Table 4 Phantom mean measurements ± standard deviation of different TR using T2 and T2* sequences.

From: Optimisation of T2 and T2* sequences in MRI for better quantification of iron on transfused dependent sickle cell patients

Sequence

TR

1%

2%

3%

4%

5%

20%

T2

TR 212

49.47 ± 0.48

25.32 ± 0.11

16.56 ± 0.22

12.78 ± 0.07

10.06 ± 0.13

5.99 ± 0.33

TR 245

49.83 ± 0.55

25.51 ± 0.11

16.72 ± 0.22

12.84 ± 0.06

10.10 ± 0.12

4.83 ± 0.40

TR 330

49.88 ± 0.23

25.73 ± 0.35

17.07 ± 0.31

13.06 ± 0.23

10.10 ± 0.13

3.99 ± 0.58

TR 400

50.09 ± 0.19

26.50 ± 0.40

17.49 ± 0.32

13.50 ± 0.20

10.84 ± 0.14

4.72 ± 0.87

TR 500

50.15 ± 0.19

26.67 ± 0.40

17.66 ± 0.34

13.51 ± 0.29

10.84 ± 0.15

3.91 ± 1.41

T2*

TR 100

40.52 ± 0.22

19.45 ± 0.12

13.05 ± 0.10

9.82 ± 0.04

8.26 ± 0.04

1.61 ± 0.09

TR 160

40.66 ± 0.28

19.69 ± 0.14

13.07 ± 0.18

9.72 ± 0.11

8.19 ± 0.05

1.66 ± 0.09

TR200

40.68 ± 0.34

19.73 ± 0.10

13.24 ± 0.06

9.72 ± 0.05

8.36 ± 0.02

1.75 ± 0.01

TR 230

40.72 ± 0.22

19.66 ± 0.19

13.38 ± 0.12

9.78 ± 0.11

8.13 ± 0.04

1.63 ± 0.13

TR 300

40.86 ± 0.34

19.70 ± 0.25

13.31 ± 0.13

9.74 ± 0.11

8.15 ± 0.12

1.82 ± 0.11

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