By Jane Bates
Ultrasound remains to be some of the most very important diagnostic instruments in medication and is utilized by a variety of healthcare execs throughout many purposes. This ebook offers a pragmatic, clinically proper consultant for all practitioners operating within the box of belly ultrasound. Its objective is to let the operator to maximise the diagnostic info and realize the restrictions of ultrasound scans.
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Extra info for Abdominal Ultrasound: How, Why and When (3rd Edition)
Conference proceedings of BMUS, Edinburgh, 1996 4. Cheng Y, Huang T, Chen C et al. Variations of the middle and inferior right hepatic vein: application in hepatectomy. J Clin Ultrasound 1997; 25: 175–182 5. Goyal AK, Pokharna DS, Sharma SK. Ultrasonic measurements of portal vasculature in diagnosis of portal hypertension. J Ultrasound Med 1990; 9: 45 6. Gaiani S, Bolondi L, Li Bassi S et al. Effect of meal on portal hemodynamics in healthy humans and in patients. Hepatology 1989; 9: 815–819 7.
B) Colour Doppler demonstrates the MPV and LPV in red, and the RPV in blue, due to the relative direction of flow to the beam. 30 The liver The three main hepatic veins, left (LHV), middle (MHV) and right (RHV), can be traced into the 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.
Size is therefore usually assessed subjectively. Look particularly at the inferior margin of the right lobe which should come to a point anterior to the lower pole of the right kidney (Fig. 1). A relatively common variant of this is the Reidel’s lobe, an inferior elongation of segment V1 on the right. This is an extension of the right lobe over the lower pole of the kidney, with a rounded margin (Fig. 16), and is worth remembering as possible cause of a palpable right upper quadrant ‘mass’. To distinguish mild enlargement from a Reidel’s lobe, look at the left lobe – if this also looks bulky, with a rounded inferior edge, the liver is enlarged.