Figure 5: a) Automatic slice steering based on reconstructed wire geometry (top) and vascular information (bottom) with a non-moving wire. A slight jittering of the real-time slices can be seen in the top row where orientation of the slices changes between timepoints (see differences in blue circle). b) and c) Time series of real-time images, acquired with slice steering and while performing guidewire motion. The experiments were performed at different MRI sites using two different MRI phantoms.

Figure 3: An additional option allows to use a-priori information of pre-processed vessel masks and the envisioned path for intervention (a). A smoothed path representation is synchronized to the reconstructed wire geometry (b) and sample points are calculated based on the interventional path (c) with which the imaging plane information can be calculated (d). This allows to better align the real-time MRI slices to the vascular characteristics.