Magnetic resonance sialography may be helpful in the diagnosis of sialolithiasis  Findings on Magnetic resonance sialography suggestive of sialolithiasis include low signal regions outlined by saliva ( high signal regions) on T2 weighted images. MRI can distinguished acute from chronic obstruction.
Sialolithiasis MRI
Sialolithiasis CT
Sialolithiasis physical examination
Choledocholithiasis x ray
Choledocholithiasis MRI
Choledocholithiasis CT
Gallstone disease x ray
Primary sclerosing cholangitis CT