VCUG is used to diagnose reflux and urinary tract abnormalities. Renal ultrasound is used to find evidence of renal scarring or obvious obstruction. If symptoms have clinically resolved, repeat urine cultures or microscopic analyses as tests of cure are not necessary. DMSA scanning is more sensitive for renal scarring than ultrasound, but it is more expensive and cumbersome and is not usually used for this purpose in clinical practice.
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