Diagnostic accuracy of coronary computed tomography angiography: a comparison between prospective and retrospective electrocardiogram triggering J Am Coll Cardiol 1 September Sep 2009 16 years ago Pontone G, Andreini D, Bartorelli AL, Cortinovis S, Mushtaq S, Bertella E,Annoni A, Formenti A, Nobili E, Trabattoni D, Montorsi P, Ballerini G, Agostoni P, Pepi M