Example Waveforms
Revision C, August 2013
E-3
Mouse with E-Resp™ cradle in 7.0 T field
The measured ECG waveform has signals superimposed from respiration and blood
flow. After the heart contracts (after the R-wave), flowing blood, which is ionic or
charged, moving in the strong static magnetic field creates a signal synchronous with
the R-wave (i.e. it is reproducible each heart beat).
The R-wave and other signals synchronous with the R-wave are removed from the
measured ECG waveform to give the E-Resp™ waveform. Note because the sweeps
are different, respiration in the ECG waveform appears compressed in the respiratory
waveform.
Output gates are generated for each R-wave because ECG was selected as the only
condition for the gating algorithm.
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