This book presents the latest information on using echography to diagnose lesions and diseases of the eye and orbit. This edition is fully updated, with a new chapter on orbital disease and coverage of the 20-MHz probe for posterior segment imaging. It provides a comprehensive review of the basic screening procedures, descriptions of the indications for ultrasound, and guidance on how to reach an accurate diagnosis of both common and rare clinical problems in all areas of the eye. Features: * Techniques for diagnosing diseases of the retina, choroid, vitreous, anterior segment, optic nerve, extraocular muscles, and more * More than 550 high-quality images, including an expanded collection of anterior segment images, that aid the comprehension of pathology and disease processes * Three-dimensional schematics demonstrating sound beam and probe positions on the eye * Extensive lists of references for pursuing topics in depth Ophthalmic Ultrasound: A Diagnostic Atlas will provide an invaluable reference for ophthalmologists, ultrasonographers, and radiologists.</p
This book offers a unique and focused study of the use of ultrasound during the first trimester, a critical time in a fetus' development. It includes basic examination guidelines as well as cutting-edge ultrasound modalities, including Doppler and three-dimensional ultrasound, for the period immediately preceding conception through early embryology. Beginning with a discussion of the safety and efficacy of diagnostic ultrasound and the use of this modality for the evaluation and treatment of infertility, recognized experts in the field explore conditions that may interfere with normal conception or development, including maternal diseases that would benefit from early scanning, elements of teratology, multiple gestations, ectopic pregnancy, gestational trophoblastic disease, fetal anomalies and invasive procedures in the first trimester. Numerous illustrations and figures are provided to serve as aids for understanding key concepts.First-Trimester Ultrasound is a valuable resource for many, in or after training, in obstetrics and gynecology, radiology, emergency medicine, family medicine and genetics.
First published in French in 1998, revised in 2010, and appearing here in English for the first time, Michel Chion'sSound addresses the philosophical, interpretive, and practical questions that inform our encounters with sound. Chion considers how cultural institutions privilege some sounds above others and how spurious distinctions between noise and sound guide the ways we hear and value certain sounds. He critiques the tenacious tendency to understand sounds in relation to their sources and advocates "acousmatic" listening-listening without visual access to a sound's cause-in order to disentangle ourselves from auditory habits and prejudices. Yet sound can no more be reduced to mere perceptual phenomena than encapsulated in the sciences of acoustics and physiology. As Chion reminds us and explores in depth, a wide range of linguistic, sensory, cultural, institutional, and media- and technologically-specific factors interact with and shape sonic experiences. Interrogating these interactions, Chion stimulates us to think about how we might open our ears to new sounds, to become more nuanced and informed listeners, and to more fully understand the links between how we hear and what we do.