Digital subtraction imaging (DSI) has been widely used in angiography
but less commonly applied to sialography. Over a 3-year period 109 pat
ients referred for sialography, 42 males and 67 females with a mean ag
e of 44 years (range 8-85 years), were examined using a digital subtra
ction imaging technique. 13 patients went on to have an interventional
procedure, stone removal or duct dilatation. The role of DSI imaging
in sialography and its use in facilitating interventional procedures o
n the salivary glands are discussed.