Fig. 7.

78-year-old male patient with aortic stenosis planned for transcatheter aortic valve replacement. Pre-procedural sequential mode CCTA is performed showing a severe stair step artifact through a calcific plaque in the proximal LAD in standard mode reconstructions (a), which is eliminated with the ZeeFree algorithm (b). Semiautomatic quantitative plaque analysis in standard and ZeeFree reconstructions are shown (c,d) in both curved and short-axis reformations (inserts in c,d). Note the change in size and shape of the calcified plaque in ZeeFree reconstructions (standard total plaque volume=240.22 mm³; ZeeFree total plaque volume=222.8 mm³).