What is ultrasonography of kidneys and what information does it provide?

Ultrasonography is imaging of body organs using sound waves. It is a painless investigation and doesn’t involve any radiation. Ultrasound kidneys, ureters and bladder (KUB) is ordered when some kidney problem is suspected. Ultrasound KUB provides information about:

• Kidney sizes
• Any swelling in the urinary tract e.g. antenatal hydronephrosis
• Congenital renal anomalies
• Complications of UTI
• Renal stones
• Renal Doppler to assess blood flow in renal vessels

What preparation is required before ultrasound KUB?

Usually no specific preparation is required. Sometime a child needs to be empty stomach for few hours before ultrasound. A full bladder may be required for additional information. Your doctor will give you specific instructions.