Patent ID: 8659297

Claim:
A method of processing an electrical signal, comprising: transmitting, via at least one main lead, an electrical signal; capturing, via at least three noise leads, at least one noise reference signal as a measure of electromagnetic noise ambient to the at least one main lead; receiving, by a processing device, the electrical signal and the noise reference signal; processing, by the processing device, the electrical signal to cancel the noise reference signal from the electrical signal to obtain a processed electrical signal; and transmitting, by a transmitting device, the processed electrical signal as a trigger signal to a magnetic resonance imaging system, such that the magnetic resonance imaging system is able to capture at least one image based on the processed electrical signal, wherein the at least three noise leads includes a first noise lead including at least one conductive loop formed on a first plane, a second noise lead including at least one conductive loop formed on a second plane, and a third noise lead including at least one conductive loop formed on a third plane, wherein the first, second, and third planes are not parallel to one another.