Figure 5.

Automated procedure for the identification of  ${\hat{\mathit{s}}}_{\mathbf{\text{k,ECG}}}$. A template matching algorithm was employed for the identification of ${\hat{s}}_{\text{k,ECG}}$. The demixing matrix W obtained from the ECG signals acquired inside the MR scanner (x_k) was applied to the ECG signals acquired outside the MR scanner (x_k,out). A QRS template was generated from each IC. ${\hat{s}}_{\text{k,ECG}}$ was identified by cross-correlating each QRS template with the corresponding IC in ${\widehat{\mathbf{\text{s}}}}_k$.