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Contrast Enhanced Ultrasound Of Liver Diseases

Author: L. Solbiati
Publisher: Springer Science & Business Media
ISBN: 884702093X
Size: 53.18 MB
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In the last few years, the development of sonographic contrast agents - or "microbubbles" - has stimulated increasingly intensive studies on the rela tionships between ultrasound and contrast media. As a result, "contrast -spe cific" hardware and software systems have been introduced by different ultra sound manufacturers with impressive speed. This has finally led to the birth of a very new imaging modality -"contrast-enhanced sonography" (CEUS). Since 1999, the introduction of second-generation contrast agents has represented a decisive step towards the extensive clinical use of CEUS and has simultaneously made obsolete most, if not all, scientific publications available so far. This book is, to our knowledge, the first to deal entirely with second generation contrast agents and the most updated contrast-specific software for noncardiologic uses. The reasons why the liver has been chosen as the only "target" of the book are easily understandable by radiologists and hepatologists alike. The study of vascularity is the only purpose of CEUS, and the liver has a unique vascular system, with two different inflow systems resulting in a single outflow. Furthermore, the pathologically different focal liver lesions (FLLs) are mostly characterized by different "models" of vascularity: CEUS can mimic contrast enhanced computed tomography and magnetic resonance imaging, basing differential diagnosis on the morphological and temporal characteristics of enhancement, but with the additional unique advantage of the study being done in real-time.

Liver Investigations Updating On Us Technique And Contrast Enhanced Ultrasound Ceus

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Size: 30.12 MB
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Highlights: Overview of the state of the art of the use of US in the study of the liver. Application of US and CEUS in the study of a focal liver lesion within a healthy liver; to review the application of both techniques in cases of oncologic and cirrhotic patients in terms of focal liver lesion characterization and response to treatment. To give a focus on quantitative evaluation of lesion perfusion after CEUS in order to assess a differential diagnosis between benign or malignat liver lesions. Emerging US techniques in the evaluation of fibrosis. Abstract: Over the past few years, the cross sectional imaging techniques (Computed Tomography – CT and Magnetic Resonance – MR) have improved, allowing a more efficient study of focal and diffuse liver diseases. Many papers had been published about the results of a routinely clinical use of the dual source/dual energy CT techniques and the use of hepatobiliary contrast agents in MR liver studies. As a consequence, these new improvements have diverted the attention away from the Ultrasound technique and its technical and conceptual evolutions. In these years of disinterest, US and especially Contrast Enhanced Ultrasound (CEUS) have consolidated and grown in their application in clinical routine for liver pathologies. In particular, thanks to the introduction of new, dedicated software packages, CEUS has allowed not only qualitative, but also quantitative analysis of lesion microcirculation, thus opening a new era in the evaluation of lesion characterization and response to therapy. Moreover, the renewed interest in liver elastography, a baseline ultrasound-based imaging modality, has led to the development of a competitive technique to assess liver stiffness and then for the evaluation of the progression towards cirrhosis, and characterization of focal liver lesions, opening the way to avoid, in selected cases, liver biopsy. The aim of this review is to offer an up-to-date overview on the state of the art of clinical applications of US and CEUS in the study of focal and diffuse liver pathologies. Besides, it aims to highlight the emerging role of perfusion techniques in the assessment of local and systemic treatment response and to show how the liver evolution from steatosis to fibrosis can be revealed by elastography.

Contrast Media In Ultrasonography

Author: Emilio Quaia
Publisher: Springer Science & Business Media
ISBN: 3540272143
Size: 34.82 MB
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Examines in detail the different clinical applications of microbubble-based contrast agents. Explains the principles underlying the use of contrast-specific imaging techniques and the examination methodology. Contains numerous high-quality illustrations, including many in color. Written by recognized experts.

Diagnostic Methods For Cirrhosis And Portal Hypertension

Author: Annalisa Berzigotti
Publisher: Springer
ISBN: 3319726285
Size: 11.44 MB
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This book provides a unique up-to-date and comprehensive overview of the most important diagnostic methods available for assessing liver cirrhosis and portal hypertension. The book covers all the significant advances made in the last 10 years in HVPG and biopsy interpretation, imaging and elastography. This is a unique and well structured book authored by senior experts in the field aimed at providing updated knowledge to the hepatology specialist and to the physicians interested in chronic liver disease. The book starts by giving an overview of the disease, outlining the clinical needs in this field; this is followed by detailed information both on the invasive gold-standard methods (HVPG measurement, liver biopsy, endoscopy), and on the standard and emerging non-invasive methods, including serum markers of fibrosis, ultrasound-elastography, magnetic resonance elastography, ultrasound, contrast-enhanced ultrasound, CT, magnetic resonance and derived methods (dynamic flow assessment). The final part of the book is devoted to diagnostic tests in non-cirrhotic causes of portal hypertension (Budd-Chiari Syndrome, Portal vein thrombosis, idiopathic portal hypertension, etc), and in pediatric portal hypertension. Written by a team of worldwide opinion leaders this book pays special attention to the most promising novel non-invasive methods in the field.

Abdominal Ultrasound An Issue Of Ultrasound Clinics

Author: Wui K. Chong
Publisher: Elsevier Health Sciences
ISBN: 0323326374
Size: 31.30 MB
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Abdominal Ultrasound is comprehensively reviewed by guest editor Wui K. Chong and authors. Articles will include: Ultrasound of the Liver and Spleen; Ultrasound of the Gallbladder and Biliary Tree; Doppler US of the Liver, Portal Hypertension, and TIPS; Contrast evaluation of liver masses; Elastography of the Abdomen; The Role of Sonography in Liver Transplantation; Renal Ultrasound; Ultrasound of the Renal Transplant; Sonography of the Retroperitoneum; Ultrasound Assessment of the Aorta and Mesenteric Arteries; Sonography of the Bowel; Ultrasound of the Abdominal Wall; Ultrasound-Guided Intervention in the Abdomen and Pelvis, and more!

Atlas Of Contrast Enhanced Sonography Of Focal Liver Lesions

Author: Tommaso Vincenzo Bartolotta
Publisher: Springer
ISBN: 3319175394
Size: 62.63 MB
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This book offers an image-based, comprehensive quick reference guide that will assist in the interpretation of contrast-enhanced ultrasound (CEUS) examinations of the liver in daily practice. It describes and depicts typical and atypical behavior of both common and less frequently observed focal liver lesions. For each type of lesion, the findings on pre- and post-contrast images are presented and key characteristics are highlighted. Individual chapters also focus on the assessment of response to locoregional and systemic treatment and the impact of European guidelines on CEUS. The Atlas of Contrast-Enhanced Sonography of Focal Liver Lesions will serve as an invaluable hands-on tool for practitioners who need to diagnose liver lesions using CEUS in the major clinical settings: oncology patients, cirrhotic patients, and patients with incidental focal liver lesions.

Blumgart S Surgery Of The Liver Pancreas And Biliary Tract E Book

Author: William R. Jarnagin
Publisher: Elsevier Health Sciences
ISBN: 0323340873
Size: 31.89 MB
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Extensively revised with new illustrations, new clinical photos, this classic text remains the most comprehensive and up-to-date resource on surgery of the hepatobiliary and pancreatic region. Dr. William Jarnagin and his team of internationally recognized surgeons continue the Blumgart’s tradition of excellence, bringing you the latest advances in diagnostic and surgical techniques. You’ll find updates on the newest minimally invasive surgeries, new interventional diagnostic techniques, and complete coverage of all relevant diseases, including those seen in the tropics. Considers all worldwide opinions and approaches to management, and includes key data on surgical outcomes to better inform your clinical decision-making. Covers exactly what you need to know, balancing basic science with information on clinical practice. Presents cutting edge guidance on pathology, diagnostics, surgery and non-operative intervention of the liver, biliary tract, and pancreas in a single, comprehensive reference. Covers the most recent non-surgical therapies for pancreatic cancer, microwave ablation, and other emerging technologies. Brings you up to date with recent developments in transplantation, minimally invasive surgery, percutaneous devices, pre- and post-care, blood transfusion, and surgical techniques for the spleen. Features an extensively revised art and illustration program, with new anatomical line drawings (including hundreds now in color), more than 750 new clinical photos, more schematic diagrams that summarize information, and new graphs and algorithms throughout.

The Use Of Contrast Enhanced Ultrasonography For The Characterization Of Focal Liver Lesions

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Focal liver lesions often occur with or without an underlying liver disease. Contrast-enhanced ultrasonography can aid in characterizing liver lesions, potentially avoiding biopsy and computed tomography procedures. Contrast-enhanced ultrasonography has a high sensitivity and specificity for differentiating characteristics of liver lesions compared with noncontrast sonography. The different contrast characteristics aid in differentiating benign and malignant lesions. Malignant lesions tend to have washout of contrast in the venous phases, whereas benign lesions have hyperenhancement during the venous phases. Therefore, contrast-enhanced ultrasonography should be considered an essential component of the diagnostic process for diagnosing and following focal liver lesions.