Read e-book online Abdominal, An Issue of Ultrasound Clinics PDF

By Alessandro Castriota-Scanderbeg, Bruno Dallapiccola

ISBN-10: 3540679979

ISBN-13: 9783540679974

This publication makes a speciality of the radiographic alterations of malformation syndromes and skeletal dysplasias. it really is established such that the reader can establish the radiographic adjustments and relate them to express ailment entities. the purpose is to supply a necessary, useful instruction to the popularity of the major radiographic indicators for diagnosing malformation syndromes and skeletal dysplasias. The e-book is meant for radiologists, medical and clinical geneticists, and pediatricians. the cloth is split into elements. the 1st half is dependent in a symptom-oriented shape and describes nearly 2 hundred radiographic indicators, delivering information regarding their occurrence, anatomic place, diagnostic relevance, pathogenesis, and trend of inheritance, if appropriate. the second one half offers approximately a hundred syndromes and skeletal dysplasias and gives analytical info relating signs, genetics, explanations, radiographic visual appeal, and significant differential prognosis.

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Example text

A postprocedure ultrasound within 24 hours after TIPS placement is frequently helpful to document patency and to obtain baseline flow velocity [8]. Technique Ultrasound examination of TIPS can be challenging: the cirrhotic liver is often shrunken with the stent placed deep within the organ. 5-MHz sector transducer, through a right intercostal approach is often the best technique. The lower frequency affords the best penetration and optimal Doppler evaluation. When measuring blood flow velocities within the TIPS, care should be taken to properly adjust the Doppler angle.

Reversal of portal venous blood flow Reversal of blood flow within the main portal vein or its branches, from the normal hepatopetal to a hepatofugal direction away from the liver parenchyma, can be a specific sign of portal hypertension and is more often present in patients who have advanced hepatic disease. An easy clue to diagnose this flow reversal is to notice that at the porta hepatic, the hepatic artery and the portal vein have blood flowing in opposite directions (Fig. 8) (Child-Pugh grade C cirrhosis) [4].

Use of ultrasound for preoperative assessment A potential candidate for LT is first evaluated clinically to determine the severity of the liver disease. There are several scoring systems that can be used to grade the severity of liver disease, including the Child-Turcotte-Pugh (CTP) scoring system and the Model for End-Stage Liver Disease (MELD) scoring system. Although the CTP system is useful for grading the severity of liver disease, the OPTN uses the MELD system for allocation of livers to patients on the LT waiting list.

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Abdominal, An Issue of Ultrasound Clinics by Alessandro Castriota-Scanderbeg, Bruno Dallapiccola


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