ABSTRACT
The normal gallbladder has a capacity of 30 to 50 mL (2). However, sonographic volume measurements are difficult to perform, and reported values (17-27 mL) for fasting volunteers vary widely (3).
FIGURE 2 A AND B ■ (A) Diagram of the normal biliary tree. (B) Gallbladder neck (G) and proximal cystic duct: longitudinal view demonstrating neck and slightly dilated proximal cystic duct (arrows). The serrated appearance of the walls of the cystic duct is secondary to valves of Heister.
