A normal Gallbladder should be thin walled (<3mm) and anechoic.It is a pear shaped saccular structure for bile storage in the Right Upper Quadrant. Its size varies depending on the amount of bile. Fasted it will be approximately 10cm long.

Is it normal to have a thin walled gallbladder?

Fifty-four percent of patients had thin-walled gallbladders. Among patients with more severe acute disease, 56% had thin walls. Conversely, 24% of thin-walled gallbladders and 22% of thick-walled gallbladders had evidence of focal necrosis or gangrene.

How thick should the wall of the gallbladder be?

The normal gallbladder wall is less than 3 mm thick, shows low intensity on T2 and intermediate on T1 weighted sequences, and enhances homogeneously after the administration of intravenous contrast ⁶.