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. Author manuscript; available in PMC: 2019 Jan 1.
Published in final edited form as: IEEE Trans Biomed Eng. 2017 Apr 12;65(1):52–63. doi: 10.1109/TBME.2017.2688919

Fig. 3.

Fig. 3

Different target trajectories in the 3 × 3 × 3 cm3 experimental space. (a) cube: 537 sample points; (b) Helix: 455 sample points; (c) Fermats spiral: 553 sample points.