Download or read book Associations Between Magnetic Resonance Imaging Detected Intraplaque Hemorrhage and Carotid Artery Atherosclerotic Plaque Components in Mild to Severe Stenotic Non surgical Patients written by Bowen Zhang and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stroke represents a major cause of death globally. One major cause of stroke is atherosclerosis, especially when developed in carotid arteries. Certain plaque components, such as intraplaque hemorrhage (IPH), lipid-rich necrotic core (LRNC), calcification, and high vessel wall (VW) volume are critical determinants for the stability of a plaque and can now be identified noninvasively with multicontrast magnetic resonance imaging (MRI). This thesis examined the feasibility of using a standardized multicontrast MRI protocol in a multicenter setting with only clinically available hardware and software and showed over 90% of patients had acceptable quality images to allow study of plaque components quantitatively. This thesis also examined the quantitative relationship of IPH with other plaque components. Specifically, the volume of IPH was significantly associated with volume of VW and LRNC but not calcification. Our results provided quantitative insights of IPH and may facilitate the planning of future multicenter endeavors studying carotid atherosclerosis.
Download or read book Magnetic Resonance Imaging Detected Intraplaque Hemorrhage in Non stenotic Carotid Artery Atherosclerotic Disease of Asymptomatic Diabetic Patients written by Tishan Maraj and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cerebrovascular disease represents a major cause of death globally. It is directly related to atherosclerotic development in the carotid arteries where risk is mainly assessed by measurement of stenosis. Diabetic patients are predisposed to cerebrovascular event occurrence and atherosclerotic development. An advanced feature of atherosclerotic disease is intraplaque hemorrhage (IPH), which increases the risk of such events. In this study, magnetic resonance imaging techniques were used to define an optimal method for measuring IPH. This method was applied to a cohort of diabetic patients without carotid artery stenosis, to find the prevalence of IPH, which was compared with carotid artery wall measurements to determine its related effects. This thesis provides evidence that advanced features of atherosclerosis, in the form of IPH, can be found even when no carotid stenosis is present and may provide insight into the added risk borne by diabetic patients.
Download or read book Intracranial Atherosclerosis written by Jong S. Kim and published by John Wiley & Sons. This book was released on 2009-01-26 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intracranial atherosclerosis is the dominant cause of stroke inover 70% of the world’s population. Globalization is leadingto an increasingly heterogeneous society everywhere. Advances inimaging techinology allow this previously inaccessible pathology tobe clinically studied. Edited by internationally renowned clinicians, IntracranialAtherosclerosis is the first book to examine intracranialcauses of stroke. Clinical practice is allied with basic science toguide all those with an interest in stroke on the diagnosis andmanagement of intracranial atherosclerosis.
Download or read book Intraplaque Hemorrhage Quantification Using Carotid Magnetic Resonance Imaging written by Jin Liu and published by . This book was released on 2017 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: As a critical feature of vulnerable atherosclerotic plaque, intraplaque hemorrhage (IPH) is associated with fast plaque progression and subsequent cerebral ischemic events. Although presence/absence of intraplaque hemorrhage is a recognized biomarker for plaque vulnerability assessment, quantitative measurement of the intraplaque hemorrhage signals on MRI may contribute greater utilities to access the evolution of intraplaque hemorrhage and its vulnerability. Recent studies have demonstrated that intraplaque hemorrhage volume and signal intensity could either progress or regress along time and that the change differs between symptomatic and asymptomatic plaques. Therefore, intraplaque hemorrhage quantification may contribute to a precise assessment of atherosclerosis's clinical risk. However, intraplaque hemorrhage detection and segmentation have mainly relied on manual review, which is not only time-consuming but also prone to measurement errors due to flexible window display level settings. Furthermore, carotid MRI often suffers from complex motion problems, causing degradation of image quality and inaccurate vessel wall delineation. In this dissertation, a semi-automatic method was developed based on histological validation for intraplaque hemorrhage detection and quantification from magnetic resonance imaging (MRI). First, intraplaque hemorrhage detection criteria was established on the widely used Magnetization-Prepared Rapid Acquisition Gradient-Echo (MP-RAGE) sequence and recently developed Simultaneous Noncontrast Angiography and intraPlaque hemorrhage (SNAP) sequence. Both adjacent soft tissue and local median values on MP-RAGE were found to be good intensity normalization references for intraplaque hemorrhage detection, while the sternocleidomastoid muscle on the SNAP reference image was chosen for SNAP image intensity normalization. Second, a volumetric image processing method was developed on 3D SNAP and reproducibility for intraplaque hemorrhage quantitative measures were demonstrated. Lastly, a non-marker-attached motion detection and correction technique based on structured light was proposed for both abrupt and bulk motion correction in carotid MRI for better vessel wall delineation, which could also potentially improve delineation for intraplaque hemorrhage and other plaque components.
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 Mechanisms of Vascular Disease written by Robert Fitridge and published by University of Adelaide Press. This book was released on 2011 with total page 589 pages. Available in PDF, EPUB and Kindle. Book excerpt: New updated edition first published with Cambridge University Press. This new edition includes 29 chapters on topics as diverse as pathophysiology of atherosclerosis, vascular haemodynamics, haemostasis, thrombophilia and post-amputation pain syndromes.
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 Coronary Magnetic Resonance Angiography written by Andre J. Duerinckx and published by Springer Science & Business Media. This book was released on 2002 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, there has been increasing interest in the clinical applications of coronary angiography techniques. Coronary MRA can be instrumental in the evaluation of congenital coronary artery anomalies, however, the complexity of advanced MR pulse sequences and strategies may be overwhelming to many. Coronary MR Angiography demystifies the art of coronary MRA by providing a text in plain language with clearly illustrated imaging steps and protocols. Designed to bridge the gap between radiology and cardiology, it is written for physicians and scientists planning to incorporate this technique into their research or practice.
Download or read book Transient Ischemic Attack and Stroke written by Sarah T. Pendlebury and published by Cambridge University Press. This book was released on 2009-02-19 with total page 407 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accessible handbook covering the investigation, diagnosis and management of transient ischemic attacks and minor strokes.
Download or read book Interventional Neuroradiology written by and published by Elsevier. This book was released on 2020-12-01 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interventional Neuroradiology, Volume 179, provides a basic outline of the field of interventional neuroradiology that is accessible to fellows, residents, clinicians and researchers in various disciplines, from diagnostic and interventional radiology to vascular neurology, general and vascular neurosurgery, and vascular biology. This volume offers a timely update to experienced clinical practitioners in a logical, easy-to-follow format. Content includes neurovascular anatomy, vascular biology, neurovascular physiology, vascular imaging, as well as sections on the diagnosis and therapeutic treatment of neurovascular disease. Explores the general scope of current clinical interventional neuroradiology, both for endovascular and percutaneous image-guided diagnosis and interventions in a variety of pathologies Defines basic physiological principles (e.g., cerebral perfusion pressure, intracranial pressure, vasospasm, tissue osmolality) with reference to those most essential to the management of neurovascular diseases Discusses pathophysiology and the unique challenges of pediatric cerebrovascular diseases, as well as endovascular and surgical therapies
Download or read book INTRAPLAQUE HEMORRHAGE IN SYMPTOMATIC AND ASYMPTOMATIC PROGRESSIVE CAROTID ARTERY STENOSIS U2013 PILOT STUDY written by David Skoloudik and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Background: Intraplaque hemorrhage (IPH) belongs to potential mechanisms of unstable plaque development. Study aims to compare the IPH occurrence in patients with asymptomatic stable (ASS), asymptomatic progressive (APS) and symptomatic (SS) carotid artery stenosis u02c350%.Materials and methods: Serial duplex ultrasound (DUS) in a 6-month period and magnetic resonance imaging (MRI) using axial 3DT1w sequence were used for IPH detection in patients with carotid stenosis. Stenoses in patients with ipsilateral stroke/transient ischemic attack within previous 4 weeks or acute ischemic lesion on diffusion-weighted MRI were evaluated as symptomatic. Stenoses with progression of u02c310% since last DUS examination were evaluated as progressive. Echolucent part of atherosclerotic plaque u02c38 mm2 on DUS and hyperintensity on 3DT1w-MRI were evaluated as IPH. Differences in IPH occurrence between ASS, APS and SS patients were statistically evaluated.Results: Totally 32 patients (18 males, mean age 71.3u00b17.7 years) were enrolled during 18 months; 5 patients with ASS, 18 with APS and 9 with SS. MRI examination was not performed in 3 ASS and 1 SS patient. IPH was detected using DUS/MRI in 1 (20%)/2 (40%) of ASS patients, 9 (50%)/8 (53%) of APS patients, and 5 (56%)/4 (50%) of SS patients (pu02c30.05 in all cases). IPH on both DUS and MRI were detected in none of ASS patients, 5 (28%) APS patients and 3 (33%) SS patients (pu02c30.05 in all cases).Conclusion: No significant difference in IPH occurrence was found between ASS, APS and SS patients. Totally 200 patients will be enrolled to the ongoing study.Supported by grant MHCR 17-31016A, 16-30965A.
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.
Download or read book The Vulnerable Plaque Second Edition written by Ron Waksman and published by CRC Press. This book was released on 2007-06-13 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since publication of the First Edition, advances in the diagnosis and prevention and treatment strategies of the vulnerable plaque have necessitated this greatly expanded second edition. With several new chapters covering mainly diagnostic and treatment options, The Handbook of the Vulnerable Plaque will remain the benchmark text for all interventional cardiologists treating vulnerable patients by providing the physician with comprehensive insight into the world of the vulnerable plaque.
Download or read book Plaque Imaging written by Jasjit S. Suri and published by IOS Press. This book was released on 2005 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication starts of with a review of plaque imaging techniques, with an introduction of the segmentation techniques for plaque classification and quantification. Many aspects of plaque imaging techniques are presented in this publication, such as; medical image retrieval and database management, MRI techniques to differentiate stable versus high risk atherosclerosis, composition and morphology of atherosclerotic plaque, analysis of the soft tissue based on computer vision techniques, modelling of coronary artery biomechanics, Cardiac CT for the assessment of cardiovascular pathology with an emphasis on the detection of coronary atherosclerosis, technical and practical issues regarding coronary atherosclerotic plaque imaging by CT (focussing on coronary calcium imaging), feasibility of a non-invasive, in vivo determination of the IBS of arterial wall tissue, high resolution ultrasound images of carotid plaques, the problem of reliable features extraction and classification process and a discussion on advanced mathematical techniques to extract spectral information from the RF data to determine the plaque composition.
Download or read book Women in cardiovascular imaging written by Adelina Doltra and published by Frontiers Media SA. This book was released on 2023-08-30 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Emerging Areas in Extracranial Carotid Stenosis Evaluation and Management written by Seemant Chaturvedi and published by Frontiers Media SA. This book was released on 2022-07-12 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NonInvasive Cardiovascular Imaging A Multimodality Approach written by Mario J. Garcia and published by Lippincott Williams & Wilkins. This book was released on 2012-03-28 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook covers the fundamental principles of cardiovascular imaging modalities and their applications for the diagnosis of cardiovascular diseases. The main focus is on the comprehensive diagnosis of clinical conditions/disease entities through the most effective cardiovascular imaging test or combination. The authors discuss the clinical utility and relative value of each test to address specific clinical questions, based on evidence and expert opinion. Each chapter presents information in the following format: overview, discussion of pathophysiology; differential diagnosis/diagnostic evaluation; prognosis; therapeutic guidance with illustration of treatment pathway. A companion Website will offer the full text, ten multiple-choice questions for each chapter, still and cine images, and imaging clips.
