Diagnostic accuracy of coronary computed tomography angiography: a comparison between prospective and retrospective electrocardiogram triggering J Am Coll Cardiol 1 Settembre Set 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