| Our results are : ( 1 ) Digital FPF system : high contrast resolution ( HCR ) is not affected by fluoroscopic mode , whereas low contrast resolution ( LCR ) is slightly decreased in the low mode . ( 2 ) The digital FPF system has 2 . 5 times better HCR than the conventional system , with 5 times lower dose in the fluoroscopy mode . ( 3 ) Median values of DAP , T and F , respectively , in coronary angiography ( CA ) are : 27 . 7 Gycm ( 2 ) , 4 . 1 min and 876 for the digital and 39 . 3 Gycm ( 2 ) , 5 . 3 min and 1600 for the conventional system . ^^^ Digital DAP in CA is reduced by 30 % , suggesting that a dose reduction in the FPF system is possible . ^^^ |