Urinary tract imaging.
Abstract 
This article reviews the current imaging investigations usually required in the work-up of common urinary tract problems such as urinary tract infection, colic, trauma, hematuria and renal failure. Radiological therapeutic techniques such as percutaneous nephrostomy for drainage of obstructed systems and percutaneous nephrolithotomy for treatment of renal calculi are briefly mentioned. The virtual elimination of percutaneous or open surgery for renal and upper urinary tract stones, resulting from the installation of the first and only Canadian extracorporeal shock wave lithotripter in the Department of Radiology at the Vancouver General Hospital is also discussed.