From: Comparing 3DQRS and VCG approaches for ECG QRS detection within 1.5T, 3T and 7T MRI
– | 3DQRS | VCG-based | Marked | |||
---|---|---|---|---|---|---|
 | False Negative | False Positive | False Negative | False Positive | Total Beats | |
1.5T | PVC at 1.5T | 0 | 0 | 2 | 37 | 59 |
 | Percent of Total | 0.0% | 0.0% | 3.4% | 62.7% | – |
3T | – | – | – | – | – | – |
 | AF-Diagnosed #1 at 3T | 3 | 1 | 3 | 6 | 45 |
 | AF-Diagnosed #2 at 3T | 1 | 1 | 34 | 18 | 169 |
 | Exercising Athlete at 3T | 2 | 2 | 41 | 46 | 316 |
 | Total Count | 6 | 4 | 41 | 46 | 316 |
 | Percent of Total | 1.9% | 1.3% | 13.0% | 14.6% | – |
7T | – | – | – | – | – | – |
 | Healthy Subject #1 at 7T | 6 | 6 | 175 | 156 | 382 |
 | Healthy Subject #2 at 7T | 29 | 30 | 80 | 56 | 505 |
 | Total Count | 35 | 36 | 255 | 212 | 887 |
 | Percent of Total | 4.0% | 4.1% | 28.8% | 23.9% | – |