1 July 2007 Three-dimensional panoramic imaging of cardiac arrhythmias in rabbit heart
Author Affiliations +
J. of Biomedical Optics, 12(4), 044019 (2007). doi:10.1117/1.2753748
Cardiac fluorescent optical imaging provides the unique opportunity to investigate the dynamics of propagating electrical waves during ventricular arrhythmias and the termination of arrhythmias by strong electric shocks. Panoramic imaging systems using charge-coupled device (CCD) cameras as the photodetector have been developed to overcome the inability to monitor electrical activity from the entire cardiac surface. Photodiode arrays (PDAs) are known to have higher temporal resolution and signal quality, but lower spatial resolution compared to CCD cameras. We construct a panoramic imaging system with three PDAs and image Langendorff perfused rabbit hearts (n=18) during normal sinus rhythm, epicardial pacing, and arrhythmias. The recorded spatiotemporal dynamics of electrical activity is texture mapped onto a reconstructed 3-D geometrical heart model specific to each heart studied. The PDA-based system provides sufficient spatial resolution (1.72 mm without interpolation) for the study of wavefront propagation in the rabbit heart. The reconstructed 3-D electrical activity provides us with a powerful tool to investigate the fundamental mechanisms of arrhythmia maintenance and termination.
Fujian Qu, Crystal M. Ripplinger, Vladimir Nikolski, Cindy Grimm, Igor R. Efimov, "Three-dimensional panoramic imaging of cardiac arrhythmias in rabbit heart," Journal of Biomedical Optics 12(4), 044019 (1 July 2007). http://dx.doi.org/10.1117/1.2753748


Personal digital assistants

Signal to noise ratio

Panoramic photography

Imaging systems

Action potentials

CCD cameras


High-throughput video processing ASICS for x-ray CCDs
Proceedings of SPIE (September 20 2007)
Effect of noise on photorefractive grating readout
Proceedings of SPIE (December 16 1992)
Tunable fiber confocal sensor with LED
Proceedings of SPIE (July 17 2015)
Stochastic structure estimation by motion
Proceedings of SPIE (November 01 1992)

Back to Top