Myocardial Torsion
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Myocardial Torsion
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Author : Jorge C. Trainini
language : en
Publisher: Editorial Biblos
Release Date : 2020-04-02
Myocardial Torsion written by Jorge C. Trainini and has been published by Editorial Biblos this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-04-02 with Medical categories.
Myocardial Torsion is a book different from others, simply because this book is unique, unusual, and I dare say with admiration, it is a curious book, partly magical, full of personality, for initiatory readers, revealing, provocative, challenging. The book has the infrequent peculiarity of being based, to a great extent, on original personal and multidisciplinary investigations, granting it an important extra value. The authors define their purpose since the firsts pages of the book: to provide solidity, validity and even more to Torrent Guasp's concepts. This is certainly a different book in its structure, content and elaboration. It is a text that the reader may admire or criticize, that may create skepticism or surprise at the new data it propose, but wich undoudtedly will leavenobody indifferent, and that is something few books can achieve.
Fulcrum And Torsion Of The Helical Myocardium
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Author : Jorge C. Trainini
language : en
Publisher: Editorial Biblos
Release Date : 2022-03-30
Fulcrum And Torsion Of The Helical Myocardium written by Jorge C. Trainini and has been published by Editorial Biblos this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-03-30 with Medical categories.
In this new book, Trainini and his team attempt a step forward and make a series of proposals that come to complete cardiac anatomy, physiology and mechanics. Reading this new investigation is a pleasure that demands continuous attention, so that our "neuronal boxes" do not rebel against the effort it means to sometimes destroy what we have firmly installed in them. The text should be read slowly, as it was never easy to tread in swamp-limited grounds and, as in the ascent to the summit of a difficult mountain, stop now and then to take a breath and enjoy the view as we get near the peak, where we will see the final landscape of the new vision. Then we will be conscious that the effort was worthwhile.
Magnetic Resonance Imaging Of Myocardial Deformation And Scarring In Coronary Artery Disease
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Author : Johan Kihlberg
language : en
Publisher: Linköping University Electronic Press
Release Date : 2017-11-15
Magnetic Resonance Imaging Of Myocardial Deformation And Scarring In Coronary Artery Disease written by Johan Kihlberg and has been published by Linköping University Electronic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-11-15 with categories.
Although improved treatments have reduced the rates of acute complications from myocardial infarction, sequelae such as heart failure and sudden death threaten the future wellbeing of those patients. Secondary prevention after myocardial infarction is related to cardiovascular risk factors and the effect of the infarct on left ventricular function. Cardiovascular magnetic resonance imaging (CMR) is necessary to determine the size of the infarct scar and can with great precision determine left ventricular volumes, left ventricular ejection fraction, and deformation (strain and torsion). The purpose of this thesis was to improve on CMR methods to facilitate image acquisition and post processing in patients with high risk of coronary artery disease (CAD). In Paper 1, a three-dimensional phase-sensitive inversion-recovery (3D PSIR) sequence was modified to measure T1 during a single breath hold. The measured T1 values were used to extrapolate a map of T1 relaxation, which avoided the time-consuming manual determination of the inversion time. The data collection consisted of phantom experiments, Monte Carlo simulations of the effect of various heart rates, and clinical investigation of 18 patients with myocardial infarction. Scar images created with the modified sequence were compared to those created with the standard sequence. The 3D PSIR sequence was able to measure T1 relaxation with a high accuracy up to 800 ms, which is in the suitable range for scar imaging. Simulated arrhythmias showed that the method was robust and able to tolerate some variation in heart rate. The modified sequence provides measurements of inversion time that can be used to facilitate standard scar imaging or to reconstruct synthetic scar images. Images of infarct scar obtained with the 3D PSIR sequence bore striking similarity to images obtained with the standard sequence. In Paper 2, 125 patients with high risk of CAD were investigated using the displacement encoding with stimulated echoes (DENSE) sequence. Image segments with infarct scar area >50% (transmurality) could be identified with a sensitivity of 95% and a specificity of 80% based on circumferential strain calculated from the DENSE measurements. The DENSE sequence was also applied in other directions, but its sensitivity and specificity to detect scar was lower than when used for circumferential strain. In Paper 3, 90 patients with high risk of CAD were examined by DENSE, tagging with harmonic phase (HARP) imaging and cine imaging with feature tracking (FT), to detect cardiac abnormalities as manifested in end-systolic circumferential strain. Circumferential strain calculated with DENSE had higher sensitivity and specificity than the competing methods to detect infarction with transmurality >50%. Global circumferential strain measured by DENSE correlated better with global parameters such as left ventricular ejection fraction, myocardial wall mass, left ventricular end-diastolic and end-systolic volume; than strain measured by FT or HARP. In Paper 4, myocardial torsion was investigated using DENSE, HARP, and FT in 48 patients with high risk of CAD. Torsion measured by each of the three methods was correlated with other global measures such as left ventricular ejection fraction, left ventricular mass, and left ventricular end-diastolic and end-systolic volumes. The torsion measurements obtained with DENSE had a stronger relationship with left ventricular ejection fraction, left ventricular mass, and volumes than those obtained with HARP or FT. DENSE was superior to the other methods for strain and torsion measurement and can be used to describe myocardial deformation quantitatively and objectively.
Ventricular Geometry In Post Myocardial Infarction Aneurysms
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Author : Srilakshmi Adhyapak
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-06-05
Ventricular Geometry In Post Myocardial Infarction Aneurysms written by Srilakshmi Adhyapak and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-06-05 with Medical categories.
The topic of heart failure although extensively researched and reported, has several gray areas. This is especially seen in determining strategies for combating advanced heart failure. The global burden of ischemic heart disease is increasing at an alarming rate to almost pandemic proportions. Even in the presence of state-of the art technology for prompt and successful coronary reperfusion, the population progressing to ischemic cardiomyopathy is substantial. The treatment strategies for ischemic cardiomyopathy do not always ensure optimal clinical results, the reasons for which are varied. The proper patient selection is vital as is the tailoring of suitable therapy. The approach is thus multi-pronged, of which surgical ventricular restoration (SVR) has a definite role. Despite various randomized studies like the STICH-hypothesis 2, where there was a huge selection bias, with patients subjected to an erroneous technique of SVR, with inadequate ventricular remodelling assessment. The present need is to understand the unique anatomy of the left ventricle, its function and perturbations with the onset of heart failure, in order to plan therapeutic strategies to restore near normal anatomy and function. A study of the hemodynamics in ischemic cardiomyopathy is essential, as it differs in certain aspects from other causes of heart failure like idiopathic dilated cardiomyopathy and valvular heart diseases. Since information on these aspects are scattered in various scholarly articles, a concise source in the form of a book would be appropriate and useful for both cardiologists and cardiac surgeons. This project represents a concise review of normal and abnormal cardiac anatomy and physiology, the evolution of SVR to EVLPP with validation of near normal ventricular restoration, plus act as a reference guide for cardiac surgeons with interest in SVR.
Heart Mechanics
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Author : El-Sayed H. Ibrahim
language : en
Publisher: CRC Press
Release Date : 2017-09-19
Heart Mechanics written by El-Sayed H. Ibrahim and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-09-19 with Medical categories.
Based on research and clinical trials, this book details the latest research in magnetic resonance imaging (MRI) tagging technology related to heart mechanics. It covers clinical applications and examines future trends, providing a guide for future uses of MRI technology for studying heart mechanics.
Handbook Of Vascular Motion
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Author : Christopher Cheng
language : en
Publisher: Academic Press
Release Date : 2019-06-15
Handbook Of Vascular Motion written by Christopher Cheng and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-06-15 with Science categories.
Handbook of Vascular Motion provides a comprehensive review of the strategies and methods to quantify vascular motion and deformations relevant for cardiovascular device design and mechanical durability evaluation. It also explains the current state of knowledge of vascular beds that are particularly important for the medical device industry. Finally, it explores the application of vascular motion to computational simulations, benchtop testing and fatigue analysis, as well as further implications on clinical outcomes, product development and business. Describes methods to quantify vascular motion and deformations including choosing what data to collect, relevant medical imaging, image processing, geometric modeling, and deformation quantification techniques Includes deformations for vascular beds of particular importance in medical devices including the coronary arteries and heart, arteries of the head and neck, thoracic aorta and arch branches, abdominal aorta and visceral branches, lower extremity arteries, inferior vena cava, and lower extremity veins Explains how to convert raw deformations into boundary conditions suitable for durability evaluation, provides examples of using this information for computational simulations, benchtop testing, and fatigue analysis, and illustrates examples of how vascular motion affect clinical outcomes, product development, and business
Coronary Artery Disease And The Myocardial Ischemic Cascade An Issue Of Radiologic Clinics Of North America
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Author : U. Joseph Schoepf
language : en
Publisher: Elsevier Health Sciences
Release Date : 2015-04-07
Coronary Artery Disease And The Myocardial Ischemic Cascade An Issue Of Radiologic Clinics Of North America written by U. Joseph Schoepf and has been published by Elsevier Health Sciences this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-04-07 with Medical categories.
State of the Art CT and MR Imaging of Coronary Artery Disease and the Myocardial Ischemic Cascade is covered extensively in this issue of Radiologic Clinics. Articles will include: Imaging Coronary Artery Disease and the Myocardial Ischemic Cascade; CT Imaging of Coronary Artery Plaque; Coronary CT Angiography in Clinical Practice; Beyond Stenosis Detection: CT Approaches for Determining the Functional Relevance of Coronary Artery Disease; CT Assessment of Coronary Artery Disease; Cardiac CT for the Evaluation of the Acute Chest Pain Syndrome; Current State of the Art Cardiovascular MRI Techniques for Assessment of Ischemic Heart Disease; Global and Regional Functional Assessment of Ischemic Heart Disease with Cardiac MRI; MRI of the Coronary Vasculature: Imaging the Lumen, Wall and Beyond; Delayed Enhanced Viability Imaging: Techniques and Clinical Applications; Tissue Characterization of the Left Ventricular Myocardium: State of the Art Techniques and Emerging Clinical Utility; Stress Cardiac MRI: the Role of Stress Functional Assessment and Perfusion Imaging in the Evaluation of Ischemic Heart Disease, and much more!
Vascular Diseases Advances In Research And Treatment 2012 Edition
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Author :
language : en
Publisher: ScholarlyEditions
Release Date : 2012-12-26
Vascular Diseases Advances In Research And Treatment 2012 Edition written by and has been published by ScholarlyEditions this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-26 with Medical categories.
Vascular Diseases—Advances in Research and Treatment: 2012 Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about Vascular Diseases. The editors have built Vascular Diseases—Advances in Research and Treatment: 2012 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Vascular Diseases in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Vascular Diseases—Advances in Research and Treatment: 2012 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.
Multimodality Imaging Innovations In Adult Congenital Heart Disease
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Author : Pastora Gallego
language : en
Publisher: Springer Nature
Release Date : 2021-06-16
Multimodality Imaging Innovations In Adult Congenital Heart Disease written by Pastora Gallego and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-06-16 with Medical categories.
This book focuses on congenital heart disease (CHD) and emerging imaging technologies. It covers all clinically relevant aspects of the fascinating new cardiac imaging technologies, including a comprehensive explanation of their basic principles, practical aspects of novel clinical applications, and detailed descriptions of specific uses in the broad spectrum of clinically important adult CHD. Innovations and emerging technologies for diagnosis and therapeutics, evaluation and treatment are continually evolving, and due to these advances in non-invasive diagnosis, there has been a significant improvement in the survival rates for CHD patient. Novel approaches to trans-catheter interventions and advances in echocardiography, MRI and CT imaging are being developed and incorporated into routine clinical practice, while emerging three-dimensional printing technologies are fundamentally affecting patient care, research, trainee education, and interactions between multidisciplinary teams, patients, and caregivers. In addition, translational technologies on the horizon promise to take this nascent field even further. Exploring the applicability of these emerging technologies in improving our understanding of complex congenital cardiac defect anatomy and physiology will provide new treatment options for this unique population. Written by experts in the field who are also involved in patient care, this book discusses the practical application of innovations in advanced multimodality imaging in the daily clinical routine and offers tips and tricks for beginners.
A Practical Approach To Clinical Echocardiography
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Author : Jagdish C Mohan
language : en
Publisher: JP Medical Ltd
Release Date : 2014-04-30
A Practical Approach To Clinical Echocardiography written by Jagdish C Mohan and has been published by JP Medical Ltd this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-04-30 with Medical categories.
An echocardiogram is a test that uses sound waves to create a moving picture of the heart. The picture is much more detailed than a plain x-ray image and involves no radiation exposure (MedlinePlus). This book is a practical guide to the latest advances and techniques in echocardiography. Beginning with an introduction to the fundamentals of the procedure, the following sections discuss both basic and advanced techniques for different cardiac conditions. Highly illustrated with echo images and diagrams of heart structures, this invaluable reference helps trainees recognise and interpret echocardiographic images and Doppler flow data to make an accurate clinical diagnosis. Key points Practical guide to latest advances and techniques in echocardiography In depth coverage of fundamentals and principles of echo Includes basic and advanced techniques Highly illustrated with echo images, diagrams and Doppler flow data