Ultrasonography versus Computed Tomography for Suspected Nephrolithiasis

N Engl J Med 2014; 371:1100-1110
September 18, 2014
DOI: 10.1056/NEJMoa1404446
http://www.nejm.org/doi/pdf/10.1056/NEJMoa1404446 [PDF]


Initial ultrasonography was associated with lower cumulative radiation exposure than initial CT, without significant differences in high-risk diagnoses with complications, serious adverse events, pain scores, return emergency department visits, or hospitalizations.


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