Summary

> The bladder appearance and position vary depending on fullness

> The bladder is an anechoic structure. It should be evaluated in both the transverse and longitudinal orientation.

> Bladder volume calculation requires three unique measurements

>> Length – sagittal plane

>> Depth (height) – sagittal or transverse plane

>> Width – transverse plane

> PVR greater than 10% of the pre-void bladder volume estimated bladder capacity is generally considered abnormal