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. Author manuscript; available in PMC: 2015 Nov 7.
Published in final edited form as: J Biomech. 2014 Sep 28;47(14):3475–3481. doi: 10.1016/j.jbiomech.2014.09.010

Figure 4.

Figure 4

(a) Tagged MR image from subject 1, slice 1 acquired using the standard approach. Breaks in the tag line (inside the red ellipse) can occur due to highly variable motion over time. When this occurs, motion tracking will not produce reliable results. (b) Tagged MRI acquired using the modified double trigger approach in subject 1, slice 1 at the time corresponding to peak deformation. The tag lines within the brain are continuous and can be used to accurately track motion and compute strain fields over time.