, plaque morphology features, and introduces the method to grade carotid arteries stenosis. Perfect for healthcare professionals desiring to master vascular ultrasound, this eBook features: - In-depth insights into the ultrasound assessment of carotid atherosclerotic plaques. - A gallery of ultrasound images illustrating various types of carotid plaques to help you familiarize yourself with both stable and vulnerable carotid atherosclerotic plaques. - A step towards continuous education without the barriers of cost, location, and time. For an even more enriching learning experience, this eBook perfectly complements our ABC Vascular Online Carotid Master Course. The master course further explores the topic with eBooklets and real-life videos, providing step-by-step protocols for ultrasound assessment of the carotid and vertebral arteries. ABC Vascular Ltd, co-founded by Cristiana Vitale and Fabrizio D’Abate, is an accredited e-learning platform committed to providing dynamic learning tools for healthcare professionals interested in vascular ultrasound.
Download or read book Quantitative Ultrasound Imaging Parameters for Evaluation of Carotid Atherosclerotic Plaque written by Catherine Steffel and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stroke is a leading cause of death and disability throughout the world. Clinicians recognize that carotid atherosclerotic plaque can be a contributing cause of stroke; however, clinical methods for characterizing carotid plaque with ultrasound are semi-quantitative, and tools are needed to assess plaque composition in asymptomatic individuals who have not yet suffered a stroke or other cerebrovascular event. To examine carotid plaque composition noninvasively and overcome some of these limitations, researchers have developed standardized quantitative ultrasound (QUS) methods based on brightness-mode (B-mode) images and radiofrequency (RF) echo signals. Our research group has been involved in this effort by developing signal processing approaches and evaluating QUS parameters. Some primary challenges of computing QUS parameters, particularly in vivo, are plaques' small sizes and heterogeneous composition. Algorithms developed in recent years reportedly minimize QUS estimation variance in simulation, phantom studies, and biological tissue. The primary goal of the research presented in this dissertation was to adapt some of these new signal processing approaches to carotid plaque assessment and develop and validate subsequent QUS parameters. As part of this work, we applied an optimum power spectral shift estimation (OPSSE) method to RF echo signal data and computed attenuation coefficient and attenuation-corrected integrated backscatter parameters in plaque in vivo and ex vivo. Then, we compared our results to those from a reference phantom method (for in vivo attenuation coefficient estimation only) and to ground-truth assessments of plaque composition (whole plaque surgical scores, assessments of single representative sections of histopathology, and 3D reconstructions of histopathology whole slide images [for ex vivo only]). Our results demonstrated that the OPSSE method may provide QUS estimates with lower variance, fewer nonphysical estimates, and high spatial resolution. Further, attenuation coefficient and attenuation-corrected integrated backscatter parameters correlated with cholesterol, calcium, thrombus, ulceration, hemorrhage, hemosiderin, and inflammation content in plaque and could discriminate among plaque scores. Together, our results suggest that the applied signal processing approaches and developed QUS parameters may provide information about plaque composition that has not been revealed through other parameters and indices obtained as part of our study. This dissertation contributes to a growing body of QUS research that will guide future development of an accurate and reliable tool for assessing risk of plaque rupture or stroke by plaque echogenicity changes.
Download or read book Multi Modality Atherosclerosis Imaging and Diagnosis written by Luca Saba and published by Springer Science & Business Media. This book was released on 2013-09-13 with total page 423 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stroke is one of the leading causes of death in the world, resulting mostly from the sudden ruptures of atherosclerosis carotid plaques. Understanding why and how plaque develops and ruptures requires a multi-disciplinary approach such as radiology, biomedical engineering, medical physics, software engineering, hardware engineering, pathological and histological imaging. Multi-Modality Atherosclerosis Imaging, Diagnosis and Treatment presents a new dimension of understanding Atherosclerosis in 2D and 3D. This book presents work on plaque stress analysis in order to provide a general framework of computational modeling with atherosclerosis plaques. New algorithms based on 3D and 4D Ultrasound are presented to assess the atherosclerotic disease as well as very recent advances in plaque multimodality image fusion analysis. The goal of Multi-Modality Atherosclerosis Imaging, Diagnosis and Treatment is to fuse information obtained from different 3D medical image modalities, such as 3D US, CT and MRI, providing the medical doctor with some sort of augmented reality information about the atherosclerotic plaque in order to improve the accuracy of the diagnosis. Analysis of the plaque dynamics along the cardiac cycle is also a valuable indicator for plaque instability assessment and therefore for risk stratification. 4D Ultrasound, a sequence of 3D reconstructions of the region of interest along the time, can be used for this dynamic analysis. Multimodality Image Fusion is a very appealing approach because it puts together the best characteristics of each modality, such as, the high temporal resolution of US and the high spatial resolutions of MRI and CT.
Download or read book Ultrasound and Carotid Bifurcation Atherosclerosis written by Andrew Nicolaides and published by Springer Science & Business Media. This book was released on 2011-11-24 with total page 641 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultrasound and Carotid Bifurcation Atherosclerosis provides a comprehensive overview of the most recent advancements in instrumentation, imaging techniques including the use of contrast enhancement agents, plaque image analysis and its automation, elastography and plaque motion analysis; also, the use of ultrasonic and other biomarkers in the detection of the high risk cardiovascular individual. Finally, it deals with the application of IVUS, TCD and carotid plaque characterization in clinical practice and in stroke risk stratification. Ultrasound and Carotid Bifurcation Atherosclerosis is intended for all those working in the field of atherosclerosis, ultrasound imaging and cardiovascular risk, including the clinician, the vascular ultrasonographer, the epidemiologist, the molecular biologist, the biomedical engineer and the informatics scientist. Furthermore, this book bridges the gap between the researcher and the clinician, who is keen to incorporate the latest results of research to his daily practice.
Download or read book Manual of Neurosonology written by László Csiba and published by Cambridge University Press. This book was released on 2016-04-28 with total page 333 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neurosonology is non-invasive, portable, and has excellent temporal resolution, making it a valuable and increasingly popular tool for the diagnosis and monitoring of neurological conditions when compared to other imaging techniques. This guide looks beyond the use of neurovascular ultrasound in stroke to encompass a wide range of other neurological diseases and emergencies. It offers a practical approach to the examination of patients, interpretation of ultrasound studies, and the application of neurosonology to the development of management and treatment strategies. Each chapter incorporates a thorough and clear procedural methodology alongside scanning tips for trainees; this step-by-step approach is further enhanced by example images and focused diagnostic questions. Authored and edited by international experts, this practical manual of neurosonology is an invaluable resource for neurologists, neurosurgeons, intensivists, radiologists, and ultrasonographers.
Download or read book Plaque Imaging An Issue of Neuroimaging Clinics of North America written by J. Kevin DeMarco and published by Elsevier Health Sciences. This book was released on 2016-01-07 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: This issue of Neuroimaging Clinics of North America focuses on Plaque Imaging. Articles will include: 3D carotid plaque MR imaging, Analysis of multi-contrast carotid plaque MR imaging, Incorporating carotid plaque imaging into routine clinical carotid MRA, PET-CT imaging to assess future cardiovascular risk, Utility of combining PET and MR imaging of carotid plaque, 3D carotid plaque ultrasound, Contrast-enhanced carotid plaque ultrasound, Detection of vulnerable plaque in patients with “cryptogenic stroke, Measuring plaque burden in secondary prevention of asymptomatic patients with known carotid stenosis, Plaque imaging in primary prevention of cardiovascular disease, Plaque imaging to decide on optimal treatment: medical versus CEA versus CAS, Clinical perspective of carotid plaque imaging, and more!
Download or read book Duplex Ultrasound Assessment of Carotid Arterial Atherosclerotic Disease written by Savvas Loizos and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Purpose: Ultrasound assessment of carotid disease is currently based on stenosis haemodynamic effects. The accuracy of direct stenosis measurement remains unclear, while research on atherosclerosis suggests identification of other plaque characteristics beyond size. The aim of the study is to investigate whether direct stenosis measurement and plaque ultrasound image analysis could potentially be used for more accurate diagnostic investigation. Method and material: Eighty-seven patients with cardiovascular disease had a carotid duplex ultrasound scan and velocity and B-mode measurements data were recorded for direct diameter measurement evaluation. Forty patients were scanned for quantitative plaque analysis and association of several parameters with symptoms was investigated. Results: For the degree of stenosis, ECST method indicated greater agreement among direct measurement methods with velocity criteria, however in cases of mild stenosis difference was reported. ECST method measurements showed considerably better agreement with MRA stenosis calculations compared with other methods. Intima- media grey scale level was associated with plaque echogenicity but the correlation was not significant, however there was an association with blood cholesterol levels. Percentages of plaque area with grey scale value less than 35 and 40 showed good accuracy in identifying symptomatic patients. As far as fibrous cap is concerned, a thickness less than 300 urn was well correlated with symptomatic disease, however no association was noted for its echogenicity. Conclusion: ECST direct stenosis measurement method could potentially be used for better stenosis classification in cases with inconclusive haemodynamic estimations. Quantitative plaque analysis, such as fibrous cap thickness measurement and grey level analysis, shows promising results in association with symptomatic disease and particular plaque characteristics.
Download or read book Duplex Ultrasound Assessment of Carotid Arterial Atherosclerotic Disease written by Savvas Loizos and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Clinical Diagnosis of Atherosclerosis written by M. G. Bond and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is the product of a February 1982 conference, cosponsored by the American Heart Association, the National Institutes of Health, and the Bowman Gray School of Medicine, which examined techniques for delineating quantitatively the natural history of atherosclerosis. Against the background of current pathologic and clinical knowledge of atherosclerosis, invasive and noninvasive evaluative methods now in use and under development are surveyed in depth. Correlative clinicopathologic studies of atherosclerosis pose special questions with respect to both luminal and plaque characteristics that are addressed in this volume. An old observa tion, based on the examination of arterial casts, suggested that the so-called nodose lesion of atherosclerosis may be at first flattened into the wall of a weakened, dilated artery, rather than raised into the lumen. This is now fully confirmed in vivo by ultrasonic and other imaging techniques. The morbid anatomist is challenged anew to describe lesions as they are likely to occur in vivo. To achieve closer correlation with natural conditions, perfu sion fixation of arteries under arterial pressure is becoming more widely used and has already demonstrated more valid quantita tion of the composition and configuration of lesions. While the noninvasive methods of B-mode and Doppler ultrasound are suitable only for the clinical study of superficial arteries, such as the carotid or femoral, the new and relatively noninvasive procedure of intravenous digital subtraction angio graphy can be effectively used for the examination of deep systems, such as cerebral vessels.
Download or read book Multidetector Row CT Angiography written by Roberto Passariello and published by Springer Science & Business Media. This book was released on 2005-08-02 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multidetector-row CT has dramatically improved the results of computed tomography in all clinical applications, but its beneficial impact has been most striking in vascular imaging. The simplicity of acquisition and the wide availability of equipment make this modality especially suitable for routine clinical application. In this book the basic aspects of multidetector-row CT angiography are comprehensively reviewed. Individual chapters are included on technical principles, image processing techniques and contrast agent administration. All clinical applications are then discussed in depth, with lucid descriptions of the examination technique for particular clinical indications and of the findings that characterize specific diseases. Limitations and advantages in comparison with other imaging modalities are considered. A large number of high-quality black and white and color illustrations help to explain the clinical findings.
Download or read book Ultrasound and Atherosclerosis written by Jerker Persson and published by . This book was released on 1997 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Atherosclerotic Plaques written by Robert W. Wissler and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 307 pages. Available in PDF, EPUB and Kindle. Book excerpt: The philosophy of this NATO Advanced Research Workshop and the monograph it has yielded is that if you put a small number of very talented and creative scientists of different backgrounds and documented accomplishments together in a cloistered place for a few days to consider a very important and timely topic, many new ideas will be generated. The keynote of this conference was the Future. By this we mean the expected future developments of highly reliable sequential quantitative measurements of atherosclerotic plaque size and components in living human subjects. Some of the best minds and the most experienced and talented individuals at the leading edges of imaging of arteries were involved; some of the best scientists and students of the atherosclerotic plaque and its components participated; and some of the leading investigators of the cell biology or, as we call it in the USA, the pathobiology of atherosclerosis, contributed important new information. All of these individuals were actively involved in the conference and each obviously had carefully prepared and was able to communicate effectively.
Download or read book Atherosclerotic Carotid Plaque Assessment with Multidetector Computed Tomography Angiography written by Thomas Thijs Weert and published by . This book was released on 2009 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis evaluates the role of MDCT angiography in 1) the depiction of atherosclerotic disease and subsequent luminal stenosis in the arteries that supplies the brain with blood, and 2) the assessment of atherosclerotic plaque features that have been related to plaque vulnerability. The studies can be subdivided in three main categories: 1) optimization of data acquisition protocol, 2) validation studies, including assessment of the accuracy of MDCTA in comparison to histology and interobserver studies, and 3) clinical cross-sectional studies. From the first part of this thesis we can conclude that an optimal protocol for MDCT angiography of the supra-aortic arteries incorporates the use of 80 ml contrast material and a 40 ml saline bolus chaser, a craniocaudal scan direction, and in respect to atherosclerotic carotid plaque imaging a tube current of 120 kVp and an intermediate reconstruction algorithm. The second part of this thesis allows to conclude that MDCTA is capable of characterizing and quantifying plaque and plaque component areas in good correlation with histology. However, lipid core can only be adequately quantified in mildly calcified plaques, and in vivo assessment of atherosclerotic plaque and plaque component volumes is feasible with a moderate reproducibility. In addition we can conclude that, with MDCT angiography, intracranial carotid artery calcifications can reproducibly be quantified and that carotid plaque surface morphology can be assessed with a high reproducibility. In the third part of this thesis we evaluated the characteristics of possible MDCTA-assessed plaque parameters (the volume of intracranial calcifications, carotid plaque morphology, and carotid plaque volume and plaque component volumes). Associations were found with several cardiovascular risk factors. Some plaque parameters were related to the presence and type of cerebrovascular symptomatology. We conclude that atherosclerotic plaque parameters can be imaged adequately with MDCTA. These parameters seem to have a possible additional value, besides the degree of stenosis, as a marker of atherosclerotic disease and as predictor of (recurrent) ischemic cerebrovascular events.
Download or read book Quantitative Assessment of Carotid Atherosclerotic Plaque Composition Using MRI written by Sharon Clarke and published by . This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Translational Research in Stroke written by Paul A. Lapchak and published by Springer. This book was released on 2017-12-20 with total page 567 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book mainly discusses the current status of stroke transnational research and allows the reader to understand the interplay of common comorbidities in the stroke population such as diabetes and hypertension, and provides insight into stroke targets to promote cell survival, angiogenesis, neurogenesis, and most importantly, functional recovery after stroke. Throughout the world, stroke is still a leading cause of mortality and morbidity; each year approximately 15 million people worldwide suffer from stroke. Stroke is now the leading cause of death and disability in China. Large communities of stroke survivors are eagerly awaiting scientific advances in transnational stroke research that would offer neuroprotective therapeutics for acute stroke management, or rehabilitation and regenerative strategies utilizing novel stem cell-based approaches. While research is ongoing, the Editors have compiled this volume to help the further understanding of the pathophysiology of stroke and to review and identify future potential biomarkers. The book is written for students, researchers and physicians in neurosciences, neurology and neuroradiology.
Download or read book Duplex Ultrasound Evaluation of Carotid Artery Atherosclerosis written by Catriona O'Farrell and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Noninvasive Vascular Diagnosis written by Ali F. AbuRahma and published by Springer. This book was released on 2017-10-02 with total page 853 pages. Available in PDF, EPUB and Kindle. Book excerpt: This large format book is the definitive text on vascular surgery written by expert editors and contributors. It is well supported by exceptional illustrative material. The book is invaluable to all those who work in vascular laboratories as wel.l as internists, cardiologists, vascular laboratory directors and staff, general surgeons involved in vascular surgery and the vascular surgery community in general Noninvasive Vascular Diagnosis comprehensively covers all aspects of noninvasive evaluation of the circulatory system in the extremities. The increasing popularity of noninvasive techniques is not reflected in the number of comprehensive works on the topic and it is clear from the success of the first edition that the demand for an updated volume is increasing.
