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. Author manuscript; available in PMC: 2014 Apr 24.
Published in final edited form as: Cardiovasc Eng Technol. 2013 Jun 25;4(4):520–534. doi: 10.1007/s13239-013-0158-2

Figure 4.

Figure 4

Selected points for the isotropic case. Isotropic tissue with unipolar stimulus (applied at black dot) exhibits circular wave fronts with center at the stimulus site. (a) Values of the ROC for points shown on the wave front of radius 2.05 mm corresponding to 41 nodes, the coordinates are from the origin (lower left corner) in a 200 × 200 node configuration. Methods used are DF, LS, and the 4E method which is undefined for points B (135°) and D (45°). (b) Values of the conduction velocity (CV), Vcvt corresponds to values measured using the empirical method and Vcvr are values obtained using the 4E method.