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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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1.3\ Transverse Scan of the Left and Right Liver Through the Porta Hepatis on Subxiphoid

Fig. 8.3  Transverse scan of the left and right liver through the porta hepatis on subxiphoid. Note: 1 umbilical and sagittal, 2 the external inferior branch of left portal vein, 3 the external superior branch of the left portal vein, 4 right hepatic bile duct, and 5 left hepatic bile duct

 

 

 

 

 

 

 

 

 

 

 

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1.3.1\ Scanning Method

The patient should be on fast for 8–12 h with a supine position. Probe is transversely placed on the level of the subxiphoid, scanning slightly oblique to the right posterior. The patient should be in full and suspended inspiration to make the liver move down.

1.3.2\ Section Structure

Major structures: the porta hepatis, right portal vein, and left hepatic portal vein. Ancillary areas—the right and left liver lobe, oblique section of the caudate lobe and quadrate lobe, inferior vena cava, umbilical and sagittal section of the left portal vein, and left intrahepatic bile duct.

1.3.3\ Measuring Method and Normal

Measuring the right and left portal vein inner diameter, its normal value should be less than 0.8 cm.

1.3.4\ Clinical Application Value

This section can be used to determine location of the left lobe diseases. To observe the region of the porta hepatis, measuring the right portal vein and left portal vein. The bifurcation of the portal vein separating the caudate lobe from the quadrate lobe. Sagittal segment of the left portal vein is the boundary of the left interior lobe and the left exterior lobe.

The caudate lobe is located between portal vein and inferior vena cava.