5‐4 Monitoring ECG Expression MR400 Instructions for Use
Prep the placement site(s) on the patient and then apply the
Quadtrode electrode to the patient.
See Preparing the Quadtrode Electrode Site on page 5‐11.
Attach the lead cable clips to the contacts on the Quadtrode
See Attaching the ECG Lead Cable on page 5‐12.
Evaluate the ECG signal strength and make adjustments as needed
before the patient enters the scanner.
See Checking the ECG Signal Strength on page 5‐16.
Position the patient, the lead cable and the wECG module for
See Positioning the ECG Lead Cable and wECG Module for Scanning
on page 5‐19.
Select the lead view and Filter Mode for the study.
See Changing the Lead View on page 5‐17 and Filter Mode on page
Before sliding patient inside the bore, or outside the MR magnet
room, establish a baseline recording of the patient's ECG signal.
Slide the patient into the bore, but do not start scanning. Then,
recheck the ECG waveform for usability by evaluating it for
If ECG waveform has become excessively distorted and the heart
rate numeric is not functioning properly in the bore, then the ECG
lead cable may require rerouting and / or a new electrode
placement site must be selected before starting the scan sequence.
(Also see Minimizing ECG Waveform Noise on page 5‐18.)