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Table 3 Optimal and worst susceptibility weighting parameters

From: Susceptibility-weighted cardiovascular magnetic resonance in comparison to T2 and T2 star imaging for detection of intramyocardial hemorrhage following acute myocardial infarction at 3 Tesla

 

Filter

Alpha

Beta

Sigma

ΔrSNR*

rSNR†

1

128

0.95

0.20

3

1.327

2.115

2

64

0.95

0.10

5

1.324

2.025

3

64

0.95

0.20

5

1.321

2.295

4

64

0.80

0.10

5

1.316

2.180

5

128

0.95

0.10

5

1.305

2.702

6

128

0.95

0.30

3

1.304

2.404

7

64

0.95

0.00

7.5

1.301

2.605

8

128

0.80

0.10

3

1.299

1.974

9

64

0.80

0.00

5

1.299

1.904

10

128

0.95

0.10

3

1.297

1.742

1056

128

0.20

0.55

75

0.005

4.019

1055

128

0.80

0.10

0.5

0.008

2.018

1054

64

0.40

0.00

1

0.009

2.528

1053

128

0.95

0.10

0.5

0.028

1.766

1052

64

0.80

0.10

0.5

0.029

2.158

1051

128

0.20

0.55

25

0.033

4.283

1050

64

0.95

0.00

1

0.039

1.270

1049

128

0.20

0.55

7.5

0.043

4.265

1048

128

0.21

0.20

15

0.052

4.255

1047

64

0.80

0.00

1

0.057

1.503

  1. n =10. Top 10 and bottom 10 values of *ΔrSNR difference between remote myocardium and IMH. †rSNR relative signal to noise ratio of IMH. Lower rSNR values indicate more hypointense IMH.