RAS
MR angiography
Investigation to exclude obstructive hydronephrosis
US
Investigation to define cause of ureteric obstruction
CT
Definitive for scrotal disease
US
Renal or ureteric injury (trauma)
CT
Bladder trauma
Contrast cystography (+/- CT)
Renal colic
KUB x-raynon-contrast enhanced CT definitive
Macroscopic haematuria (upper tract)
CT urography
Macroscopic haematuria (lower tract)
Cystoscopy
Commonest site for renal calculi
Vesico-ureteric junction