Ultrasound physics

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  • This review is for the 3rd Edition of Edelman's Understanding Ultrasound Physics. As Mr. Ridgeway noted in his review, this book has a bronze cover and is the most recent edition. Dr. Edelman presents the concepts in an orderly manner. Each chapter is a building block to the next. He words the material in a way that the average person can understand. Many ultrasound physics texts use terminology and principles which are far more technical, detailed and complex than necessary. Not this one!

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  • Ultrasound has become an integral component of obstetric care, with the vast majority of patients having at least one ultrasound examination during pregnancy. From the determination of early pregnancy and gestational age to the evaluation of fetal growth and well being, ultrasound is a valuable diagnostic tool for the practicing obstetrician. Recent advances in obstetric ultrasonography have increased its importance in managing pregnancies at risk for aneuploidy, structural anomalies, preterm delivery, and blood flow abnormalities. ...

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  • Rather than focusing on earlier treatments, based largely on the simplifications of geometrical acoustics, Physical Principles of Medical Ultrasonics examines concepts of wave acoustics, introducing them in the very first chapter. Practical implications of these concepts are explored, first the generation and nature of acoustic fields, and then their formal descriptions and measurement. Real tissues attenuate and scatter ultrasound in ways that have interesting relationships to their physical chemistry, and the book includes coverage of these topics.

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  • Ancient Hebrew and Christian tradition relates that the universe was created in six days, following which there was a day of rest. What the old chronicles never recorded was that, on the eighth day, the Creator must have dropped back into the lab to do some tidying up. Only then, coming across his rough notes for Maxwell’s and the acoustic wave equations, did the thought occur that the creation of light and sound could be logically extrapolated to x-rays and ultrasound.

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  • We wrote this second edition of the Handbook in an attempt to help physicians and sonographers learn practical and useful ultrasound concepts that can be applied daily in the echocardiography laboratory. Our goal is to help improve the quality of day-to-day echocardiographic studies as performed in the real world. We have broadly expanded subject content to serve as a study guide for both the physician preparing for the ASEeXAM and the sonographer studying for the RDCS or RCS examination.

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  • In recent years, technology has revolutionized the practice of surgery. As part of this change, surgeon-performed ultrasound has become one of the most integral parts of the surgeon’s clinical practice. It is not surprising to observe this current surge of interest in ultrasound by general surgeons because surgeons are highly motivated to provide the best possible care for their patients, including the use of the latest technologic advances in diagnosis and treatment.

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  • Writing and rewriting a text such as Medical Imaging Physics over several editions presents two challenges. The first is to keep the information fresh and relevant. This is a particular challenge in medical imaging, because the field is evolving so rapidly. The third edition of this text was published in 1992, just 10 short years ago. Yet in that text no mention was made of topics such as photodiode or direct conversion digital x-ray imagers; digital mammography; digital fluoroscopy; power Doppler ultrasound; functional magnetic resonance imaging; elastography; or helical CT scanning.

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  • The purpose of this book is to provide both an introduction and a state-of-the-art review of the essential physics and signal processing principles of diagnostic ultrasound in a single reference volume with a unified approach. This book draws together many of the ideas from seminal papers, the author’s research, and other sources in a single narrative and point of view. Unlike texts that present only the theory of acoustic fundamentals, this book relates topics to each other in the context of ultrasound imaging and practical application.

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  • Rapid technical advances in medical imaging, including its growing application to drug/gene therapy and invasive/interventional procedures, have attracted significant interest in close integration of research in life sciences, medicine, physical sciences and engineering. This is motivated by the clinical and basic science research requirement of obtaining more detailed physiological and pathological information about the body for establishing localized genesis and progression of diseases.

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  • A wave is one of the basic physics phenomena observed by mankind since ancient time. The wave is also one of the most-studied physics phenomena that can be well described by mathematics. The study may be the best illustration of what is “science”, which approximates the laws of nature by using human defined symbols, operators, and languages.

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  • Before a judging event, you should take steps to mentally and physically prepare yourself. Thoroughly familiarize yourself with the style(s) that you will judge if you know what those styles are ahead of time. Sample a few commercial examples and review the style guidelines and brewing procedures for those styles. Also, come to the event prepared to judge. Bring a mechanical pencil, a bottle opener, a flashlight, and any references that you might need to evaluate the beers. Also, make sure to come to the event in the right frame of mind.

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  • The values indicated are mean values drawn from the literature. It should be noted that organ dimensions may vary substantially from one individual to the next. Generally the values are not correlated with age, height, or constitution and therefore should be treated as guidelines. Vascular dimensions refer to inside diameters.

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  • Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học General Psychiatry cung cấp cho các bạn kiến thức về ngành y đề tài: Ultrasound has the potential to detect degeneration of articular cartilage clinically, even if the information is obtained from an indirect measurement of intrinsic physical characteristics...

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  • Microbubble-based contrast agents for ultrasound were introduced some time ago, although their clinical application has become widespread only in recent years. Since color and power Doppler reveal overt artifacts after microbubble injection due to the peculiar features of harmonic signals produced by insonation of microbubbles, dedicated contrast-specifi c modes of US were introduced to optimize the registration of such signals.

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  • Endometrial biopsy: This kind of biopsy can be done in a doctor's office. A very thin flexible tube is placed into the uterus through the cervix. Then suction is used to remove a small amount of endometrium. The suction usually takes less than a minute. The discomfort is much thing like menstrual cramps and can be helped by taking a drug like ibuprofen before the test. Sometimes numbing medicine is put into the cervix just before the test to help reduce the pain. Ultrasound (see below) is often done before the biopsy. This helps the doctor find any suspicious areas...

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  • This book is intended as an introductory text for Engineering and Applied Science Students to the Medical Applications of Electronics. A course has been offered for many years in Cardiff in this arena both in this College and its predecessor institution. A new group, the Medical Systems Engineering Research Unit, was established following the reorganisation of the College. Restructuring and review of our course material and placing the responsibility for teaching this course within the new group led to a search for new material.

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  • Introductory Chapter Tissue Regeneration – A Clinical Science Whose Time Has Come 1 Jamie Davies Understanding and Manipulating Endogeneous Healing of Tissues 11 The Role of Physical Factors in Cell Differentiation, Tissue Repair and Regeneration 13 Monica Monici and Francesca Cialdai Effect of Low-Intensity Pulsed Ultrasound on Nerve Repair 35 Jiamou Li, Hua Zhang and Cong Ren Disinfection of Human Tissues in Orthopedic Surgical Oncology by High Hydrostatic Pressure Peter Diehl, Johannes Schauwecker,...

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  • Table 88-6 Some Novel Medical Treatments for Hepatocellular Carcinoma EGF receptor antibody Erlotinib, Gefitinib Kinase antagonists, Sorafenib Vitamin K IL-2 131 I – ethiodol (Lipiodol) 131 I – Ferritin 90 Yttrium microspheres 166 Holmium Three-dimensional conformal radiation Proton beam high-dose radiotherapy Anti-angiogenesis strategies, Bevacizumab Note: EGF, epidermal growth factor; IL, interleukin. Summary Most Common Modes of Patient Presentation 1.

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  • Techniques for non-invasive Breslow determination use either mechanical or electromagnetic waves. A wave is the propagation of a perturbation inducing reversible variations of local physical properties. It transports energy but no matter. Ultrasounds and optical waves are used mainly because of their innocuousness. In the next paragraphs, ultrasonography then several optical techniques will be developed. Basic physical principles of each type of wave interaction with skin will be described then accuracy of Breslow index determination by such techniques will be given.

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  • Cholestatic Conditions When the pattern of the liver tests suggests a cholestatic disorder, the next step is to determine whether it is intra- or extrahepatic cholestasis (Fig. 43-1). Distinguishing intrahepatic from extrahepatic cholestasis may be difficult. History, physical examination, and laboratory tests are often not helpful. The next appropriate test is an ultrasound. The ultrasound is inexpensive, does not expose the patient to ionizing radiation, and can detect dilation of the intra- and extrahepatic biliary tree with a high degree of sensitivity and specificity.

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