This requires efficient use of scout or CAC images for determination of the shortest optimal scan length (usual range 128-160 mm) so that all cardiac structures are optimally visualized along the z-axis starting from 1cm above the left main artery origin to 1 cm below the diaphragm Prospective
ECG triggered image Obtaining images only during one acquisition phase ([+ or -] padding) of cardiac cycle (mid-diastole), rather than continuous imaging during the entire cardiac cycle for the majority of studies Low tube voltage settings Using the lowest tube voltage possible (preferably 80-100 kV, max.