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Fig. 6A. —64-year-old woman with gallstones (not shown) and biliary dilatation (group III). Kinematic MR cholangiopancreatographic images obtained in this patient revealed intermittent but complete relaxation (arrow, D) of the distal common bile duct on several images. Appearance of distal end of common bile duct varies: blunted (A), papillary (B and C), and tapered (D). Suspicion that patient had obstructive lesion at distal end of common bile duct had been based on evidence seen on conventional static image (not shown).