[Imaging of urinary lithiasis: "all in one"].
Urinary lithiasis is very common among the general population, with a high prevalence level. In rich countries it is mainly located inside the upper urinary tract. Helical CToperated with newer devices is the most accurate modality to provide all needed information: diagnosis of stone without contrast medium injection, morphology (size, number) and localization, diagnosis of urinary obstruction, urinary tract aspect and all kind of differential diagnosis in emergency. It must be used during follow up to diagnose residual fragments. Multiplanar reconstructions are essential for the clinicians; but diagnosis is interpreted by scrolling axial views with dynamic analysis on computer screen. Low-dose helical CT is today available. Helical CT provides an "all-in-one" examination. It should soon replace combined plain film-ultrasonography performed in an emergency context of renal colic and intravenous urography for pre- and post-treatment assessments.
Roy
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Service de Radiologie B-Chirurgie A, Hôpitaux universitaires de Strasbourg, Hôpital Civil, 1, place de l'Hôpital, BP 426, 67091 Strasbourg, France. catherine.roy@chru-strasbourg.fr
D003663:Decision Trees; D006801:Humans; D008279:Magnetic Resonance Imaging; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography; D014545:Urinary Calculi / Q000175:diagnosis* / Q000000981:diagnostic imaging