Adaptive cancellation of harmonic interferences in transcranial Doppler signal

Wojciech M. Zabolotny; Pawel Karlowicz; Jerzy Jurkiewicz

doi:10.1117/12.568907

22 July 2004 Adaptive cancellation of harmonic interferences in transcranial Doppler signal

Wojciech M. Zabolotny, Pawel Karlowicz, Jerzy Jurkiewicz

Proceedings Volume 5484, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments II; (2004) https://doi.org/10.1117/12.568907
Event: Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments II, 2003, Wilga, Poland

Abstract

This paper presents a method of improving the Transcranial Doppler (TCD) signal by removing harmonic interferences. Such interferences, originating from medical equipment using the high power HF signals are common in a clinical environment, especially in the neighborhood of the operating theater. The Adaptive Interference Canceler based on the NLMS FIR filter has been used. The reference signal was obtained by delaying of the original TCD signal. The presented method allows significant improvement of a seriously disturbed TCD signal.

Citation Download Citation

Wojciech M. Zabolotny, Pawel Karlowicz, and Jerzy Jurkiewicz "Adaptive cancellation of harmonic interferences in transcranial Doppler signal", Proc. SPIE 5484, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments II, (22 July 2004); https://doi.org/10.1117/12.568907

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