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*'''Choice of exammodality''': In the acute setting, [[ultrasonography in urolithiasis]] is the optimal first investigation rather than CT.<ref name="Smith-BindmanAubin2014">{{cite journal|last1=Smith-Bindman|first1=Rebecca|last2=Aubin|first2=Chandra|last3=Bailitz|first3=John|last4=Bengiamin|first4=Rimon N.|last5=Camargo|first5=Carlos A.|last6=Corbo|first6=Jill|last7=Dean|first7=Anthony J.|last8=Goldstein|first8=Ruth B.|last9=Griffey|first9=Richard T.|last10=Jay|first10=Gregory D.|last11=Kang|first11=Tarina L.|last12=Kriesel|first12=Dana R.|last13=Ma|first13=O. John|last14=Mallin|first14=Michael|last15=Manson|first15=William|last16=Melnikow|first16=Joy|last17=Miglioretti|first17=Diana L.|last18=Miller|first18=Sara K.|last19=Mills|first19=Lisa D.|last20=Miner|first20=James R.|last21=Moghadassi|first21=Michelle|last22=Noble|first22=Vicki E.|last23=Press|first23=Gregory M.|last24=Stoller|first24=Marshall L.|last25=Valencia|first25=Victoria E.|last26=Wang|first26=Jessica|last27=Wang|first27=Ralph C.|last28=Cummings|first28=Steven R.|title=Ultrasonography versus Computed Tomography for Suspected Nephrolithiasis|journal=New England Journal of Medicine|volume=371|issue=12|year=2014|pages=1100–1110|issn=0028-4793|doi=10.1056/NEJMoa1404446}}</ref>