Subtraction sialography.
Subtraction sialography is described and demonstrated to be a simple yet helpful technique in evaluating the salivary glands. The improved visualization of the ductal system is demonstrated.
D006801:Humans; D010306:Parotid Gland / Q000000981:diagnostic imaging; D012796:Sialography / Q000379:methods*; D013382:Subtraction Technique