. Author manuscript; available in PMC: 2015 Nov 28.

Published in final edited form as: J Am Soc Echocardiogr. 2014 Jan 18;27(4):405–412. doi: 10.1016/j.echo.2013.12.011

Table 2.

Relationships between echocardiographic indices and MRI-derived RVEDV

Relationship between RVEDV and echo parameter	Coefficient of determination (R²)	P	Regression equation (selected relationship)
Linear dimensions
RVOT-1	0.57	< 0.001	RVEDV= 11×RVOT − 205
RVOT-2	0.47	< 0.001	–
RVOT-3	0.25	< 0.001	–
RVEDD basal	0.57	< 0.001	RVEDV= 8.5×RVEDDbase − 87
RVEDD mid	0.65	< 0.001	RVEDV= 8.4×RVEDDmid − 147
RV height	0.38	< 0.001	–
RV areas
RVEDA	0.78	< 0.001	RVEDV= 8.2×RVEDA −40
Relative RVEDA (RVEDA/LVEDA)	0.40	< 0.001
	(R²= 0.82 for relative RVEDV)		RVEDV/LVEDV= 1.5×(RVEDA/LVEDA)

Volumes are reported in mL and linear dimensions in mm.