<investigation, radiology> An X-ray study of the salivary ducts. ... A contrast material is injected into the salivary duct (within the mouth) to highlight the coarse and calibre of the ducts. This test is used to detect a stricture or blockage (for example stones, tumour) of the salivary ducts. ... (18 Nov 1997) ... 
(si-al´o-gram) a film obtained by sialography.
Type: Term Pronunciation: sī-al′ō-gram Definitions: 1. A radiograph of sialography.
sialogram A radiograph produced by sialography.
Greek sialon = saliva, and gramma = a diagram; hence, a radiograph of a salivary duct.