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. Author manuscript; available in PMC: 2012 Feb 1.
Published in final edited form as: Heart Rhythm. 2010 Oct 27;8(2):295–303. doi: 10.1016/j.hrthm.2010.10.032

Figure 3. Bipolar atrial and ventricular intra-cardiac recordings obtained during RT-MRI scanning.

Figure 3

The tracing on top (red) represents an atrial bipolar intra-cardiac electrogram (1) and a far-field ventricular signal (2); the presence of the QRS (3) on the surface EKG (green) confirms the timing and location of these recordings (panel A). The tracing on top (red), demonstrates a ventricular bipolar intra-cardiac electrogram (1) superimposed (2) with a surface QRS (panel B).