Cited 6 times since 2009 (0.4 per year) source: EuropePMC IEEE transactions on biomedical circuits and systems, Volume 3, Issue 5, 1 1 2009, Pages 332-338 Code-division-multiplexed electrical impedance tomography spectroscopy. McEwan A, Tapson J, van Schaik A, Holder DS
Electrical impedance tomography uses multiple impedance measurements to image the internal conductivity of an object, such as the human body. Code-division multiplexing is proposed as a new method that can provide simultaneous impedance measurements of the multiple channels. Code division provides clear advantages of a wide frequency range at reduced cost and reduced complexity of sources. A potential drawback is the lack of perfectly orthogonal code sets. This caused an increase of 0.62% in root-mean-square spectral error when two codes were used to record two impedance channels simultaneously on a low-pass filter network. The method described provides images and spectra which are equivalent to the conventional time-multiplexed method, with increases in frequency resolution and measurement speed which may be of benefit in some applications of electrical impedance tomography spectroscopy.
