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Atlas of Human Body Ultrasound Scanning_ Methods and Diagnostic Applications ( PDFDrive ).pdf
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3  Salivary Gland Scanning (Parotid Gland and Submandibular Gland)

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4\ Longitudinal Scan

of the Submandibular Gland

Fig. 3.4  Longitudinal scan of the submandibular gland

Subcutaneous fat

LN

SMG

FA

30

Z. Xu

 

 

4.1\ Scanning Method

The patient takes a supine position and extends the neck adequately; the probe should be placed inferior to the mandible and parallels with the mandible.

4.2\ Section Structure

Submandibular gland is oval shaped with clear borders. The parenchymal echo character is the same to that of the parotid gland; echo density is higher than adjacent soft tissue and without posterior attenuation. Facial artery sometimes can be shown in the gland. The normal submandibular duct cannot be shown in the image.

4.3\ Measurement Method

and Normal Value

Longitudinal diameter and thickness can be measured on this section. The mean longitudinal diameter and thickness are 3 and 1.5 cm, and there is no significant difference between male and female.

4.4\ Clinical Application Value

Evaluate the echo homogeneity of the submandibular parenchyma to exclude diffused diseases. A continuous scan will find the focal lesions of the submandibular gland.

3  Salivary Gland Scanning (Parotid Gland and Submandibular Gland)

31

 

 

5\ Longitudinal Scanning

of the Submandibular Gland:

Color Doppler Flow Image

Fig. 3.5  Longitudinal scan of the submandibular gland: Color Doppler flow image

416403

Subcutaneous fat

LN

SMG

FA

5.1\ Scanning Method

The patient takes a supine position and extends the neck adequately; the probe should be placed

inferior to the mandible and parallels with the mandible. Minimal pressure should be used to avoid influence of the blood signal.

32

 

 

Z. Xu

 

 

 

 

5.2\

Section Structure

5.3\

Clinical Application Value

None or a few spots of blood flow Doppler signal in normal submandibular gland parenchyma. Sometimes facial artery may be shown running in the gland.

Blood signals will increase in all kinds of inflammation.