Perfusion imaging

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  • From the early 1970s to mid-1990s, positron emission tomography (PET) as a diagnostic imaging modality had been for the most part used in experimental research. Clinical PET started only a decade ago. 82Rb-RbCl and 18F-Fluorodeoxyglucose were approved by the U.S. Food and Drug administration in 1989 and 1994, respectively, for clinical PET imaging. Reimbursement by Medicare was approved in 1995 for 82Rb-PET myocardial perfusion imaging and for 18F-FDG PET for various oncologic indications in 1999. Currently several more PET procedures are covered for reimbursement....

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  • Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: Research Article Rigid Registration of Renal Perfusion Images Using a Neurobiology-Based Visual Saliency Model

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  • Cerebrovascular diseases have an enormous and increasing impact on societies: they rank among the leading causes of death, are often associated with chronic handicap, and cause high costs for primary treatment, rehabilitation and chronic care. The advent of treatment options such as reperfusion therapies and, to a lesser degree, neuroprotective strategies on the one hand, and growing means to enhance rehabilitation and functional plasticity on the other hand, urges physicians to diagnose stroke subtypes as early and precisely as possible.

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  • Noninvasive cardiac imaging is an integral part of the practice of current clinical cardiology. During the past three decades a number of distinctly different noninvasive imaging techniques of the heart, such as radionuclide imaging, echocardiography, magnetic resonance imaging, and X-ray computed tomography have been developed. Remarkable progress has been made by each of these technologies in terms of technical advances, clinical procedures, and clinical applications/indications.

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  • The goals of experimental neuroscience research are fundamentally to gain mechanistic understanding of the pathology of disease in order to identify appropriate targets for potential pharmacological intervention and evaluation of putative therapies. With the advances in gene manipulation and transgene technologies, we have unprecedented ability to generate animal models of disease that more closely mimic the clinical conditions. Noninvasive techniques capable of investigating altered pathophysiologies are now of paramount importance.

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  • The number of diagnostic nuclear medicine procedures has grown in the fi rst few years of the new century. Nuclear cardiology has diversifi ed, stimulating development of new equipment and imaging protocols. Gated myocardial perfusion imaging completed with quantifi cation is now a standard procedure. Faster computers have led to improved reconstruction techniques, higher image quality, increased patient throughput and more automated acquisition and processing protocols.

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  • Noninvasive Imaging of Myocardial Ischemia provides a comprehensive discussion and review of the noninvasive myocardial imaging techniques that are currently available to detect myocardial ischemia and infarction. Topics covered include echocardiography, cardiac magnetic resonance imaging, myocardial perfusion scintigraphy, positron emission tomography, and computed tomography.

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  • In an era of spectacular medical advances, it is easy to become immune to the announcement of new “breakthroughs”. This in no way lessens the remarkable achievements of diagnostic imaging over the last few years in which the field of Nuclear Medicine has shared. To the outsider the specialty of Nuclear Medicine can appear confusing and esoteric since it operates in a world of invisible radioactive emissions, nuclear decay charts and obscure elements.

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  • Lung protection strategy permising hypercapnia induces the development of cranial hyperemia and hypertension. On the other hand, “aggressive” ventilation with high tidal volume may aggravate lung injury and provoke ventilator-associated lung damage(9). In mechanical ventilation treatment, PEEP improves oxygenation by recruitment of atelectatic alveolar units, improving FRC and preventing atelectrauma. Also it may have detrimental neurologic effects in certain clinical circumstances(10).

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  • We have compiled and written this textbook to highlight the clinical indications and applications of cardiac magnetic resonance imaging (MRI). Over the past few decades, MRI has become an essential element of decision making for many medical specialties. However, though cardiovascular diseases are a major cause of morbidity and mortality throughout the world, MRI of the heart and great vessels has experienced relatively slow acceptance.

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Cerebral misery perfusion diagnosed using hypercapnic blood-oxygenation-level-dependent contrast functional magnetic resonance imaging: a case report...

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  • In utero, the placenta is the main site for gas exchange for the developing foetus and the blood flow to the foetal lung is minimal. Blood from the right ventricle bypasses the lungs and passes directly from the pulmonary artery to the aorta via a foetal vessel called the arterial duct. After birth, a number of changes occur in transition from the foetal to the newborn circulation including expansion of the lungs (which reduces pulmonary vascular resistance) and closure of the arterial duct, so that blood now perfuses the lungs.

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  • AS RECENTLY AS a few years ago, many nuclear medicine physicians would have taken the position that Cardiovascular Nuclear Medicine is now a static field. Similar perhaps in many ways to bone imaging, they would have suggested that all that is left to do is to make some detailed refinements of the techniques, but the big discoveries had been made. This issue and the second part of this issue of Seminars in Nuclear Medicine will certainly discredit that point of view. There are many, many new developments in this field....

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  • (BQ) Part 1 book "Clinical cardiac MRI" presents the following contents: Cardiac MRI physics, MR contrast agents for cardiac imaging, practical set up, cardiac anatomy, cardiovascular MR imaging planes and segmentation, cardiac function, myocardial perfusion, ischemic heart disease, heart muscle diseases.

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  • EURASIP Journal on Applied Signal Processing 2003:5, 437–448 c 2003 Hindawi Publishing Corporation Dynamic Chest Image Analysis: Model-Based Perfusion Analysis in Dynamic Pulmonary Imaging Jianming Liang Turku Centre for Computer Science, DataCity, Lemmink¨ isenkatu 14 A, 20520 Turku, Finland a Email: ¨ Timo Jarvi Turku Centre for Computer Science, DataCity, Lemmink¨ isenkatu 14 A, 20520 Turku, Finland a Email: Aaro Kiuru Department of Diagnostic Radiology, Turku University, 20520 Turku, Finland Email: aaro.kiuru@tyks.

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