Method of improving the quality of an electrocardiogram obtained

Details Method of improving the quality of an electrocardiogram obtained Method of improving the quality of an electrocardiogram obtained

1989-03-30

1991-02-12

Cohen, Lee S.

Surgery

Truss

Pad

128653R, 128653SC, A61B 50402

Patent

active

049915800

ABSTRACT:
A method for improving the quality of electrocardiogram (ECG) signals for input to a cardiac monitor and obtained from a patient undergoing magnetic resonance imaging (MRI) wherein the ECG leads attached to the patient are exposed to rapidly changing magnetic fields produced by the MRI which induce relatively high levels of rapid voltage changes in the ECG leads, the method including the steps of conducting the ECG signals having MRI induced noise signals superimposed thereon to the input of a slew rate limiter (SRL) circuit having a preselected maximum slew rate, the circuit providing an output signal having a maximum dv/dt which is slightly greater than the maximum typical ECG dv/dt, connecting the output of the SRL circuit to the input of a low pass filter circuit having an attenuation above the ECG typical fundamental frequency and connecting the output of the low pass filter circuit to a cardiac monitor.

REFERENCES:
patent: 3903874 (1975-09-01), Shakespeare
patent: 4694837 (1987-09-01), Blakeley et al.
patent: 4763075 (1988-08-01), Weigert

Affiliated with

Also associated with

Rating

Method of improving the quality of an electrocardiogram obtained does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of improving the quality of an electrocardiogram obtained, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of improving the quality of an electrocardiogram obtained will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-13593