After review of the LAO view (5 minute acquisition time) it was decided that this looked like the gallbladder, so the CCK study could begin.
Using the same position as the previous LAO image, the computer was set-up for CCK infusion and acquisition. As the study was started it was noted that the gallbladder appeared.
In review the structure that was originally thought to be the gallbladder was most likely distended common bile duct.
Thanks to Larisa Levran