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Table 1 showing the 6 models and their corresponding ICCs. The average ICC of the two observers was used. Native T1 and ECV have excellent reproducibility, particularly when model F is used where one mid level and one basal level are selected, and the acquisitions repeated twice both before and after gad, allowing for the generation of 4 native (2 basal and 2 mid) and 4 post gad maps. Given the increased reproducibility, at the only expense of two extra short breathholds, repeating each slice twice could be routinely considered in all scans where T1 maps are undertaken.

From: Reproducibility of T1 mapping 11-heart beat MOLLI Sequence

Intrastudy and intersudy reproducibility

     

Native T1 myocardium

Post gad T1 myocardium

λ

ECV

INTRASTUDY

Basal Level

Repeated

Mid Level

Repeated

ICC

ICC

ICC

ICC

Model A

  

x

 

0.96

0.83

0.79

0.90

Model B

x

   

0.95

0.87

0.72

0.91

Model C

x

 

x

 

0.94

0.87

0.54

0.86

INTERSTUDY

Basal Level

Repeated

Mid Level

Repeated

ICC

ICC

ICC

ICC

Model A

  

x

 

0.90

0.71

0.50

0.82

Model B

x

   

0.77

0.70

0.39

0.77

Model C

  

x

x

0.84

0.81

0.73

0.90

Model D

x

x

  

0.80

0.76

0.67

0.89

Model E

x

 

x

 

0.90

0.71

0.54

0.86

Model F

x

x

x

x

0.88

0.79

0.80

0.93