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

Table 3

Extent of false positive edematous mass as measured by the T2 SI ratio in patients with chronic MI in different muscle groups; differences as per paired -test with corresponding value and intraclass correlation coefficient for interrater reliability and intrarater agreement.

Chronic reperfused MI	Interobserver difference	IIC interobserver correlation	Intraobserver difference	ICC intraobserver correlation
Muscle	Mean; ()	ICC	Mean; ()	ICC
Serratus anterior	0.30 ± 0.50; (0.065)	0.954	0.12 ± 0.36; (0.313)	0.98
Subscapularis	23 ± 30.0; (0.039)	0.328	23.2 ± 28.0; (0.027)	0.259
Teres minor/infraspinatus	1.91 ± 11.0; (0.580)	0.966	3.43 ± 8.6; (0.239)	0.974
Pectoralis	0.78 ± 5.6; (0.672)	0.983	2.95 ± 9.0; (0.349)	0.953