Patent ID: 6675036
Filing Date: 2004-01-06
Classification: A61B,G01R

Abstract:
A diagnostic medical imaging device including a signal processor for removing additive electrical noise caused by a patient's respiration from a noisy bio-potential signal, the diagnostic medical imaging device comprising:an adaptive filter unit having a noise reference input for receiving a noise reference signal associated with the patient's respiration, a clean bio-potential input for receiving a clean bio-potential signal, and a filtered noise reference output for outputting a filtered noise reference signal; a summing node having a noisy bio-potential input for receiving the noisy bio-potential signal, a filtered noise reference input for receiving the filtered noise reference signal, and a clean bio-potential output for outputting the clean bio-potential signal; a feed-back loop that electrically couples the clean bio-potential output and the clean bio-potential input; and a feed-forward loop that electrically couples the filtered noise reference output and the input for receiving the filtered noise reference signal.