Fig. 4

In-vivo 2D and 3D image examples at low and high dose. a, b Cardiac region of interest from five ventricular slices (apex to base) of the 3D images at peak contrast enhancement in the right ventricle, left ventricle and myocardium for low and high dose. c, d Low and high dose 2D images at the same time points. Grayscale values in low and high dose images are individually scaled to the peak values in the left ventricle (a, b) and ascending aorta (c, d), respectively. e Enlarged myocardial region of interest for 3 slices at peak myocardial enhancement, as indicated by the dashed boxes in (a, b). f Close-up of ascending and descending aorta at peak blood pool enhancement in the 2D-AIF images (dashed boxes in (c, d))