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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

1.10\ Oblique scanning of the liver through the gallbladder and inferior vena cava by the right subcostal margin

Fig. 8.10  Oblique scan of the liver through the gallbladder and inferior vena cava by the right subcostal margin

GB

RPV

CL

RL

223

LL

LPV

VL

IVC

224

M. Zhang

 

 

1.10.1\ Scanning Method

The patient should be on fast for 8–12 h with a supine position. Probe is transversely placed to the right subcostal margin and parallel to it.

1.10.2\ Section Structure

Oblique transverse section of the liver, gallbladder, inferior vena cava, and venous ligament.

1.10.3\ The Clinical Application Value

In this section, the straight-through cable of the gallbladder and the inferior vena cava through the liver is a mark of the middle line of the liver and so as a boundary of the left lobe and right lobe.

8  The Digestive System Organ Scanning

225

 

 

1.11\ Oblique Scanning of the Liver

through Hepatic Veins and

the Second Porta Hepatis on

Subxiphoid

Fig. 8.11  Oblique scan of the liver through hepatic veins and the second porta hepatis on subxiphoid

MHV

RHV

RL

Dia

LL

LHV

IVC

226

M. Zhang

 

 

1.11.1\ 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 right posterior. The patient should be in full and suspended inspiration to make the liver move down.

1.11.2\ Section Structure

Oblique views of the liver, the hepatic veins, and inferior vena cava. Diaphragmatic top area of the liver near the second porta hepatis.

1.11.3\ Measuring Methods

and Normal

Measuring diameter of three hepatic veins. Measurement should be made in the point of distance 1–2 cm from the inferior vena cava. The normal value: left hepatic vein diameter 0.5–0.9 cm,

middle hepatic venous diameter 0.5–0.9 cm, and right hepatic vein diameter 0.4–0.9 cm.

1.11.4\ Clinical Application Value

(1) Observing the area near the second porta hepatis and the area near the diaphragmatic top of the liver. (2) Determining if there are dilation, narrowness, or presence of emboli in the inferior vena cava or hepatic veins. (3) The middle hepatic vein is a boundary of the right hepatic lobe and left hepatic lobe; the left hepatic vein is a boundary mark of the left internal lobe from left external lobe; the right hepatic vein is the boundary mark of the right anterior lobe and right posterior lobe.

1.11.5\ Notes

Hepatic veins can enter the inferior vena cava directly, or two branches merge into one and then enter the inferior vena cava.