Title :
A Low-Cost High-Efficiency Fiber-Optic Coupler for Recording Action Potentials Within the Myocardial Wall
Author :
Idriss, S.F. ; Pitruzzello, A.M.
Author_Institution :
Dept. of Pediatrics, Duke Univ. Med. Center, Durham, NC
Abstract :
We present a high-efficiency, low-cost wavelength division multiplexer to record cardiac optical action potentials (APs) within the myocardial wall using optical fibers. APs with signal-to-noise ratio as high as 60, without spatial or temporal averaging, and as high as 200, with median-filtering, were recorded in rabbit ventricle
Keywords :
bio-optics; bioelectric potentials; biomedical equipment; cardiology; fibre optic sensors; optical fibre couplers; wavelength division multiplexing; cardiac optical action potentials; low-cost high-efficiency fiber-optic coupler; median filtering; myocardial wall; optical fibers; rabbit ventricle; wavelength division multiplexer; Biomedical optical imaging; Connectors; Fluorescence; Myocardium; Optical fiber couplers; Optical fiber devices; Optical fibers; Optical filters; Optical recording; Photodiodes; Cardiac electrophysiology; electrooptic transducers; fluorescence; optical mapping; voltage-sensitive dye; Action Potentials; Animals; Body Surface Potential Mapping; Equipment Design; Equipment Failure Analysis; Heart Conduction System; Microscopy, Fluorescence; Rabbits; Spectrometry, Fluorescence; Ventricular Function;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
DOI :
10.1109/TBME.2006.873758
