Imaging has traditionally played a central role in the evaluation of patients with renal colic or hematuria Recently, multidetector computed tomographic (CT) urography has replaced conventional plain-film excretory urography (also known as intravenous pyelography or intravenous urography) as the diagnostic study of choice for these patients. Computed tomographic protocols to evaluate the urinary tract are tailored to answer specific clinical questions. Dedicated protocols.
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