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This objective of this project is to build a real-time 3-D ultrasound imaging system for combat casualty care. The high frame rate necessary for real-time 3-D imaging is obtained using a synthetic aperture beamforming technique. The technique uses a fraction of the transmit pulses required by a conventional imaging system and permits very rapid image acquisition with no degradation of image quality. A network of high speed digital signal processors is currently being designed to implement the beamformer. A new transducer technology is also being explored for the transducer array. This technology should permit a 25-fold increase in the acoustic power delivered by a single array element without a corresponding increase in the excitation voltage. The array will be incorporated into a compact probe head designed to rock the array for real-time 3-D imaging. Besides the scanner development, an extensive set of software tools are being developed to provide easy and accurate analysis of the resulting 3-D data. These tools will allow real-time viewing of arbitrary two-dimensional planes through the data set and will allow quantitative assessment and display of the three-dimensional anatomy.
Up-to-Date Details on Using Ultrasound Imaging to Help Diagnose Various DiseasesDue to improvements in image quality and the reduced cost of advanced features, ultrasound imaging is playing a greater role in the diagnosis and image-guided intervention of a wide range of diseases. Ultrasound Imaging and Therapy highlights the latest advances in usin
Diagnostic and Therapeutic Ultrasound has recently taken an explosive growth for better safer, economic, mobile and high quality healthcare. This technology is very appealing for medical applications because it is non-ionizing, non-invasive and it is available in most of the medical and clinical facilities. Its low cost, when compared with other medical image modalities, makes it one of the preferred tools for medical monitoring, follow-up and diagnosis. Besides the traditional fields of Cardiology and Obstetrics, where it is extensively used for long time, it has became also very useful in the diagnosis of diseases of the prostate, liver and coronaries and carotids atherosclerosis. However, Ultrasound images present poor quality, very low signal to noise ratio and a lot of artifacts. The extraction of useful information from Ultrasound data for diagnosis is a challenge task that makes this medical image modality a very active field of research. The difficulties are being overcome and novel and advanced methods are being proposed for detection, characterization and segmentation of abnormalities in several organs. In fact, Ultrasound application range is vast, covering almost all organs of the human body, including the brain where Tran-cranial Doppler Ultrasound is very important to assess the brain vasculature. This book presents some of the recent advances in Ultrasound imaging technology covering several organs and techniques in a Biomedical Engineering (BME) perspective. The focus of the book is in the algorithms, methodologies and systems developed by multidisciplinary research teams of engineers and physicians for Computer-Aided Diagnosis (CAD) purposes. Cardiovascular and Cancer, the most common life-threatening diseases in western countries, are two of the most important topics focused in the book. However, other advanced issues are also presented such as Intravascular Ultrasound, 3D US and Ultrasound in Computer-Aided Surgery (CAS). Some chapters are direct contributions from medical research groups where Ultrasound has also received great attention in the last decade. By this, new techniques based on Ultrasound were introduced in the clinical practice for diagnosis and therapeutics, mainly in hospital facilities.
This groundbreaking resource offers you exclusive coverage of the latest techniques in diagnostic and therapeutic 3-D ultrasound imaging instrumentation and techniques. Providing a solid overview of potential applications in clinical practice, you find need-to-know details on major diseases, including vascular diseases, breast cancer, cardiac abnormalities and prostate cancer.
Forlagets beskrivelse: The World Health Organization (WHO) recognizes ultrasound as an important medical diagnostic imaging technology. Manuals on ultrasound have been published by WHO since 2001, with the purpose of guiding health professionals on the safe and effective use of ultrasound. Among the diagnostic imaging technologies, ultrasound is the safer and least expensive, and technological advances are making it more user friendly and portable. Ultrasound has many uses, both diagnostic and therapeutic. For the purposes of this manual, only diagnostic ultrasound will be considered and further analysed. Basic physics of ultrasonographic imaging was released in 2005; since then, WHO has addressed the physics, safe use and different applications of ultrasound as an important diagnostic imaging tool. Since it is a non ionizing radiation technology, along with nuclear magnetic resonance imaging, the risks inherent to its use are lower than those presented by other diagnostic imaging technologies using ionizing radiation, such as the radiological technologies (X-rays and computed tomography scanners).
Based on a popular course taught at the Radiological Society of North America's Annual Meeting, this book provides all the essential information for choosing the appropriate imaging examination and completing the imaging workup of a patient. Chapters are organized into parts according to the anatomical location of the clinical problems addressed. The authors guide the reader through the diagnostic evaluation, reviewing the indications for and the strengths and limitations of ultrasound imaging.Features: Practical information on the usefulness of ultrasound, nonimaging tests, or other imaging modalities, such as CT and MR, for evaluating each clinical situation Clear descriptions of symptoms and differential diagnosis Nearly 1,300 images and photographs demonstrating key points A new chapter on neonatal spinal cord anomalies Comprehensive and up-to-date, this edition is essential for ultrasonographers, radiologists, residents, physicians, nurses, and radiology assistants seeking the latest recommendations for the effective use of ultrasonography.
When most of us hear the word ultrasound, we typically think of diagnostic imaging; especially in regard to its use in obstetrics. Ultrasound, however, can also be used for a wide variety of therapeutic applications, which the author has chosen as the theme of this book. The book begins with a primer on sound waves, which are followed with some basics on imaging. Next are descriptions of the evolving technology, with a specific emphasis on medical applications. Examples are given of the different procedures that are carried out using sophisticated, non-invasive, image-guided devices. Each procedure is carefully explained with the help of many detailed illustrations. Examples of these include the destruction of tumors deep within the body using highly focused ultrasound beams. Especially impressive are the treatments that are guided with realtime MRI. One in particular is employed for opening barriers in the brain to facilitate the delivery of a range of agents for treating conditions such as Alzheimer’s disease. For almost thirty years, Victor Frenkel has worked as a teacher, mentor, and research scientist at medical schools, engineering departments, and government institutions. Along the way he made his own contributions in the field of therapeutic ultrasound. These include the development of novel treatment protocols, and also designing and building the devices used to carry them out. Told with easy-to-follow language, including key historical and cultural perspectives, this book is meant for anyone who loves cutting edge technology, especially pertaining to medical treatments.
Ultrasound imaging is one of the most important and widely used diagnostic tools in modern medicine, second only to the conventional x-ray. Although considered a mature field, research continues for improving the capabilities and finding new uses for ultrasound technology while driving down the cost of newer, more complicated procedures such as intravascular ultrasound. Diagnostic Ultrasound: Imaging and Blood Flow Measurements presents new developments, fundamental physics, instrumentation, system architecture, biological effects of ultrasound, and clinical applications that reflect this initiative. Keeping mathematical derivations to a minimum, this book begins with an overview of the field, the strengths and weaknesses of the technology, and its role relative to other imaging modalities. The book proceeds to describe the fundamental physics involved, a detailed examination of the transducer, conventional imaging approaches, and Doppler measurements. The following chapters explore new developments such as flow, displacement, contrast, harmonic, intracavity, and 4-D imaging. The author concludes by reviewing current status and standards on bioeffects along with a unique chapter on measuring ultrasonic properties of tissues that can be found nowhere else. Emphasizing the engineering and signal processing aspects of ultrasound technology rather than taking a clinical perspective, Diagnostic Ultrasound: Imaging and Blood Flow Measurements encourages and enables further advances in this established yet dynamic field.
Text focusing on clinical problems and the appropriate imaging examination. Reviews the current state of sonography with regard to clinical issues seen in daily practice. Includes techniques, basic sonographic anatomy, and the sonographic findings.