Download or read book valuation de la fonction diastolique en IRM written by Nassar Namane and published by . This book was released on 2015 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: Objectifs Déterminer les valeurs normales des dimensions de l’oreillette gauche (OG) et des paramètres de la courbe de remplissage du ventricule gauche (VG) en fonction de l’âge et du sexe. Matériels et méthodes Dans cette étude prospective unicentrique, 173 volontaires sains ont été inclus et divisés équitablement en sept groupes allant de 18 à 70 ans. Tous les volontaires ont passé une IRM cardiaque avec des séquences CINE en coupes grand axe et petit axe du VG. Les images ont été analysées afin de déterminer la planimétrie et la volumétrie de l’OG par la méthode biplan, ainsi que les paramètres de la courbe de remplissage du VG comprenant les pics de remplissage rapide et tardif (PRR et PRT respectivement). Résultats Le PRR diminuait significativement avec l’âge alors que le PRT augmentait significativement. Ainsi, le rapport PRR/PRT décroissait significativement et progressivement avec l’âge et passait de 2.2±0.5 chez les volontaires les plus jeunes à 0.8±0.3 chez les plus âgés. La taille de l’OG ne se modifiait pas de façon significative avec l’âge et la moyenne était de 22.0±4.4 cm2 et 36.3±10.4 mL/m2 dans la population globale de l’étude. Des différences significatives entre les sexes ont été mises en évidence pour la plupart des paramètres étudiés. Conclusion Chez les volontaires sains, la taille de l’OG reste stable avec l’âge pendant que les paramètres de la courbe de remplissage changent significativement. Nous avons fourni des valeurs de références an fonction de l’âge et du sexe, ce qui peut être utile pour une application en routine.
Download or read book IRM cardiaque dans la cardiomyopathie hypertrophique written by Anthony De Aquino and published by . This book was released on 2020 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book valuation des param tres fonctionnels du ventricule droit en IRM cardiaque written by Jérôme Caudron and published by . This book was released on 2010 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Objectifs : 1.Évaluer la variabilité de la mesure des paramètres fonctionnels du ventricule droit (VD) en IRM cardiaquechez les patients atteints d'une cardiopathie acquise, avec un accent particulier sur l'effet de l'expérience de l'observateur et des étapes du post-traitement. 2.Évaluer la précision diagnostique et la variabilité de la mesure de 3 paramètres semi-quantitatifs comme outil d'évaluation de la fonction systolique du VD : TAPSE = Excursion systolique du plan de l'anneau tricuspide ; RVFS = Fraction de raccourcissement du VD; RVFAC = Fraction de changement de surface du VD. Matériels et méthodes : Soixante patients consécutifs atteints de cardiopathie acquise ayant une indication clinique à la réalisation d'une IRM cardiaque ont été inclus de façon prospective. Les volumes, fraction d'éjection et masses VD et VG ont été calculés avec des séquences CINE de type balanced steady state free precession. Les paramètres semi quantitatifs ont été calculés sur une coupe ciné 4-cavités. Toutes les analyses ont été effectuées 2 fois par 3 observateurs ayant des niveaux d'expérience différents en IRM cardiaque. La variabilité intra et inter observateur a été évaluée par la méthode de Bland-Altman, le coefficient de variation et le coefficient de corrélation intraclasse. L'effet des étapes de post-traitement suivantes sur la variabilité des paramètres quantitatifs a été évalué: expérience des observateurs, choix des coupes basale et apicale, choix de la phase télésystolique, et contourage de l'observateur. Une corrélation entre les paramètres semi-quantitatifs et la FEVD et une analyse Receiver Operating Characteristic (ROC) ont été réalisés pour chaque paramètre semi-quantitatif. Résultats : Le temps de segmentation moyen variait de 9.8 à 19.0 min pour VD et de 6.4 à 9.2 min pour le VG. La variabilité de la mesure des paramètres fonctionnels du VD en IRM était fortement influencée par l'expérience préalable de l'observateur, le choix de la coupe basale et le contourage de l'observateur. L'évaluation de la fonction VD en IRM restait 2 fois plus longue et 2 à 3 fois plus variable que pour le VG. La corrélation entre le RVFAC et la FEVD était bonne pour tous les observateurs et peu dépendante de l'expérience préalable de l'observateur. Au contraire, le RVFS et le TAPSE étaient moins corrélés avec la FEVD et dépendants de l'expérience préalable. L'analyse ROC a démontré qu'un RVFAC
Download or read book Capillary Fluid Exchange written by Joshua Scallan and published by Morgan & Claypool Publishers. This book was released on 2010 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: The partition of fluid between the vascular and interstitial compartments is regulated by forces (hydrostatic and oncotic) operating across the microvascular walls and the surface areas of permeable structures comprising the endothelial barrier to fluid and solute exchange, as well as within the extracellular matrix and lymphatics. In addition to its role in the regulation of vascular volume, transcapillary fluid filtration also allows for continuous turnover of water bathing tissue cells, providing the medium for diffusional flux of oxygen and nutrients required for cellular metabolism and removal of metabolic byproducts. Transendothelial volume flow has also been shown to influence vascular smooth muscle tone in arterioles, hydraulic conductivity in capillaries, and neutrophil transmigration across postcapillary venules, while the flow of this filtrate through the interstitial spaces functions to modify the activities of parenchymal, resident tissue, and metastasizing tumor cells. Likewise, the flow of lymph, which is driven by capillary filtration, is important for the transport of immune and tumor cells, antigen delivery to lymph nodes, and for return of filtered fluid and extravasated proteins to the blood. Given this background, the aims of this treatise are to summarize our current understanding of the factors involved in the regulation of transcapillary fluid movement, how fluid movements across the endothelial barrier and through the interstitium and lymphatic vessels influence cell function and behavior, and the pathophysiology of edema formation. Table of Contents: Fluid Movement Across the Endothelial Barrier / The Interstitium / The Lymphatic Vasculature / Pathophysiology of Edema Formation
Download or read book Magnetic Resonance Imaging of Congenital Heart Disease written by Mushabbar A. Syed and published by Springer Nature. This book was released on 2023-09-26 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: This heavily updated textbook focuses on the use of cardiac magnetic resonance (CMR) imaging in pediatric and adult patients with congenital heart disease. Over past two decades, CMR has come to occupy an ever more important place in the assessment and management of patients with congenital heart defects (CHD) and other cardiovascular disorders. The modality offers an ever-expanding amount of information about the heart and circulation, provides outstanding images of cardiovascular morphology and function, is increasingly being used to detect pathologic fibrosis, and has an expanding role in the assessment of myocardial viability. Magnetic Resonance Imaging of Congenital Heart Disease is an excellent foundation for any reader not familiar with the field whether they are imagers or clinicians who deal with cardiovascular disease. It also describes the technical details of MRI techniques to help the clinician understand the most important elements of CMR in assessing and managing their patients. In creating the book, the editors have assembled a world-renowned panel of contributors to review the use of CMR in CHD and make it accessible to those working in the field and to those who use the information derived from CMR in their clinical practice.
Download or read book An Introduction to the Principles of Medical Imaging written by Chris Guy and published by . This book was released on 2005 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: - Covers the entire field of medical imaging at an introductory level - Provides a brief description of the clinical context of imaging for students with an engineering background - Provides a descriptive, non-mathematical background to the physics underpinning imaging for students with a medical background - Includes exercises and problems at the end of every chapter to test readers' understanding of the material
Download or read book Trait d imagerie m dicale Volume 1 2e d written by NAHUM Henri and published by Lavoisier. This book was released on 2013-12-12 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt: Exhaustive et très richement illustrée, cette deuxième édition entièrement en couleur aborde de manière toujours claire et précise les méthodes et les résultats de l’imagerie de l’ensemble du corps humain. Chaque section présente de façon systématique : Les différentes techniques d’imagerie disponibles, des plus classiques au plus innovantes. Les principales stratégies diagnostiques pour toutes les pathologies de la région explorée. L’ensemble des chapitres a été actualisé et les chapitres de neurocardiologie et d'imagerie cardiovasculaire ont été totalement réécrits pour tenir compte des nouveaux apports de l’imagerie et des plus récents développements technologiques.
Download or read book The Right Heart written by Sean P. Gaine and published by Springer. This book was released on 2014-05-12 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: The heart and lung are intricately linked. When the heart is affected by disease, the lungs will often show some related pathological or clinical conditions and vice versa. Pulmonary heart disease is by definition a condition when the lungs cause the heart to fail. The left ventricle in combination with the other structures in the “left heart” pumps blood throughout the body. The right ventricle (and structures of the “right heart”) pumps blood to the lungs where it is oxygenated and returned to the left heart for distribution. In normal circumstances, the right heart pumps blood into the lungs without any resistance. The lungs usually have minimal pressure and the right heart easily pumps blood through. However when there is lung disease present, like emphysema, chronic obstructive lung disease (COPD) or pulmonary hypertension- the small blood vessels become very stiff and rigid. The right ventricle is no longer able to push blood into the lungs and eventually fails. This is known as pulmonary heart disease. Pulmonary heart disease is also known as right heart failure or cor pulmonale. The chief cause of right heart failure is the increase in blood pressure in the lungs (pulmonary artery).
Download or read book Cumulated Index Medicus written by and published by . This book was released on 1995 with total page 1548 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Strategies to Reduce Sodium Intake in the United States written by Institute of Medicine and published by National Academies Press. This book was released on 2010-11-14 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reducing the intake of sodium is an important public health goal for Americans. Since the 1970s, an array of public health interventions and national dietary guidelines has sought to reduce sodium intake. However, the U.S. population still consumes more sodium than is recommended, placing individuals at risk for diseases related to elevated blood pressure. Strategies to Reduce Sodium Intake in the United States evaluates and makes recommendations about strategies that could be implemented to reduce dietary sodium intake to levels recommended by the Dietary Guidelines for Americans. The book reviews past and ongoing efforts to reduce the sodium content of the food supply and to motivate consumers to change behavior. Based on past lessons learned, the book makes recommendations for future initiatives. It is an excellent resource for federal and state public health officials, the processed food and food service industries, health care professionals, consumer advocacy groups, and academic researchers.
Download or read book Color Atlas of Vascular Tumors and Vascular Malformations written by Odile Enjolras and published by Cambridge University Press. This book was released on 2007-04-02 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hemangiomas and superficial vascular malformations are disfiguring birthmarks that can occur over 65% of a child's body. This atlas will focus on the classification, multidisciplinary approach, recognition and identification, and treatment options for this class of pathology. Vascular malformations, composed of malformed vessels, never regress and sometimes expand rapidly. They occur in any body part including viscera. They cause cosmetic problems, functional disability and can be life threatening and require radiologic imaging and pathology to recognize and perform differential diagnosis on various vascular anomalies. In addition, new techniques, including molecular biology procedures, have evolved allowing less invasive and a more effective approach to diagnosis and treatment.
Download or read book Ventricular Wall Motion written by Ulrich Sigwart and published by Thieme-Stratton Corporation. This book was released on 1984 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cardiac Surgery written by Siavosh Khonsari and published by Lippincott Williams & Wilkins. This book was released on 2008 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: A practical, heavily illustrated guide to procedures in cardiac surgery, this updated edition covers acquired and congenital diseases and includes surgical anatomy, surgical exposures, and step-by-step procedural details. Also included are updates in minimally invasive surgery and vascular and endovascular surgery.
Download or read book Acute Stroke Treatment written by Julien Bogousslavsky and published by CRC Press. This book was released on 1997-09-04 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Owing to the increased interest in brain ischemia and the new therapeutic options from pharmaceutical companies for the treatment of acute stroke, Professor Julien Bogousslavsky, one of the world's stroke experts, has revised his best-selling book. It is the emergence of huge possibilities in the management of stroke - ultra-early diagnosis, intensive care, surgical and other interventional therapies, thrombolysis, anti-ischemic drugs and prevention of immediate recurrence - which necessiates this timely update.
Download or read book Radiology of the small intestine written by Pierre Bret and published by Springer Science & Business Media. This book was released on 2013-12-11 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is a tradition behind the current radiologic examination of the small bowel. Many of the great names in gastrointestinal radiology have established their reputations on the basis of their work in the small bowel. This is an area which is assuming ever greater importance for radiologists as its mucosal surface continues to elude the endos copist. Moreover, it is an aspect of radiology which calls for the greatest technical and interpretative skill. It is a great pleasure to welcome the English language version of this beautiful work on Radiology of the Small Intestine. English speaking physicians are frequently not as familiar with the large body of work published in French as they should be. Tant pis ! Dr. Bret and his co-workers have been pioneers in the pursuit of excellence in gastrointestinal radiology. During all the years that I have been involved in this field, I have admired their work.
Download or read book Testosterone Deficiency in Men written by Hugh Jones and published by Oxford University Press, USA. This book was released on 2008-09-25 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a background of essential knowledge on testosterone deficiency in men, including diagnosis and treatment. It also explores the associations of testosterone deficiency with organ systems and their diseases e.g diabetes, osteoporosis.
Download or read book Stroke in Childhood written by Paediatric Stroke Working Group and published by Royal College of Physicians. This book was released on 2004 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stroke occuring in childhood although less common, presents serious challenges. This guideline is based on the expertise of a multidisciplinary working group and include the views of patients, parents and families.
