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Table 1 Results of 3DQRS and VCG Efficacy Tests at 1.5T, 3T, and 7T

From: Comparing 3DQRS and VCG approaches for ECG QRS detection within 1.5T, 3T and 7T MRI

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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%

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