By Bates J.
A entire consultant to belly ultrasound, together with uncomplicated anatomy, procedure and ultrasound appearances including the most typical pathological techniques. could be hugely illustrated with top of the range scans, many in color.
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Extra info for Abdominal Ultrasound: How, Why and When
Where possible, scan in at least two patient positions. It is surprising how the available ultrasound information can be enhanced by turning your patient oblique, decubitus or erect. Inaccessible organs flop into better view and bowel moves away from the area of interest. ● Use a combination of sub- and intercostal scanning for all upper-abdominal scanning. The different angles of insonation can reveal pathology and eliminate artefact. ● Don’t limit yourself to longitudinal and transverse sections.
The liver is surrounded by a thin, hyperechoic capsule, which is difficult to see on ultrasound unless outlined by fluid (Fig. 2). 15) and the liver itself provides an excellent acoustic window on to the various organs and great vessels situated in the upper abdomen. 1 Longitudinal section (LS) through the right lobe of the liver. The renal cortex is slightly less echogenic than the liver parenchyma. superior margin of the liver and is best demonstrated when surrounded by ascitic fluid. 15). The ligamentum venosum separates the caudate lobe from the rest of the liver (Fig.
21). The three main hepatic veins, left, middle and right, can be traced into the inferior vena cava (IVC) at the superior margin of the liver (Fig. 11). Their course runs, therefore, approximately perpendicular to the portal vessels, so a section of liver with a longitudinal image of a hepatic vein is likely to contain a transverse section through a portal vein, and vice versa. Unlike the portal tracts, the hepatic veins do not have a fibrous sheath and their walls are therefore less reflective.
Abdominal Ultrasound: How, Why and When by Bates J.