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(a–c) Example results from one data set: (a) root mean squared error (RMSE) of absolute differences in λ over one cardiac cycle; (b) LV volumes from manual tracing (solid line), and OF tracking (dashed line) over one cardiac cycle; and (c) Relative difference maps between OF and manual tracing surfaces at end systole showing most of the surface under 10% (i.e. 0.1) difference.
