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Atlas of Human Body Ultrasound Scanning_ Methods and Diagnostic Applications ( PDFDrive ).pdf
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8  The Digestive System Organ Scanning

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1.21\ Oblique Scanning of the Right Liver Through Right Hepatic Veins on Subxiphoid

Fig. 8.21  Oblique scanning of the right liver through right hepatic veins on subxiphoid. Note: 1 Right-posterior-edge hepatic vein

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1.21.1\ Scanning Method

The patients should be on fast for 8–12 h and in a supine position. Probe is put horizontally toward the right posterior-superior at the level of subxiphoid.

1.21.2\ Section Structure

Major areas: right hepatic lobe, right hepatic veins, and inferior vena cava.

1.21.3\ Measuring Method and Normal

Measuring the largest oblique diameter of the right hepatic lobe, it should be less than 14 cm. Measuring inner diameter of the right hepatic vein.

1.21.4\ Clinical Application Value

This is the standard plane for measuring the largest oblique diameter of the right hepatic lobe.

8  The Digestive System Organ Scanning

1.22\ Longitudinal Scanning 1 of the Right Liver Through

the Porta Hepatis on the Right Subcostal

Fig. 8.22  Longitudinal scan of the right liver through the porta hepatis on the right subcostal

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1.22.1\ Scanning Method

The patient should be on fast for 8–12 h. Subcostal scanning should be performed with patient in a left lateral decubitus or supine position. Having a deep inspiration so that liver moves down as an acoustic window.

1.22.2\ Section Structure

Major areas: longitudinal section of the right liver, portal vein, and right portal vein; oblique scan of the inferior vena cava, proper hepatic artery, common hepatic artery, and right hepatic biliary duct; sagittal section of the pancreatic head.

1.22.3\ Measuring Method and Normal

The portal vein diameter should be measured outside the liver and should be less than 1.4 cm; right portal vein should be less than 1.0 cm. Pulsed Doppler achieves portal vein flow at this section.

1.22.4\ Clinical Application Value

This is a standard scan of the porta hepatis. It is used to observe portal vein, right portal vein, and liver parenchymal near the porta hepatis and to determine whether the portal vein, common hepatic artery, and right hepatic biliary duct have dilation and whether there is abnormal echogenicity in them.

8  The Digestive System Organ Scanning

1.23\ Longitudinal Scanning 2

of the Right Liver through

the Porta Hepatis

Fig. 8.23  Longitudinal section 2 of the right liver through the porta hepatis on the subcostal

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