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Atlas of Human Body Ultrasound Scanning_ Methods and Diagnostic Applications ( PDFDrive ).pdf
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Z. Xu et al.

 

 

8\ Superior Mesenteric Vein

8.1\ Transverse View

of the Superior Mesenteric

Vein

SMV

 

 

 

 

SMA

 

 

 

 

 

IVC

 

 

 

 

 

 

 

 

Ao

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

s

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SMA

 

 

 

 

 

 

 

SMV

 

 

 

 

 

 

 

 

 

 

IVC

 

 

 

 

 

 

 

Ao

 

 

 

 

 

 

 

 

 

 

S

 

 

 

 

8.1.1\ Scanning Method

The patient should be fasted for more than 8 h, and should be in a supine position. The probe is placed transversely under the xyphoid process and moved downward after the pancreas is shown on the image. Some pressure should be exerted in obese patients.

8.1.2\ Section Structure

Transverse sections of the SMA, SMV, IVC, aorta, and pancreas.

8.1.3\ Measurement Method and Normal Value

The transverse or anterior–posterior diameter of the SMV is measured. The lumen of the SMV may decrease after pressure is exerted.

8.1.4\ Clinical Application Value

This section can be used to orient the SMV and facilitate the long-axis view of it in the case of SMV thrombosis; the diameter of the lumen increases, and the vessel cannot be compressed.

Fig. 9.29  Transverse view of the superior mesenteric vein