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Table 2 Comparison of T2 obtained by reference (long-TR) spin-echo sequences versus balanced steady state free precession (bSSFP) T2 mapping at 1.5 T (Siemens Aera) and 3 T (Siemens Prisma) on the final phantom (n = 1) at baseline

From: Developing a medical device-grade T2 phantom optimized for myocardial T2 mapping by cardiovascular magnetic resonance

Biological scope (Tube ID)

1.5 T

3 T

T2 mapping (ms)

Spin-Echo (ms)

Difference in ms (%)

T2 mapping (ms)

Spin-Echo (ms)

Difference in ms (%)

Short T2 native myocardium at both 1.5 T and 3 T (A)

43

35

8 (23%)

43

34

9 (27%)

Medium T2 native myocardium at 1.5 T (B)

49

43

6 (14%)

48

41

7 (17%)

Medium T2 native myocardium at 3 T (C)

47

42

5 (12%)

45

40

5 (13%)

Long T2 native myocardium at 1.5 T (D)

65

60

5 (8%)

65

59

6 (10%)

Long T2 native myocardium at 3 T (E)

65

61

4 (7%)

65

59

6 (10%)

Long-normal T2 native myocardium at 1.5 T (F)

57

52

5 (10%)

57

50

7 (14%)

Very long T2 native myocardium at 3 T (G)

74

70

4 (6%)

72

68

4 (6%)

Mildly long T1 & T2 native myocardium at 1.5 & 3 T (H)

57

52

5 (10%)

56

51

5 (10%)

Medium T1 & T2 post-GBCA* myocardium at 1.5 & 3 T (I)

56

41

15 (37%)

56

40

16 (40%)

  1. Corner tubes are highlighted in bold
  2. TR repetition time. Other abbreviations as in Table 1