Fig. 1From: Investigating heartbeat-related in-plane motion and stress levels induced at the aortic rootOblique sagittal and AA-perpendicular MRI images. The region in red colour corresponds to the aorta. Left: oblique sagittal MRI image showing the locations of different aortic sections. Right: the MRI image perpendicular to the AA for measuring its in-plane motion. MRI Sys and PDA Sys are the abbreviations for MRI reference system and PDA system respectivelyBack to article page