Sialogram
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Sialogram or sialography is imaging of the salivary glands using x-ray[1]
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[edit] Technique
A baseline radiograph of the required salivary gland would be taken , a cannula then is inserted in this salivary gland duct's opening in the mouth, a Radio-opaque fluid (Contrast medium) then is injected in the duct.
A series of radigraphs would then be taken to determine the flow of the fluid , identify any obstructions and its location , the rate of fluid excretion from the gland.
Usually the radiographs taken are lateral oplique views of the face [2]as Orthopantomogram's are not useful for the purpose of locating the area due to superimpositions and the way they are taken to put the teeth in the main field.
[edit] Indications
- Salivary gland's stones
- Salivary duct calculus
- Sjogren syndrome
- salivary gland tumours
- Salivary gland narrowing or obstruction
[edit] Contraindications
- Allergy to the contrast medium , mainly to Iodine.
- Acute salivary gland infections
