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Atlas of Human Body Ultrasound Scanning_ Methods and Diagnostic Applications ( PDFDrive ).pdf
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9  Abdominal Vascular Scanning

347

 

 

3.4\ Proper Hepatic Artery Blood

Flow Spectrum

Fig. 9.12  Proper hepatic artery blood flow spectrum

3.4.1\ Scanning Method

The patient should be on an empty stomach for 8–12 h, and should be in a supine position. The probe is placed at the subxyphoid level, showing a longitudinal section of the proper hepatic artery. The Doppler sample volume in the centre of the

vessele cavity. The measurement angle is less than 60°.

3.4.2\ Measurement Method and Normal Value

The pulsed Doppler blood flow spectrum is shown, measuring the blood flow velocity and RI. The normal value is 82.2 ± 20.8 cm/s. The hepatic artery blood flow appears with three upward peaks and a low RI.

3.4.3\ Clinical Application Value

(1) In liver transplant patients, we observe the hepatic artery to judge whether there is a hepatic artery obstruction; in the presence of an anastomotic stenosis, the hepatic artery blood flow cannot be measured, which will indicate a vascular stenosis or occlusion. (2) The hepatic artery blood flow velocity will be quicken compensatory in the case of a primary hepatocellular carcinoma or portal venous obstructive disease such as portal vein thrombosis or tumor emboli.