title: Ultrasonography versus computed tomography for initial investigation of suspected nephrolithiasis.
abstract: Clinical question Is ultrasonography a safe and practical alternative to computed tomography for the initial investigation of suspected nephrolithiasis? Article chosen Smith-Bindman R, Aubin C, Bailitz J, et al. Ultrasonography versus computed tomography for suspected nephrolithiasis. N Engl J Med 2014;371(12):1100-10.
  
  
  OBJECTIVE
  To assess the safety and efficacy of ultrasonography as a first-line imaging investigation for patients with suspected nephrolithiasis.
authors.affiliation: *Department of Emergency Medicine,University of Calgary,Calgary, AB.
authors.forename: Katie
authors.initials: K
authors.lastname: Lin
authors.affiliation: *Department of Emergency Medicine,University of Calgary,Calgary, AB.
authors.forename: Shawn
authors.initials: S
authors.lastname: Dowling
mesh_terms: D000046:Academic Medical Centers; D000293:Adolescent; D000328:Adult; D000368:Aged; D002170:Canada; D004636:Emergency Service, Hospital; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D053040:Nephrolithiasis / Q000000981:diagnostic imaging* / Q000503:physiopathology / Q000628:therapy; D011446:Prospective Studies; D012720:Severity of Illness Index; D014057:Tomography, X-Ray Computed / Q000379:methods*; D018608:Ultrasonography, Doppler / Q000379:methods*; D014481:United States; D055815:Young Adult
keywords: computed tomography; diagnostic imaging; kidney calculi; nephrolithiasis; ultrasonography; ureteric calculi