Table 2: Visualization rates of submandibular ducts by MR Sialography in patient and control group cases.

Ratio of visualisation of the submandibular ductus in 
MR sialography
Diseased cases 
( )
Control groups 
( )
Totally 
( )

Primary duct36 (90%)18 (90%)54 (90%)
Primary branches40 (100%)20 (100%)60 (100%)
Secondary branches36 (90%)18 (90%)54 (90%)
Tertiary branches32 (80%)16 (80%)48 (80%)