Download or read book Development and Application of Non invasive Imaging Methods for the Evaluation of Acute Myocardial Infarction written by Xiaoguang Zhu and published by . This book was released on 2010 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Noninvasive Imaging of Myocardial Ischemia written by Constantinos Anagnostopoulos and published by Springer Science & Business Media. This book was released on 2006-12-22 with total page 319 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ischemic heart disease (IHD) is the main cause of morbidity and mortality in the developed world. Despite advances and new developments in primary and secondary prevention, the prevalence of the disease and its complications remain high. Early detection has been shown to reduce significantly the risk of cardiac events such as myocardial infarction and death, while modern cardiology now provides specialists and general physicians with a variety of procedures for the assessment of IHD using noninvasive methods. This book reviews the currently available imaging techniques for the diagnosis and management of IHD. In addition, the role of cardiac imaging for the detection of viability and hibernation is discussed in detail.

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.

Download or read book Clinical Applications of Non invasive Imaging Techniques in Suspected Coronary Artery Disease and in Acute Myocardial Infarction written by and published by . This book was released on 2015 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Noninvasive Imaging of Cardiac Metabolism written by Ernst E. van der Wall and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: F.J.Th. WACKERS Metabolic imaging: The future of cardiovascular nuclear imaging? Since cardiovascular nuclear imaging emerged as a new subspecialty in the mid-1970s, the field has gone through an explosive growth. Radionuclide techniques became readily recognized as important new diagnostic aids in the armamentarium of the clinical cardiologist. Initially, cardiovascular nuclear imaging focused on static myocardial imaging using either thallium-201 or technetium-99m-pyrophosphate for diagnosing acute myocardial infarction. Shortly thereafter, multigated equilibrium radionuclide angiocardiography became the most widely used noninvasive method for assessing cardiac function. Furthermore, attention and clinical application shifted towards the use of radionuclide techniques in conjunction with exercise testing, either with thallium-20 1 myocardial perfusion imaging or technetium-99m left ventricular function studies. The future of cardiovascular nuclear imaging appeared exciting and promising. However, around 1980 pessimists predicted the premature demise of cardiovascular nuclear imaging with the introduction of digital subtraction angiography and nuclear magnetic resonance imaging. These doomsayers have been proven wrong: in 1985 cardiovascular nuclear imaging is thriving and, in many centers, even expanding. Although digital substraction angiography and magnetic resonance imaging provided exquisite anatomic detail, for practical evaluation of patients with ischemic heart disease - in the Coronary Care Unit or exercise laboratory - nuclear techniques appeared to be more practical.

Download or read book Integrated Non Invasive Cardiovascular Imaging A Guide for the Practitioner written by IAEA and published by International Atomic Energy Agency. This book was released on 2021-06-14 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: Integrated cardiovascular imaging is the optimal use of multiple imaging modalities to obtain complementary information about cardiac diseases, to aid in diagnosis, determine aetiology and prognosis, with the ultimate objective of effectively guiding clinical decision making. Over the past few decades, advances in technology have contributed to the development of new imaging modalities and refinement of existing ones, leading to major improvements in the accuracy of diagnosing cardiovascular disease. While modality-centric expertise has been the primary driver of improvements in each modality, this has also contributed to imagers working in silos resulting with limited inter-modality coordination and collation of information relevant for patient care. This publication provides comprehensive guidance on the rationale and implementation of integrated cardiovascular imaging for practitioners.

Download or read book Imaging and Intervention in Cardiology written by C.A. Nienaber and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this work is to give clinicians and interventionalists an overview of the use of cardiac imaging techniques in combination with modern interventional procedures such as thrombolysis, catheter-based coronary revascularization, valvuloplasty and interventions in congenital heart disease.

Download or read book Noninvasive Imaging of Hemorrhagic Myocardial Infarction with Confounder Corrected T2 Cardiac MRI written by Xingmin Guan and published by . This book was released on 2022 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: The current gold-standard approach for detection and quantification of intramyocardial hemorrhage (IMH) is T2* cardiovascular magnetic resonance imaging (CMR). T2*-based imaging techniques have been demonstrated to have high sensitivity for detecting hemorrhage and residual iron. The conventional T2*-based imaging employed for IMH imaging is based on a 2D breath-held, ECG-triggered, segmented, multi-gradient-echo sequence. More recently, a dark-blood cardiac T2* MRI technique has emerged for imaging of global iron overload such as thalassemia. It has been interchangeably used with bright-blood T2* MRI for imaging of local iron overload such as intramyocardial hemorrhage. To date however, dark-blood T2* techniques for intramyocardial hemorrhage characterization has not been validated. In Chapters 2 and 3, we investigated the diagnostic capacity of dark-blood T2* MRI against bright-blood T2* MRI for intramyocardial hemorrhage characterization in both clinical and preclinical settings. We found that double-inversion-recovery prepared dark-blood T2* images provide lower signal-to-noise ratio and lower contrast-to-noise ratio between hemorrhage and remote myocardium, consequently underestimating the hemorrhage extent. Dark-blood T2* MRI also demonstrated weaker sensitivity, specificity, accuracy, and inter-observer variability compared to bright-blood T2*-weighted MRI. Our studies also showed that the loss in SNR and CNR in dark-blood T2* imaging emerges from the signal loss following double-inversion-recovery preparation and insufficient recovery time between double-inversion-recovery preparation and readout. Hence, we conclude that dark-blood T2* MRI does not have the same diagnostic capacity for assessment of intramyocardial hemorrhage and bright-blood T2* MRI should be the preferred choice for clinical use. Studies have shown that fat infiltration is a common phenomenon in chronic myocardial infarction. However, signal from fat protons can confound the T2* assessment of intramyocardial hemorrhage. To address this issue, in Chapter 4, we studied the influence of fat infiltration on iron quantification in T2* mapping using a widely accepted water-fat separation algorithm. Specifically, we evaluated the temporal dependence of fat infiltration in hemorrhagic myocardial infarctions. We found that fat infiltration was observed in early and late chronic phases of myocardial infarctions, which if not corrected for, can underestimate the extent of iron content within the infarct zone. Notably, we also found that the amount of fat infiltration in chronic phase of MI was closely correlated with the amount of iron. Another major confounder in conventional 2D breath-held ECG-gated T2* imaging is motion artifacts. In clinical settings, patients with acute myocardial infarctions often find it difficult to hold their breath during cardiac MRI exams. Some patients may even suffer from arrhythmia (irregular heartbeat). Both situations can lead to unsuccessful gating during data acquisition leading to motion artifacts on T2* images especially with long echo times. To address this issue, in Chapter 5, we developed a motion-resolved fully ungated free-breathing 3D cardiac T2* imaging technique using a low-rank tensor framework to accommodate clinical needs and to mitigate motion artifacts due to unsuccessful breath-holds or ECG gating. We tested our 3D LRT technique in healthy volunteers and animal models for image quality, SNR and T2*. We found that the proposed 3D LRT technique can provide superior image quality compared to conventional T2* techniques at the same level of signal-to-noise ratio. T2* measured from proposed 3D LRT data showed excellent agreement with T2* from conventional 2D approach. We also found that a key benefit of 3D acquisition is that it permits the reconstruction of high-resolution T2* images using the proposed 3D LRT T2* approach. High-resolution T2* images from proposed 3D LRT approach showed superior image quality and diagnostic capacity for assessment of intramyocardial hemorrhage. In Chapter 6, the proposed 3D LRT T2* imaging approach was validated on an animal model for feasibility and capability for characterization of intramyocardial hemorrhage. We found that our 3D LRT approach had excellent image quality and diagnostic accuracy in the assessment of intramyocardial hemorrhage compared to the 2D breath-held and gated acquisitions. Broadly, this dissertation identified and corrected a number of critical confounders affecting the accuracy of T2* MRI in assessment of intramyocardial hemorrhage. By identifying and solving these confounders in T2* imaging, we aim to improve the diagnostic capability of MRI for prognosis and therapeutic care of patients with hemorrhagic myocardial infarctions. In future work, feasibility of the newly developed fully ungated free-breathing 3D LRT T2* imaging technique will be investigated on patients for imaging of intramyocardial hemorrhage. And the potential of high-resolution T2* imaging which greatly improved intravoxel dephasing due to off-resonance will be explored.

Download or read book Applications of Non Invasive Vascular Imaging Techniques in Cardiovascular Risk Assessment and Management written by Rui Hu and published by . This book was released on 2017-01-27 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Applications of Non-invasive Vascular Imaging Techniques in Cardiovascular Risk Assessment and Management" by Rui, Hu, 胡瑞, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Abstract of thesis entitled Applications of Non-Invasive Vascular Imaging Techniques in Cardiovascular Risk Assessment and Management Submitted by Hu Rui for the Degree of Master of Philosophy at the University of Hong Kong in June, 2006 Non-invasive imaging techniques to detect atherosclerosis have emerged as useful tools for assessing the risk of cardiovascular diseases and surrogate endpoints for monitoring cardiovascular risk interventions. This thesis presents the results of two cross-sectional studies and one interventional study of the applications of vascular ultrasound and ophthalmoscope in assessing structure or function in macrovasculature and microvasculature. In the first cross-sectional study, the relative importance of diagnostic and prognostic values of non-invasive ultrasound assessment of carotid intima-media thickness (IMT) and brachial flow-mediated vasodilatation (FMD) were evaluated in 298 consecutive high-risk Chinese patients admitted for coronary angiography due to chest discomfort. The mean maximum of IMT (mmIMT), but not FMD, was found to be an independent predictor for the presence of the significant coronary artery disease (CAD) of >50% stenosis, and it closely correlated with the extent of CAD as assessed by Gensini angiographic score. During a median follow up of 16 months, 36 patients (12.8%) experienced spontaneous cardiovascular events (cardiovascular death, acute myocardial infarction, unstable angina pectoris and congestive heart failure). The impaired brachial FMD rather than the increased carotid mmIMT independently predicted the occurrence of spontaneous cardiovascular events. In patients without significant CAD, women were more likely than men to develop cardiovascular events. Therefore, endothelial function test of the brachial artery to measure FMD could be a useful tool to identify patients at risk of cardiovascular IIevents for intensive risk factor modification and vigilant follow up, especially in women without significant CAD. Moreover, impaired nitrate-mediated vasodilatation (NMD) was found to be a marker that could reflect the status of nitrate tolerance. Recent studies suggested that arteriolar retinopathy reflected systemic microvascular disease and was associated with increased risk of cardiovascular events. In the second cross-sectional study, the relationship between cardiovascular risk factors and arteriolar retinopathy as assessed by ophthalmoscope was investigated in 243 apparently healthy Chinese subjects during routine health checks. In this study, aging, hypertension, smoking and being overweight were identified as important risk factors for the presence of arteriolar retinopathy. Smoking was also associated with an increase of homocysteine in subjects with grade II retinopathy. However, smoking rather than hyperhomocysteinemia was found to be an independent predictor for the progression of arteriolar retinopathy. Finally, the short-term effect of aggressive cardiovascular risk factor modifications on endothelial function was studied in 25 CAD patients with concomitant hypertension and hypercholesterolemia. After 14 weeks of intensified blood pressure and lipid control with a combination with a calcium channel blocker and statin, there was a significant improvement in endothelial function. This finding provides further evidence to support aggressive risk factor modificat

Download or read book Noninvasive Imaging of Heart Failure written by Vasken Dilsizian and published by Saunders. This book was released on 2006 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heart failure is a progressive disease with the potential for gradual deterioration. Non-invasive imaging techniques play a critical role in both assessing what caused the heart failure as well as monitoring the damage and deterioration of the heart. In this issue of Heart Failure Clinics, experts discuss a number of non-invasive imaging techniques including nuclear probes for assessing myocardial viability, hyperenhancement MRI, and novel techniques of ultrasound assessment and diastolic dysfunction.

Download or read book Diseases of the Chest Breast Heart and Vessels 2019 2022 written by Juerg Hodler and published by Springer. This book was released on 2019-02-19 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book focuses on diagnostic and interventional imaging of the chest, breast, heart, and vessels. It consists of a remarkable collection of contributions authored by internationally respected experts, featuring the most recent diagnostic developments and technological advances with a highly didactical approach. The chapters are disease-oriented and cover all the relevant imaging modalities, including standard radiography, CT, nuclear medicine with PET, ultrasound and magnetic resonance imaging, as well as imaging-guided interventions. As such, it presents a comprehensive review of current knowledge on imaging of the heart and chest, as well as thoracic interventions and a selection of "hot topics". The book is intended for radiologists, however, it is also of interest to clinicians in oncology, cardiology, and pulmonology.

Download or read book Coronary Microvascular Dysfunction written by Filippo Crea and published by Springer Science & Business Media. This book was released on 2013-08-15 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past two decades a number of studies have shown that abnormalities in the function and structure of coronary microcirculation can be detected in several cardiovascular diseases. On the basis of the clinical setting in which it occurs, coronary microvascular dysfunction (CMD) can be classified into four types: CMD in the absence of any other cardiac disease; CMD in myocardial diseases; CMD in obstructive epicardial coronary artery disease; and iatrogenic CMD. In some instances CMD represents an epiphenomenon, whereas in others it represents an important marker of risk or may contribute to the pathogenesis of myocardial ischemia, thus becoming a possible therapeutic target. This book provides an update on coronary physiology and a systematic assessment of microvascular abnormalities in cardiovascular diseases, in the hope that it will assist clinicians in prevention, detection and management of CMD in their everyday activity.

Download or read book Coronary Microvascular Obstruction in Acute Myocardial Infarction written by Giampaolo Niccoli and published by Academic Press. This book was released on 2018-07-07 with total page 401 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coronary Microvascular Obstruction in Acute Myocardial Infarction: From Mechanisms to Treatment provides a comprehensive understanding of the phenomenon of coronary microvascular obstruction (CMVO) that is the main limitation of reperfusion therapies in ST-elevation myocardial infarction. It provides in-depth coverage of the phenomenon of CMVO which heavily affects prognosis by increasing the risk of death and heart failure at follow-up. A first of its kind reference dedicated solely to this topic, it is appropriate for a wide audience, from researchers, to those who aid in the management, prevention and treatment of CMVO. Provides in-depth coverage of coronary microvascular obstruction (CMVO), spanning research, management, prevention and treatment Includes the most up-to-date information on CMVO as presented from top experts around the word Provides access to a companion website with extra material, including tables, additional references and instructional videos Gives extensive coverage on how to measure CMVO, including in-depth indexes that can be used to detect and quantify the phenomenon

Download or read book Cardiovascular Disability written by Institute of Medicine and published by National Academies Press. This book was released on 2010-12-04 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Social Security Administration (SSA) uses a screening tool called the Listing of Impairments to identify claimants who are so severely impaired that they cannot work at all and thus immediately qualify for benefits. In this report, the IOM makes several recommendations for improving SSA's capacity to determine disability benefits more quickly and efficiently using the Listings.

Download or read book Cardiac SPECT Imaging written by E. Gordon DePuey and published by Lippincott Williams & Wilkins. This book was released on 2001 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cardiac SPECT Imaging, Second Edition offers the best of all possible worlds--a critical topic, internationally recognized authors and cutting-edge coverage. It guides you through all aspects of the modality--from basic principles (acquiring and processing images, quality control)...and clinical applications (evaluating myocardial infarction and coronary artery disease)...to the very latest equipment. It even compares SPECT with other modalities (PET, CT, MRI, and echocardiography) to ensure smart, cost-effective decisions by both the cardiologist and nuclear medicine physician.Look for new chapters on attenuation correction, gated perfusion SPECT, radiopharmaceuticals, and myocardial perfusion SPECT, as well as the very latest on myocardial perfusion SPECT in conjunction with exercise and pharmacologic stress, assessment of perfusion/viability with Tc-99m agents, how SPECT compares with other advanced cardiac imaging modalities, and more!

Download or read book Diagnosis and Management of Hypertrophic Cardiomyopathy written by Barry J. Maron and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 527 pages. Available in PDF, EPUB and Kindle. Book excerpt: Diagnosis and Management of Hypertrophic Cardiomyopathy is aunique, multi-authored compendium of information regarding thecomplexities of clinical and genetic diagnosis, natural history,and management of hypertrophic cardiomyopathy (HCM)—the mostcommon and important of the genetic cardiovasculardiseases—as well as related issues impacting the health oftrained athletes. Edited by Dr. Barry J. Maron, a world authority on HCM, and withmajor contributions from all of the international experts in thisfield, this book provides a single comprehensive source ofinformation concerning HCM. Recent advances in the field arediscussed, including the importance of left ventricular outflowtract obstruction, the use of implantable defibrillators for theprevention of sudden death in young people, definition of thegenetic basis for HCM and its role in clinical diagnosis and riskstratification, the development of more precise strategies forassessing the level of risk for sudden death among all patientswith HCM, and the evolution of invasive interventions for heartfailure symptoms, such as surgical management and its alternatives(alcohol septal ablation and dual-chamber pacing). Key Features: Contributions from all experts in the field,representing diverse viewpoints regarding this heterogeneousdisease and related issues in athletes Information to dispel misunderstandings regarding issuesassociated with HCM and cardiovascular disease in athletes The only comprehensive source of information available on thetopic

Download or read book Nuclear Cardiac Imaging written by Ami E. Iskandrian and published by Oxford University Press. This book was released on 2008-09-25 with total page 750 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nuclear cardiac imaging is the diagnostic technique of using radiology and chemical markers to track cardiac performance. These imaging studies provide a wide range of information about the heart, including how much the heart contracts, the amount of blood supply to the heart and whether parts of the heart muscle are alive or dead. This is essential information for cardiologists, and nuclear imaging has become an increasingly important part of the cardiologist's armoury of diagnostic techniques. Iskandrian's text has become a leading book in the field and the fourth edition will continue the tradition. The text is updated throughout to reflect the many advances in the field, and, as a new feature, each chapter concludes with a question and answer session on important and difficult clinical issues.