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CardioCCD systems have been used to make
the following recordings:
 | Phase singularity analysis of ventricular fibrillation in a rabbit heart comprising(in columns) spatial maps of membrane potential, phase angle and singularity indicators. Interval between rows is 20 ms, corresponding to the delay between frames employed in calculating phase angle. The singularity map locates phase singularities and identifies direction of ‘rotation.’ Color indicates, respectively, membrane potential(from blue to red), phase angle (with purple as +_ 180 O) [((the plus and minus should be stacked on top of one another to for a scientific symbol and the O is a degree sign which should be super script))] and direction of ‘rotation (blue:clockwise – red:counterclockwise). Provided by Richard A. Gray, Ph.D., of the Cardiac Rhythm Management Laboratory, University of Alabama at Birmingham. | | |  | Isochrones of action potential event times in paced rabbit heart show wave propagation of activation, peak and repolarization. Colors indicating event times rise from blue to red and cover ranges of 72.6, 72.8 and 84.6 ms, respectively. The ‘chair’ figure identifies an action potential event on the trace inset (for the central pixel of the image) The color bar on the trace indicates membrane potential. Provided by Richard A. Gray, Ph.D., of the Cardiac Rhythm Management Laboratory, University of Alabama at Birmingham. | | |
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