Importance of Reference Muscle Selection in Quantitative Signal Intensity Analysis of T2-Weighted Images of Myocardial Edema Using a T2 Ratio Method

Table 2

Correlation of edematous mass as measured by the T2 SI ratio in patients with acute MI in different muscle groups with infarct mass (5SD LGE); differences as per paired -test with corresponding value and Pearson’s correlation coefficient with value. Intraclass correlation coefficient for interrater reliability and intrarater agreement.

Acute reperfused MI	Difference T2-w versus visual analysis	Correlation with T2-w visual analysis	Interobserver difference	Interobserver correlation	Intraobserver difference	Intraobserver correlation
Muscle	Mean; ()	()	Mean; ()	ICC	Mean; ()	ICC
Serratus anterior	−6.8 ± 4.3; (0.118)	0.799; (<0.001)	1.23 ± 2.4; (0.142)	0.993	1.02 ± 3.6; (0.389)	0.981
Subscapularis	5.2 ± 5.6; (0.358)	0.669; (<0.001)	21.0 ± 15,; (0.001)	0.521	7.0 ± 14; (0.140)	0.879
Teres minor/infraspinatus	10.3 ± 6.7; (0.129)	0.579; (0.008)	9.6 ± 7.9; (0.004)	0.933	1.52 ± 13; (0.715)	0.943
Pectoralis	1.9 ± 5.4; (0.715)	0.675; (<0.001)	1.44 ± 5; (0.001)	0.988	4.83 ± 7; (0.059)	0.972