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Head and neck ultrasound is a standard radiological examination performed at most hospitals. It is an important topic and all specialist registrars in radiology will need to learn how to scan the organs and structures of the head and neck. This book covers normal anatomy and provides a comprehensive account of pathological processes in all of the head and neck structures, including the vasculature. With excellent diagrams and high quality images, it illustrates the key technical and diagnostic steps needed by both trainee and established radiographers or radiologists. It provides clear guidance on scanning technique, potential pitfalls and common problems, and how to achieve optimum image quality. Key topics include: normal anatomy of the head and neck region, practical scanning technique, the salivary glands, the thyroid and parathyroid, lymph nodes, cystic masses, the larynx, what the surgeon needs to know and why, biopsy techniques and basic vascular ultrasound.
This book covers normal anatomy and provides a comprehensive account of pathological processes in all the head and neck structures.
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Get swept up in the beauty of our universe with this collection of spectacular images taken by today's most powerful telescopes and orbiting probes. These breathtaking photographs both enthrall and inform as they capture the many wonders of outer space. Moving from the planets in our own solar system, to the Milky Way, to the far ends of the universe, it features images taken by Earth's largest telescopes--including the Hubble, Herschel, and Keck telescopes in Hawaii--along with those sent back by spacecraft such as Cassini and New Horizons. Gaze at merging galaxies, overlapping galaxies, and galaxies undergoing huge bursts of star formation, as well as the most distant objects we are able to glimpse. The images, which come from agencies such as NASA and the European Southern Observatory in Chile, all include commentary by an expert astronomer who explains what we are looking at and provides technical information on how the photo was achieved.
Get swept up in the beauty of our universe with this collection of spectacular images taken by today's most powerful telescopes and orbiting probes. These breathtaking photographs both enthrall and inform as they reveal the many wonders of outer space. Moving from the planets in our own solar system, to the Milky Way, to the far ends of the universe, this stunning volume features images taken by Earth's largest telescopes--including the Hubble, Herschel, and Keck telescopes in Hawaii--along with those sent back by spacecraft such as Cassini and New Horizons. Gaze at merging galaxies, overlapping galaxies, and galaxies undergoing huge bursts of star formation, as well as the most distant objects we are able to glimpse. The images, which come from agencies such as NASA and the European Southern Observatory in Chile, all include commentary by an expert astronomer who explains what we are looking at and provides technical information on how the photo was achieved. New in paperback and retitled edition of ASTROPHOTOGRAPHY.
Thoroughly revised and updated introduction to past and present cosmological theory.
Rhodri Evans tells the story of what we know about the universe, from Jacobus Kapteyn’s Island universe at the turn of the 20th Century, and the discovery by Hubble that the nebulae were external to our own galaxy, through Gamow’s early work on the cosmic microwave background (CMB) and its subsequent discovery by Penzias and Wilson, to modern day satellite-lead CMB research. Research results from the ground-based experiments DASI, BOOMERANG, and satellite missions COBE, WMAP and Planck are explained and interpreted to show how our current picture of the universe was arrived at, and the author looks at the future of CMB research and what we still need to learn. This account is enlivened by Dr Rhodri Evans' personal connections to the characters and places in the story.
This text provides a unique view of global inequities in health status and health sytems. Emphasizing socioeconomic conditions, it combines chapters on conceptual and measurement issues with case studies from around the world.