What is the role of ultrasonography in the workup of overactive bladder (OAB) in children?

Updated: Apr 01, 2019
  • Author: Pamela I Ellsworth, MD; Chief Editor: Edward David Kim, MD, FACS  more...
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Ultrasonography of the kidneys and bladder is useful in assessing renal size, cortical thickness, hydronephrosis, and duplicated collecting systems and associated anomalies (ectopic ureters and ureteroceles). Ultrasonography of the bladder may be obtained before and after voiding to assess bladder emptying.

In addition, determination of bladder-wall thickness may be useful. [23, 24] A bladder wall cross-section of more than 3-4 mm measured at 50% of expected bladder capacity suggests underlying detrusor overactivity.

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