. Author manuscript; available in PMC: 2023 Jun 11.

Published in final edited form as: J Am Soc Echocardiogr. 2022 Mar 1;35(7):738–751.e1. doi: 10.1016/j.echo.2022.02.010

Table 12.

Inter- and intraobserver differences (columns 2 and 3, respectively) and the corresponding percentage variabilities (columns 4 and 5) in measured parameters noted in a subgroup of 30 study subjects selected to assess measurement reproducibility

	Interobserver difference	Intraobserver difference	Interobserver % variability	Intraobserver % variability
MA size
AP diameter, cm	0.3 ± 0.2	0.2 ± 0.2	9 ± 7	8 ± 6
AL-PM diameter, cm	0.3 ± 0.2	0.2 ± 0.2	8 ± 6	6 ± 5
Circumference, cm	0.9 ± 0.8	0.7 ± 0.6	8 ± 7	6 ± 6
2D area, cm²	1.5 ± 1.1	1.1 ± 0.8	16 ± 12	13 ± 10
3D area, cm³	1.9 ± 2.0	1.4 ± 1.5	18 ± 16	14 ± 12
MA shape
NPA, °	11 ± 6	12 ± 14	7 ± 4	8 ± 9
Annular height, cm	0.19 ± 0.15	0.15 ± 0.13	25 ± 22	19 ± 17
Tenting volume, cm³	1.4 ± 0.9	0.5 ± 0.4	36 ± 20	18 ± 17
Tenting area, cm²	0.7 ± 0.4	0.4 ± 0.3	31 ± 15	20 ± 16
Tenting height, mm	2.7 ± 1.4	2.0 ± 1.4	27 ± 15	22 ± 16
Sphericity index (AP/AL-PM)	0.06 ± 0.04	0.08 ± 0.05	7 ± 5	9 ± 6
Mitral leaflets
Anterior leaflet area, cm²	1.1 ± 1.0	0.8 ± 0.6	17 ± 14	14 ± 10
Posterior leaflet area, cm²	1.4 ± 0.8	1.0 ± 0.7	23 ± 13	18 ± 14
Anterior leaflet length, cm	0.3 ± 0.2	0.4 ± 0.2	12 ± 9	14 ± 9
Posterior leaflet length, cm	0.4 ± 0.2s	0.3 ± 0.3	24 ± 14	24 ± 23