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Table 1 T2 relaxation time (ms) in the ischemic myocardium measured by T2-TSE and T2-GraSE mapping sequences at different time-points during the first week after ischemia/reperfusion

From: Fast T2 gradient-spin-echo (T2-GraSE) mapping for myocardial edema quantification: first in vivo validation in a porcine model of ischemia/reperfusion

T2 relaxation time (ms)

  

Baseline

R-120 min

R-24 h

R-Day4

R-Day7

Group 1 (Control)

TSE

47.7 (4.0)

    

GraSE

48.0 (4.7)

    

Group 2 (I/R-120 min)

TSE

48.7 (0.6)

73.3 (10.0)

   

GraSE

49.9 (2.5)

76.5 (7.8)

   

Group 3 (I/R-24 h)

TSE

46.5 (1.9)

72.4 (12.3)

45.9 (5.3)

  

GraSE

48.3 (4.8)

73.9 (10.0)

42.9 (4.5)

  

Group 4 (I/R-4 days)

TSE

45.9 (1.6)

73.5 (4.2)

42.7 (9.3)

55.1 (13.2)

 

GraSE

45.0 (3.7)

78.7 (10.8)

42.6 (8.5)

54.3 (14.1)

 

Group 5 (I/R-7 days)

TSE

47.2 (3.5)

72.6 (14.2)

47.0 (2.9)

64.9 (7.9)

78.4 (10.6)

GraSE

46.5 (3.0)

74.8 (14.4)

46.7 (4.9)

66.4 (8.3)

78.9 (11.7)

Pooled

TSE

47.2 (2.6)

72.9 (9.9)

45.2 (6.2)

60.0 (11.5)

78.4 (10.6)

GraSE

47.6 (3.9)

76.0 (10.3)

44.1 (6.1)

60.4 (12.6)

78.9 (11.7)

  1. Values are mean (standard deviation). I/R: ischemia/reperfusion. TSE: turbo spin echo. GraSE: gradient spin echo. CMR T2 relaxation times measured by T2-TSE mapping in the ischemic myocardium of these pigs have been reported [17]