Novel mapping storage architecture enabling tens of thousands of channels on a personal computer platform

Francis X. Witkowski, Patricia A. Penkoske, Robert Plonsey, Katherine M. Kavanagh, Wayne R. Giles, Mark L. Spano, William L. Ditto

Research output: Contribution to journalConference articlepeer-review

Abstract

The electrophysiological mechanisms underlying cardiac arrhythmias are studied by determining the spatiotemporal progression of cardiac depolarization and repolarization, termed cardiac mapping. Analysis of transient events requires information to be obtained from multiple sites simultaneously. The most significant problem with the design of such systems has been the large amount of data storage required and the rapidity of the composite data stream. Mapping systems with 500 simultaneous channels are common, and 4,000 channel systems have been envisioned. We report a relatively simple approach to this data storage problem that uses commercially available frame grabber technology coupled to a personal computer. With this approach we have developed a storage system capable of 24,000 channels sampled at 1 Khz with 12 bit resolution. Hybrid mapping systems incorporating optical recording systems utilizing voltage sensitive dyes from devices such as CCD cameras as well as conventional extracellular electrograms can simultaneously utilize this approach.

Original languageEnglish
Pages (from-to)1885-1886
Number of pages2
JournalAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
Volume5
StatePublished - 1996
EventProceedings of the 1996 18th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Part 4 (of 5) - Amsterdam, Neth
Duration: Oct 31 1996Nov 3 1996

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