Table 3.

Intraobserver and Interobserver Variability for PMs Quantitative Analysis in Athletes With TWI

	Interobserver Variability		Intraobserver Variability
	ρ	ICC	ρ	ICC
Anterolateral papillary muscle
Orthogonal diameter 1	0.97	0.98	0.98	0.98
Orthogonal diameter 2	0.98	0.98	0.97	0.98
Area	0.96	0.98	0.96	0.97
Volume	0.96	0.94	0.95	0.93
Posteromedial papillary muscle
Orthogonal diameter 1	0.98	0.98	0.98	0.98
Orthogonal diameter 2	0.94	0.96	0.95	0.97
Area	0.92	0.94	0.93	0.94
Volume	0.89	0.91	0.90	0.92
PMs mass indexed	0.89	0.91	0.90	0.92
PMs mass/LV mass	0.88	0.90	0.91	0.91

ICC indicates intraclass correlation coefficient; LV, left ventricular; PMs, papillary muscles; and TWI, T‐wave inversion.