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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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1.28\ Common Hepatic Artery

Blood Flow Spectrum

Fig. 8.28  Common hepatic artery blood flow spectrum

1.28.1\ Scanning Method

The patient should be on fast for 8–12 h and take a supine position. Probe is put on the subxiphoid, showing longitudinal section of the common hepatic artery. The Doppler sample volume is put in the middle cavity of the common hepatic artery. Measuring angle is less than 60°.

1.28.2\ Measuring Method and the Normal

Showing pulse Doppler blood flow spectrum and measuring blood flow velocity and resistance index. Normal: 91.1 ± 24.9 cm/s. The blood flow of the hepatic artery appears to have three upward peaks and a low resistance index.

1.28.3\ Clinical Application Value

(1) By this section we can judge whether the hepatic artery is unobstructed and whether there is a presence of anastomotic stenosis or thrombosis in the patients who received liver transplant. That color blood flow interrupt or cannot be shown, and the hepatic artery blood flow that cannot be measured will indicate a vascular stenosis or occlusion. (2) The hepatic artery blood flow velocity will be quicken compensatory in primary hepatocellular carcinoma or portal venous obstructive diseases such as portal vein thrombosis or tumor emboli.