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This book explains the challenges and advancements in cutting precise cylindrical shapes on difficult materials through spark erosion. Titled'Spin while Burn,'it addresses the drawbacks associated with this process, including unsatisfactory surface finish and limited productivity. Despite utilizing advanced computing and statistical optimization methods, achieving the ideal balance between material removal rate (MRR) and surface quality remains elusive. In response, the book introduces a hybrid ultrasonic-assisted approach in the wire electrical discharge turning (WEDT) process. By integrating a rotating workpiece with ultrasonic vibration, the authors evaluate its impact on MRR and surface finish. Through meticulous design experiments and statistical analysis, they explore various cutting parameters and machining paths. The book highlights the characterization of machined surfaces through elemental analysis and surface morphology evaluations. The results demonstrate the positiveeffects of integrating ultrasonic vibration into WEDT, even without optimized ultrasonic parameters. By reducing electrode wire debris and employing multi-objective parameter optimization using the genetic algorithm, significant improvements are achieved in MRR and surface roughness compared to conventional WEDT.'Spin while Burn'consists of five chapters, delving into the challenges, history, principles, performance, and future perspectives of the Spin-while-Burn process in manufacturing. This comprehensive book offers valuable insights into enhancing surface quality and productivity in the cutting of precise cylindrical shapes on challenging materials through spark erosion.

This is the seventh edition of a long-selling book (first edition 1991) that was translated into Italian, French, Chinese, Portuguese, Spanish, English. In the last ten years, stress echocardiography has exploded in its breadth and variety of applications. From a one-fits-all approach (wall motion by 2D-echo in the patient with known or suspected coronary artery disease), the field has progressed to an omnivorous, next-generation laboratory employing a variety of technologies (from M-Mode to 2D, from pulsed, continuous, color and tissue Doppler to lung ultrasound) on patients covering the entire spectrum of severity (from elite athletes to patients with end-stage heart failure) and ages (from children with congenital heart disease to the elderly with aortic stenosis). This new edition is enriched with over 300 figures, 150 tables and video-clips. In a societal and economic climate of increasing pressure for appropriate, justified and optimized imaging, stress echocardiography offers the great advantages of being radiation-free, relatively low cost, with minimal environmental impact, and with a staggering versatility: we can get more (information) with less (cost and risk). The volume will be a tremendous aid to current best practices for all health operators who intend to use stress echocardiography and ultrasound for diagnosis and guidance of optimal management in their patients.

Ultrasound diagnostics is now a widely used tool in patient care. It allows the clinical user to identify causes of disease quickly and directly. This didactically homogeneous standard work provides a comprehensive overview of the current state of vascular diagnostics of the brain-supplying arteries, including the associated clinical aspects. Techniques not relevant in everyday life have been deliberately omitted.The modular structure enables rapid orientation and ensures excellent handling. Beginners can easily become familiar with the systematics of Doppler and duplex sonography with the help of the methodological section. Experienced users can place their sonographic findings together with other imaging examinations in the clinical context of cerebrovascular diseases. Numerous case examples serve as practical learning aids.This book is a translation of an original German edition. The translation was done with the help of artificial intelligence(machine translation by the service DeepL.com). A subsequent human revision was done primarily in terms of content, so that the book will read stylistically differently from a conventional translation.

Performing any diagnostic test in medicine is always a matter of trying to get the condition of the patient diagnosed properly with the least effort, exposure, discomfort and at the same time with the lowest possible error probability.Pre-test probability is helpful but often imprecise, effectively overestimating the patient's risk profile. In a broader prevention objective, the phases of a disease, its onset, progression, and complications must be taken into account. The negative predictive value, which is so important, has in turn its main limitation in identifying the healthy patient, that is, the one who does not belong to any cluster of patients in which we would act in terms of prevention. In coronary syndromes, the goal is instead to evaluate coronary heart disease, from mild to more extensive and significant forms. For this purpose, it is necessary to use parameters that investigate different and complementary aspects: stenosis, ischemia, the morphology ofthe atherosclerotic plaque, metabolic processes, in particular vitality and apoptosis, the presence of inflammatory processes. The possibility, already present thanks to Hybrid Imaging, of'joining'exams that study different aspects, will allow the patient to be increasingly characterized not only from a diagnostic point of view but also from a prognostic and personalized therapeutic choice.

Many significant achievements in new ultrasound technologies to measure bone and models to elucidate the interaction and the propagation of ultrasonic waves in complex bone structures have been reported over the past ten years. Impaired bone remodeling affects not only the trabecular compartment but also the cortical one. Despite the crucial contribution of the cortical structure to the whole bone mechanical competence, cortical bone was understudied for a long time. A paradigm shift occurred around 2010, with a special focus placed on the importance of cortical bone. This has sparkled a great deal of interest in new ultrasound techniques to assess cortical bone. While our book ‘Bone Quantitative Ultrasound'published in 2011 emphasized techniques to measure trabecular bone, this new book is devoted for a large part to the technologies introduced recently to measure cortical bone. These include resonant ultrasound spectroscopy, guided waves, scattering, and pulse-echo and tomographyimaging techniques. Instrumentation, signal processing techniques and models used are detailed. Importantly, the data accumulated in recent years such as anisotropic stiffness, elastic engineering moduli, compression and shear wave speeds of cortical bones from various skeletal sites are presented comprehensively. A few chapters deal with the recent developments achieved in quantitative ultrasound of trabecular bone. These include (i) scattering-based approaches and their application to measure skeletal sites such as the spine and proximal femur and (ii) approaches exploiting the poro-elastic nature of bone. While bone fragility and osteoporosis are still the main motivation for developing bone QUS, this Book also includes chapters reporting ultrasound techniques developed for other applications of high interest such as 3-D imaging of the spine, assessment of implant stability and transcranial brain imaging. This book, together with the book ‘Bone Quantitative Ultrasound'published in 2011 will provide a comprehensive overview of the methods and principles used in bone quantitative ultrasound and will be a benchmark for all novice or experienced researchers in the field. The book will offer recent experimental results and theoretical concepts developed so far and would be intended for researchers, graduate or undergraduate students, engineers, and clinicians who are involved in the field. The book should be considered as a complement to the first book publisher in 2011, rather than a second edition, in the sense that basic notions already presented in the first book are not repeated.

This book highlights the theories and applications of quantum acoustical imaging which can be considered as a part of quantum technology. It starts with the theories and background principles of this new field in depth.The examples of some present forms of available acoustical imaging which can be considered as quantum acoustical imaging are given such as ultrasonics in the terahertz range with the use of optical transducers for producing terahertz ultrasound and the theory of sound amplification by stimulated emission of radiation (SASER) and principles based on terahertz ultrasound. The SASER transducer is described, followed by the applications of SASER.Other examples of quantum acoustical imaging are the atomic force acoustic microscope (AFAM) and the ultrasonic force microscope. The author's personal inventions of quantum acoustical imaging are a system based on phonons entanglement based on the quantum property of phonons entanglement and the quantum ultrasound diffraction tomography system.The advantage of quantum acoustical imaging is the defeat of the classical Rayleigh image resolution limit. An unique feature of this book is that it has gone in depth into the quantum theories of acoustical imaging such as phonons entanglement,,superposition principle and the application of transport theory.Quantum microphones and quantum transducers are also introduced with a final chapter on quantum image processing.

Die Sonographie zählt zu den zentralen Untersuchungstechniken in der Urologie. Ihre Vorteile liegen auf der Hand. Sie ist kostengünstig, schnell verfügbar, praktisch universell einsetzbar und nicht strahlenbelastend.Der vorliegende Atlas ist Lehrbuch und Nachschlagewerk zugleich. Er liefert dem klinisch tätigen Urologen einen reichen Fundus von über 700 Referenzaufnahmen häufiger Befunde und interessanter Raritäten. Neben technischen Grundlagen der Sonographie sowie praktischen Tipps zur Vermeidung von Fehlbefunden finden Sie umfangreiche Informationen zur sonographischen Diagnostik benigner und maligner urologischer Erkrankungen. Auf Normbefunde und Normvarianten wird zum besseren Verständnis gezielt eingegangen. Aktuelle Forschungsergebnisse und differenzialdiagnostische Tabellen zur schnellen Kontrolle der gestellten Diagnose runden das Werk ab. Die Auswahl der Bilder folgte höchsten Qualitätsansprüchen. Komplexe Befunde werden zusätzlich durch aussagekräftige Graphiken veranschaulicht.„Ultraschall in der Urologie“, ein unverzichtbarer Begleiter für alle, die sich mit der sonographischen Diagnostik des Urogenitaltrakts befassen.

This book aims to provide reader an overview of clinical applications of contrast-enhanced ultrasound in hepatic neoplasms diagnosis. Ultrasound images and pathological results of different hepatic neoplasms are introduced in the chapters, including benign liver tumors, malignant liver tumors, hepatic carcinoma, intrahepatic cholangiocarcinoma, rare liver benign and malignant neoplasms, regenerative nodules, inflammatory pseudotumor, parasite liver lesions, and hepatitis peliosis, etc. The combination of ultrasound findings with final histopathological results then discover the potential mechanical of contrast enhancement changes. With the development of ultrasound technology and widely application of ultrasound contrast agents (USCA) in recent decades, contrast-specific imaging modalities have been developed in combination with USCA and a low mechanical index (MI), allowing continuous real-time grey scale imaging. The updated contrast-specific software for liver diseases and hepatic tumors diagnosis has also been described described in detail. With high-resolution contrast ultrasound images during arterial phase, portal venous phase and late phase, author wants to show the whole dynamic wash-in and wash-out process of the different focal liver lesions.This book is an invaluable resource for radiologists, hepatologists and oncologists in their everyday clinical practice.

As a hot topic in ultrasound medicine, peripheral nerve ultrasound has its wide applications in clinical field. This book firstly introduces the anatomy of peripheral nerves, method and normal sonograms for peripheral nerve scanning. In the following chapters, common and typical cases of peripheral nerves diseases are presented with useful clinical information and relevant data, for example, ultrasound, MRI, clinical operation and pathology results. At the end of each disease, video with detailed explanation of diagnostic procedure and 2-3 bullet points in practical differential diagnosis are included to help readers taking notes. This book will be a valuable reference for physicians in ultrasound, anesthetists, neurologists, pain specialists, and practitioners interested in related field.

This book systematically introduces readers to the fundamental physics and a broad range of applications of acoustic levitation, one of the most promising techniques for the container-free handling of small solid particles and liquid droplets. As it does away with the need for solid walls and can easily be incorporated into analysis instruments, acoustic levitation has attracted considerable research interest in many fields, from fluid physics to material science. The book offers a comprehensive overview of acoustic levitation, including the history of acoustic radiation force; the design and development of acoustic levitators; the technology's applications, ranging from drop dynamics studies to bio/chemical analysis; and the insightful perspectives that the technique provides. It also discusses the latest advances in the field, from experiments to numerical simulations. As such, the book provides readers with a clearer understanding of acoustic levitation, while alsostimulating new research areas for scientists and engineers in physics, chemistry, biology, medicine and other related fields.

Das praxisorientierte und reich bebilderte Buch gibt eine anschauliche Einführung in die Duplexsonographie der Beinvenen und ist zugleich als detailliertes Nachschlagewerk für jeden Arzt interessant, der Patienten mit Venenerkrankungen betreut. Die 3. Auflage wurde durchgängig aktualisiert und ergänzt; neue Themen sind z.B. die Physiologie und Diagnostik der pelvinen Refluxpunkte, Aktualisierung der Stadieneinteilungen der Varikose, weitere Anwendungen der Duplexsonographie bei der Therapie der Varikose. Komplett neu ist ein Kapitel zur Rolle der Duplexsonographie als Entscheidungshilfe bei der patientenorientierten Therapiewahl, der venöse Zugang für die intraluminalen Therapietechniken wird ausführlich beschrieben. Umfangreiches Bild- und Videomaterial in elektronischer Form, das über http://extras.springer.com zugänglich ist, ergänzt die Illustrationen im Buch.

Liposuction is currently the number one aesthetic surgical procedure performed by plastic surgeons in the United States and Americans spend more money on liposuction than on any other aesthetic surgical procedure. Almost 500,000 cases are currently performed yearly by board certified plastic surgeons and it is estimated that at least 20% of the cases are ultrasound assisted. Current ultrasonic liposuction devices are significantly different than the previous generations and require a certain level of technical expertise in order to achieve good outcomes with the technique. Although there are chapters devoted to the technique in general body contouring textbooks, there are no current textbooks that fully cover this important technique.The text is divided into three distinct sections for ease of use. Section I: Fundamentals will cover basic techniques and safe use of the devices for plastic surgeons looking to add ultrasound-assisted liposuction to their practice. Section II: Clinical Applications explores use of the devices for commonly performed surgeries, including facial, trunk, extremity (arm and leg), and buttock contouring as well as gynecomastia. Section III: Special Applications takes a focused look at the VASER device and its use in more complicated situations, with chapters handling silicone injection complications and contouring in a massive weight loss patient. Featuring contributions from leaders in the field, alongside full color photos and a special introductory video, Ultrasound-Assisted Liposuction serves as a reference for surgeons currently using ultrasonic techniques in liposuction and those looking to get started.

Based upon the research they have conducted over the past decade in the field of denoising processes for medical ultrasonic imaging, in this book, the authors systematically present despeckling methods for medical ultrasonic images. Firstly, the respective methods are reviewed and divided into five categories. Secondly, after introducing some basic mathematical tools such as wavelet and shearlet transforms, the authors highlight five recently developed despeckling methods for medical ultrasonic images. In turn, simulations and experiments for clinical ultrasonic images are presented for each method, and comparison studies with other well-known existing methods are conducted, showing the effectiveness and superiority of the new methods. Students and researchers in the field of signal and image processing, as well as medical professionals whose work involves ultrasonic diagnosis, will greatly benefit from this book. Familiarizing them with the state of the art in despeckling methods formedical ultrasonic images, it offers a useful reference guide for their study and research work.

This book integrates concepts from physical acoustics with those from linear viscoelasticity and fractional linear viscoelasticity. Compressional waves and shear waves in applications such as medical ultrasound, elastography, and sediment acoustics often follow power law attenuation and dispersion laws that cannot be described with classical viscous and relaxation models. This is accompanied by temporal power laws rather than the temporal exponential responses of classical models. The book starts by reformulating the classical models of acoustics in terms of standard models from linear elasticity. Then, non-classical loss models that follow power laws and which are expressed via convolution models and fractional derivatives are covered in depth. In addition, parallels are drawn to electromagnetic waves in complex dielectric media. The book also contains historical vignettes and important side notes about the validity of central questions. While addressed primarily to physicists and engineers working in the field of acoustics, this expert monograph will also be of interest to mathematicians, mathematical physicists, and geophysicists.

Dieser Band der Reihe Fachwissen Technische Akustik erläutert die technischen Grundlagen und Besonderheiten des Ultraschalls. Der Autor befasst sich mit der Erzeugung und Messung von Ultraschall und den Eigenschaften des Schallfeldes. In einem zweiten Teil werden einige wichtige Anwendungen von Ultraschall in Medizin und Technik dargestellt.

This book describes the development of quantitative techniques for ultrasound and photoacoustic imaging in the assessment of architectural and vascular parameters. It presents morphological vascular research based on the development of quantitative imaging techniques for the use of clinical B-mode ultrasound images, and preclinical architectural vascular investigations on quantitative imaging techniques for ultrasounds and photoacoustics.The book is divided into two main parts, the first of which focuses on the development and validation of quantitative techniques for the assessment of vascular morphological parameters that can be extracted from B-mode ultrasound longitudinal images of the common carotid artery. In turn, the second part highlights quantitative imaging techniques for assessing the architectural parameters of vasculature that can be extracted from 3D volumes, using both contrast-enhanced ultrasound (CEUS) imaging and photoacoustic imaging without the addition of any contrast agent. Sharing and summarizing the outcomes of this important research, the book will be of interest to a broad range of researchers and practitioners in the fields of medical imaging and biomedical engineering.

Over the past two decades ultrasound has undergone numerous advances in technology such as gray-scale imaging, real-time sonography, high resolution 7.5-10 MHz transducers, and color-flow Doppler. This makes ultrasound unsurpassed in its ability to provide very accurate images of the thyroid gland quickly, inexpensively, and safely. However, in spite of these advances, ultrasound remains drastically underutilized by endocrinologists. In part, this is due to a lack of understanding of the ways in which ultrasound can aid in the diagnosis of various thyroid conditions and to a lack of experience in the ultrasound technique by the clinician. Thyroid Ultrasound and Ultrasound-Guided FNA Biopsy presents a `hands-on'approach to using ultrasound in the clinical evaluation and management of thyroid disease. It is written specifically for the clinician and discusses the subtleties one needs to be aware of in using this technique. Particular attention is paid to using ultrasound in conjunction with FNA biopsy. New technology such as three-dimensional ultrasound, color-flow Doppler, and percutaneous injection of cysts and nodules are discussed and demonstrated. Numerous ultrasound examples are used to show the interactions between ultrasound and tissue characteristics and explain their clinical significance. Also presented is the work of several groups of investigators worldwide who have explored new applications of ultrasound, that has led to novel techniques that are proving clinically useful.

Cardiovascular fluid mechanics is now used as a tool in determining diagnosis, treatment, and prognosis by physicians and surgeons working in the fields of cardiology and angiology. The text is based on a considerable amount of clinical and experimental data on blood flow in the heart and large vessels obtained using various methods such as ultrasound pulsed Doppler velocimetry (including Doppler color flow imaging), catheter-tip electromagnetic velocimetry, hot-film anemometry, and laser Doppler velocimetry. The book will introduce medical researchers and clinicians to this rapidly developing field and allow them to apply the knowledge and the methods of fluid mechanics to practical medicine.

Die Exkorporale Stoßwellentherapie (ESWT) stellt eine neue Behandlungsmethode bei verschiedenen Erkrankungen im Bereich der Stütz- und Bewegungsorgane dar: - Tendinosis calcarea des Schultergelenkes - Epicondylopathien des Ellenbogengelenkes - Fasziitis plantaris - Pseudarthrosen Weitere Indikationen für Krankheitbilder wie Ligamentosen und Tendopathien befinden sich derzeit in der klinischen Erprobungsphase. Dieses Buch vermittelt in übersichtlicher und anschaulicher Weise den aktuellen Stand der ESWT und der Sonographie der Stütz- und Bewegungsorgane: - Die definierbaren Indiaktionen für ESWT - Die Applikation des ESWT-Therapiekopfes unter sonographischer Kontrolle - Die Standard-Schnittebenen für die sonographische Untersuchung der großen Gelenke (Schulter-Ellenbgen-, Knie- und Sprunggelenk einschließlich Fuß) des Arbeitskreises'Stütz- und Bewegungsorgane'der Deutschen Gesellschaft für Ultraschall in der Medizin e.V. (DEGUM) - Die Sonoanatomie, die Applikation des Ultraschallkopfes und weitere Indikationen für die sonographische Untersuchung

13. Gemeinsame Tagung der deutschsprachigen Gesellschaften für Ultraschall in der Medizin

14. Gemeinsame Tagung der Deutschen, Österreichischen und Schweizer Gesellschaft für Ultraschall in der Medizin

Dieser Buchtitel ist Teil des Digitalisierungsprojekts Springer Book Archives mit Publikationen, die seit den Anfängen des Verlags von 1842 erschienen sind. Der Verlag stellt mit diesem Archiv Quellen für die historische wie auch die disziplingeschichtliche Forschung zur Verfügung, die jeweils im historischen Kontext betrachtet werden müssen. Dieser Titel erschien in der Zeit vor 1945 und wird daher in seiner zeittypischen politisch-ideologischen Ausrichtung vom Verlag nicht beworben.

Die Praktische Duplexsonographie ist nicht als Konkurrenz zu umfangreichen Lehrbüchern der Doppler-, B-Bild- und Duplexsonographie, sondern speziell für die tägliche Praxis des Niedergelassenen gedacht. Vor allem ihm soll sie Einführung und Anleitung in seiner praktischen sonographisch-angiologischen Diagnostik - von der Dopplersonographie bis zur Farbduplexsonographie - geben; daneben soll sie natürlich allen interessierten Ärzten eine rasche Information und Übersicht über das faszinierende Verfahren der Duplexsonographie bieten und zu einer angemessen breiten Indikationsstellung zu dieser Untersuchung führen. Die Bedeutung für die gesamte Angiologie wird dabei besonders berücksichtigt.

Modern sonography makes possible the detection of small and subtle changes in the normal echo pattern. These may represent significant pathological changes which can not al­ ways be fully revealed by the echo pattern alone. There is, therefore, an increasing need for the supplement of the ultra­ sonically guided percutaneous puncture, which can be per­ formed with great accuracy and with virtually no risk. Also, ultrasonically guided puncture has proven invaluable for a wide variety of therapeutic purposes. The first percutaneous puncture guided by ultrasonic scanning using a specifically designed transducer was per­ formed in 1969 at the ultrasonic laboratory in Gentofte, now Herlev, Hospital, Copenhagen. The idea was based on a punc­ ture transducer described and used by Kratochwill for punc­ ture under the guidance of the ultrasonic A-presentation tech­ nique. The development in the field formed the basis of the First International Conference on Ultrasonically Guided Puncture at Herlev Hospital in 1978 sponsored by The Danish Society of Diagnostic Ultrasound. The knowledge and experience of the speakers at that conference was compiled in the book'Ultrasonically Guided Puncture Technique'published in 1980. Since then the Society has sponsored a conference at the same place in 1980 and 1983, the latest conference being termed'Third International Conference on lnterventional Ultrasound'.

Eingeführtes Kurzlehrbuch, das fundiert die Grundkenntnisse der Ultraschalldiagnostik vermittelt - praxisnah und mit zahlreichen Abbildungen von hoher Wiedergabequalität ausgestattet.

Die Autoren behandeln praxisorientiert die physikalischen und technischen Grundlagen der Radiologie in Frage und Antwort. In der vollständig überarbeiteten und aktualisierten 2. Auflage wird den neuen gesetzlichen Bestimmungen und den Weiterbildungsrichtlinien zum Facharzt für Diagnostische Radiologie Rechnung getragen. Hinzugekommen ist das Kapitel Magnetresonanztomographie, ergänzt wurden die Kapitel Computertomographie, digitale Radiographie und Sonographie. Auf einprägsame Abbildungen wurde Wert gelegt. Das Kapitel mit Bildbeispielen wurde durch CT- und MRT-Aufnahmen erweitert. Das Buch eignet sich besonders als Vorbereitung zur Facharztprüfung und für Teilnehmer an Strahlenschutzkursen sowie für MTRAs und Medizinstudenten, sowie für den Facharzt als Refresherkurs.

Die erste umfassende Darstellung der sonographischen Diagnostik von Erkrankungen des Gastrointestinaltrakts. Der Autor berücksichtigt nicht nur die konventionelle Abdominalsonographie, sondern auch spezielle Verfahren wie Endosonographie, Farbduplexsonographie und Hydrokolonsonographie. Zahlreiche Abbildungen, Schemazeichnungen, Übersichten und Tabellen veranschaulichen die diagnostischen Möglichkeiten. Sowohl niedergelassenen Ärzten als auch Klinikern wird diese praxisnahe Anleitung eine wertvolle Hilfe sein.

Die große Zahl der Ultraschalluntersucher bzw. -untersuchungen im deutschsprachigen Raum macht eine Vereinheitlichung von Nomenklatur und Befundung dringend erforderlich. Aus diesem Grund hat sich eine Kommission der Sektion Innere Medizin der DEGUM gebildet, die in Zusammenarbeit mit Kollegen der ÖGUM Empfehlungen für eine solche Standardisierung erarbeitet hat. Diese'Empfehlungen zur Befundung und Nomenklatur bei Ultraschalluntersuchungen innerer Organe'werden durch prägnante Beispiele in Wort und Bild erläutert.

Ultrasonography is an established technique used as an sonographic findings are illustrated with high quality adjunct to the physical examination in the evaluation images reflecting the author's long-term experience. of scrotal diseases. This book provides the reader with The book is intended to be a complete guide to a comprehensive overview of testicular diseases and the practical ultrasound applications of testicular diseases of these diseases on ultrasonography. appearance for the physicians in training, general radiologists, and Dr. Martin is one of the leading investigators who ultrasound specialists. The contents integrate the es­ early recognized the value and enthusiastically pursued sential clinical characteristics of the various diseases the capability of ultrasound for the diagnosis of scrotal (symptoms, physical findings, epidemiology) with in­ diseases. Her experience has been gathered over seve­ formation concerning their diagnosis and treatment. ral years, so the richness and depth of description of Based on extensive personal experience, the author the panoply of scrotal diseases is indeed comprehen­ succeeds brilliantly in providing a comprehensive in­ sive. The detailed description of the technique should sight into the problems of testicular diseases.

Die Dopplersonographie ist in der Geburtsmedizin die einzige Methode, mit der wissenschaftlich nachweisbar die perinatale Mortalität in Hochrisikokollektiven gesenkt werden kann. Das Konzept für das vorliegende Buch basiert auf den didak- tischen Unterlagen und Erfahrungen aus den Ausbildungskursen für die Dopplersonographie, die Beantwortung der Wünsche und Fragen der Teilnehmer sind in die Manuskripte eingeflossen. In praxisnaher Gestaltung werden Tips für den Einsatz und Hinweise auf mögliche Fehlerquellen sowohl für Anfänger aber auch für den erfahrenen Kliniker angeboten. Das Kompendium ist eine wertvolle Vorbereitungsunterlage auf die in Deutschland derzeit vorgesehene praktische Prüfung und das theoretische Kolloquium für die Zulassung zur Abrechnung der Dopplersonographie in Klinik und Praxis.

Ultrasonics is a reliable and proven technology for level measurement. It has been used for decades in many diverse industries such as water treatment, mining, aggregates, cement, and plastics. Ultrasonics provides superior inventory accuracy, process control, and user safety. Understanding Ultrasonic Level Measurement is a comprehensive resource in which you will learn about the history of ultrasonics and discover insights about its systems, installation and applications. This book is designed with many user-friendly features and vital resources including: • Real-life application stories • Diagrams and recommendations that aid both the novice and advanced user in the selection and application of an ultrasonic level measurement system • Glossary of terminology

Ein Praxisbuch, das Sie schon lange gesucht haben:o Von HNO-Ärzten geschriebeno A-Scan und B-Scan einschließlich der physikalischen und technischen Grundlageno Endo- und Farbdopplersonographieo KV-Zulassung und AbrechnungUnmittelbar praxisbezogen ist auch die klare, übersichtliche Didaktik und straffe Darstellung. Den Ultraschallbildern sind erklärende anatomische Zeichnungen gegenübergestellt, die Ihnen die Interpretation erleichtern. Das Bildmaterial ist hochaktuell und von ausgezeichneter Qualität. Hinweise auf typische Fehlerquellen und viele nützliche Tips machen Sie schnell fit für die Ultraschall-Praxis.

In 1942 Guderley investigated the behaviour of the typical parameters near the axis when he was studying the focusing of cylindrical shock waves by solving the partial differential equations using the similarity method. He pre­ dicted an infinitely large pressure and temperature at the axis of convergence. Since then many theoretical and experimental studies have been performed on shock focusing as an energy source for the generation of very high pressures and temperatures. Many experimental investigations confirmed the idea of Guderley that at the centre of convergence extremely high pressures and temperatures can be obtained. At the Technical University of Darmstadt we performed a numerical exper­ iment to investigate the shock-focusing phenomenon, and many test problems were solved using the Rusanov scheme. At the centre of convergence we ob­ tained extremely high pressures and temperatures. The results of these inves­ tigations were compared with the experimental work done at the Max Planck Institute for Fluid Dynamics Research in Gottingen. The three-dimensional time-dependent shock wave which was created by a centred gas volume under high pressure interacts with the plane walls of the cavity and leads to a focusing effect after the explosion. The symmetry-preserving character of the invari­ ant difference scheme under use was proved numerically by calculation over a long interval of time. A test run of our investigation was also made at the Institute of Computational Fluid Dynamics in Tokyo, Japan.

Die Analyse und Synthese akustischer Spektren wird heute immer wichtiger in so verschiedenen Fachgebieten wie Sonar- und Radar-Technik, in der zerstörungsfreien Materialprüfung, in der medizinischen Ultraschall-Diagnose, in der Geophysik und in der Raumakustik des Ingenieurbaus. Der Autor liefert eine moderne Fourier-Spektrographie, deren zentrales Thema die Formung akustischer Spektren beinhaltet. Das Buch vermittelt die mathematischen und physikalischen Grundlagen und liefert Lösungsstrategien sowie Konstruktionshinweise für zusammengesetzte akustische Sender-/Empfänger- und Reflektor-Anordnungen zur Erzielung von in der Praxis besonders erwünschten Richtwirkungen (Synthese) bzw. von höchster Auflösung der Quellenkonfiguration anhand der mit wenigen Sensoren erfaßten Signale (Analyse). Der Autor ist um eine möglichst anschauliche, bildhafte und leicht verständliche Schilderung bemüht und gibt allen Themen konkrete Beispiele. Die geschlossene und ausführliche Abhandlung gibt dem Leser das Werkzeug zum eigenen Arbeiten an praktischen Problemlösungen in die Hand.

Ein großer Teil der empfangenen Ultraschallinformation geht bei der Erstellung des Ultraschallbildes am Bildschirm verloren. Im vorliegenden Buch werden Techniken vorgestellt, die diese bislang nicht genutzten Informationen verwerten. Im Mittelpunkt stehen die Ultraschallhochfrequenzanalyse und die dreidimensionale Darstellung von Ultraschallbildern. Aber auch Anwendungen wie die Duplexsonographie und die Angiodynographie sowie die elektronische Befunddokumentation werden behandelt. Das Buch gibt damit eine Fülle von Anregungen für die Weiterentwicklung der Bildverarbeitung in der Ultraschalldiagnostik.

Die Meniskussonographie ist ein neues Anwendungsgebiet der Ultraschalldiagnostik in der Orthopädie. Besonders geeignet zur Abklärung von Meniskusverletzungen, aber auch zur Erstdiagnostik bei unklaren Kniebeschwerden, ermöglicht die Methode den gezielteren Einsatz der invasiven Verfahren oder kann diese sogar ganz ersetzen. Die Autoren des Buches haben die Meniskussonographie systematisch entwickelt und an einer großen Zahl von Patienten klinisch überprüft. Mit einer praxisnahen Darstellung der Untersuchungstechnik und der Zusammenstellung typischer Befunde erhalten Anfänger auf diesem Gebiet eine gründliche Einführung; der umfangreiche Atlasteil zeigt dem erfahreneren Untersucher eine Fülle von Befunden und ermöglicht ihm so den Vergleich mit eigenen Untersuchungsergebnissen.