3-D Imaging of the Heart Chambers with C-arm CT. 3D-Bildgebung Der Herzkammern Mit C-Bogen-CT PDF Download
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Author: Kerstin Müller Publisher: ISBN: 9783832537265 Category : Languages : en Pages : 0
Book Description
Nowadays, angiography is the gold standard for the visualization of the morphology of the cardiac vasculature and cardiac chambers in the interventional suite. Up to now, high resolution 2-D X-ray images are acquired with a C-arm system in standard views and the diagnosis of the cardiologist is based on the observations in the planar X-ray images. No dynamic analysis of the cardiac chambers can be performed in 3-D. In the last years, cardiac imaging in 3-D using a C-arm system becomes of more and more interest in the interventional catheter laboratory. However, cardiac motion is a challenging problem in 3-D imaging, which leads to severe imaging artifacts in the 3-D image. Therefore, the main research goal of this thesis was the visualization and extraction of dynamic and functional parameters of the cardiac chambers in 3-D using an interventional angiographic C-arm system. In this thesis, two different approaches for cardiac chamber motion-compensated reconstruction have been developed and evaluated. The first technique addresses the visualization of the left ventricle. The second motion-compensated reconstruction approach uses volume-based motion estimation algorithms for the reconstruction of two left atrium and left ventricle - to four heart chambers. Overall, the results of this thesis highly demonstrate the feasibility of dynamic and functional cardiac chamber imaging using data from an interventional angiographic C-arm system for clinical applications.
Author: Kerstin Müller Publisher: ISBN: 9783832537265 Category : Languages : en Pages : 0
Book Description
Nowadays, angiography is the gold standard for the visualization of the morphology of the cardiac vasculature and cardiac chambers in the interventional suite. Up to now, high resolution 2-D X-ray images are acquired with a C-arm system in standard views and the diagnosis of the cardiologist is based on the observations in the planar X-ray images. No dynamic analysis of the cardiac chambers can be performed in 3-D. In the last years, cardiac imaging in 3-D using a C-arm system becomes of more and more interest in the interventional catheter laboratory. However, cardiac motion is a challenging problem in 3-D imaging, which leads to severe imaging artifacts in the 3-D image. Therefore, the main research goal of this thesis was the visualization and extraction of dynamic and functional parameters of the cardiac chambers in 3-D using an interventional angiographic C-arm system. In this thesis, two different approaches for cardiac chamber motion-compensated reconstruction have been developed and evaluated. The first technique addresses the visualization of the left ventricle. The second motion-compensated reconstruction approach uses volume-based motion estimation algorithms for the reconstruction of two left atrium and left ventricle - to four heart chambers. Overall, the results of this thesis highly demonstrate the feasibility of dynamic and functional cardiac chamber imaging using data from an interventional angiographic C-arm system for clinical applications.
Author: Brian Scott Baigrie Publisher: University of Toronto Press ISBN: 9780802074393 Category : Science Languages : en Pages : 420
Book Description
The contributors to this volume examine the historical and philosophical issues concerning the role that scientific illustration plays in the creation of scientific knowledge.
Author: Bernard Lightman Publisher: University of Chicago Press ISBN: 0226481174 Category : Science Languages : en Pages : 565
Book Description
The ideas of Charles Darwin and his fellow Victorian scientists have had an abiding effect on the modern world. But at the time The Origin of Species was published in 1859, the British public looked not to practicing scientists but to a growing group of professional writers and journalists to interpret the larger meaning of scientific theories in terms they could understand and in ways they could appreciate. Victorian Popularizers of Science focuses on this important group of men and women who wrote about science for a general audience in the second half of the nineteenth century. Bernard Lightman examines more than thirty of the most prolific, influential, and interesting popularizers of the day, investigating the dramatic lecturing techniques, vivid illustrations, and accessible literary styles they used to communicate with their audience. By focusing on a forgotten coterie of science writers, their publishers, and their public, Lightman offers new insights into the role of women in scientific inquiry, the market for scientific knowledge, tensions between religion and science, and the complexities of scientific authority in nineteenth-century Britain.
Author: T. Shinn Publisher: Springer Science & Business Media ISBN: 9400952392 Category : History Languages : en Pages : 310
Book Description
The prevailing view of scientific popularization, both within academic circles and beyond, affirms that its objectives and procedures are unrelated to tasks of cognitive development and that its pertinence is by and large restricted to the lay public. Consistent with this view, popularization is frequently portrayed as a logical and hence inescapable consequence of a culture dominated by science-based products and procedures and by a scientistic ideology. On another level, it is depicted as a quasi-political device for chan nelling the energies of the general public along predetermined paths; examples of this are the nineteenth-century Industrial Revolution and the U. S. -Soviet space race. Alternatively, scientific popularization is described as a carefully contrived plan which enables scientists or their spokesmen to allege that scientific learn ing is equitably shared by scientists and non-scientists alike. This manoeuvre is intended to weaken the claims of anti-scientific protesters that scientists monopolize knowledge as a means of sustaining their social privileges. Pop ularization is also sometimes presented as a psychological crutch. This, in an era of increasing scientific specialisation, permits the researchers involved to believe that by transcending the boundaries of their narrow fields, their endeavours assume a degree of general cognitive importance and even extra scientific relevance. Regardless of the particular thrust of these different analyses it is important to point out that all are predicated on the tacit presupposition that scientific popularization belongs essentially to the realm of non-science, or only concerns the periphery of scientific activity.
Author: Rosalyn W. Berne Publisher: CRC Press ISBN: 1410615634 Category : Technology & Engineering Languages : en Pages : 378
Book Description
No one really knows where nanotechnology is leading, what its pursuit will mean, and how it may affect human and other forms of life. Nevertheless, its research and development are moving briskly into that unknown. Nanotalk is a book of conversations and explorations with thirty five such nano-research scientists and engineers who share their ideas
Author: James Elkins Publisher: Cornell University Press ISBN: 9780801487248 Category : Art Languages : en Pages : 308
Book Description
In the domain of visual images, those of fine art form a tiny minority. This original and brilliant book calls upon art historians to look beyond their traditional subjects--painting, drawing, photography, and printmaking--to the vast array of "nonart" images, including those from science, technology, commerce, medicine, music, and archaeology. Such images, James Elkins asserts, can be as rich and expressive as any canonical painting. Using scores of illustrations as examples, he proposes a radically new way of thinking about visual analysis, one that relies on an object's own internal sense of organization.Elkins begins by demonstrating the arbitrariness of current criteria used by art historians for selecting images for study. He urges scholars to adopt, instead, the far broader criteria of the young field of image studies. After analyzing the philosophic underpinnings of this interdisciplinary field, he surveys the entire range of images, from calligraphy to mathematical graphs and abstract painting. Throughout, Elkins blends philosophic analysis with historical detail to produce a startling new sense of such basic terms as pictures, writing, and notation.
Author: Chris Schwemmer Publisher: Logos Verlag Berlin GmbH ISBN: 3832549374 Category : Medical Languages : en Pages : 157
Book Description
Cardiovascular disease has become the number one cause of death worldwide. For the diagnosis and therapy of coronary artery disease, interventional C-arm-based fluoroscopy is an imaging method of choice. While these C-arm systems are also capable of rotating around the patient and thus allow a CT-like 3-D image reconstruction, their long rotation time of about five seconds leads to strong motion artefacts in 3-D coronary artery imaging. In this work, a novel method is introduced that is based on a 2-D-2-D image registration algorithm. It is embedded in an iterative algorithm for motion estimation and compensation and does not require any complex segmentation or user interaction. It is thus fully automatic, which is a very desirable feature for interventional applications. The method is evaluated on simulated and human clinical data. Overall, it could be shown that the method can be successfully applied to a large set of clinical data without user interaction or parameter changes, and with a high robustness against initial 3-D image quality, while delivering results that are at least up to the current state of the art, and better in many cases.
Author: Jessica Evans Publisher: SAGE ISBN: 9780761962472 Category : Business & Economics Languages : en Pages : 512
Book Description
" This collection of classic essays in the study of visual culture fills a major gap in this new and expanding intellectual field. Its major strength is its insistence on the importance of three central aspects of the study of visual culture: the sign, the institution and the viewing subject. It will provide readers, teachers and students with an essential text in visual and cultural studies." - "Janet Wolff, University of Rochester""" Visual Culture: The Reader provides an invaluable resource of over 30 key statements from a wide range of disciplines. Although underpinned by a focus on contemporary cultural theory, this reader puts issues of visual culture and the rhetoric of the image at centre stage. Divided into three parts, The Culture of the Visual, Regulating Photographic Meaning, Looking and Subjectivity, this reader enables students to make hitherto unmade connections across art, film and photography history and theory, semiotics, history, semiotics and communications, media studies, and cultural theory. The key statements are from the work of: Visual Culture: The Reader sets the agenda for the study of Visual Culture and will be an essential sourcebook for researchers and students alike.This is the reader for the module "The Image and Visual Culture" (D850) - part of The Open University Masters in Social Sciences Programme.
Author: Kerstin Müller
Author: Kerstin Müller
Author: James Elkins
Author: Brian Scott Baigrie
Author: Bernard Lightman
Author: T. Shinn
Author: Rosalyn W. Berne
Author: James Elkins
Author: Chris Schwemmer
Author: Ann Thomas
Author: Jessica Evans