Suppression of Radiofrequency Interference in Cardiac Gated MRI: a Simple Design

Overview

Journal Magn Reson Med

Publisher Wiley

Specialty Radiology

Date 1988 Sep 1

PMID 3173072

Citations 16

Authors

A N Shetty

Affiliations

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Abstract

A simple design is proposed to suppress the noise pickup in the ECG leads from RF and gradient pulses during NMR imaging. The ECG signal is passed through a low-pass filter and a common-mode-rejection amplifier to reduce erroneous signal generated by the electrical ground loops. The output is gated through a CMOS switch to blank the preamplifier from the NMR during data acquisition.

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