Comparative assessment of left atrial volume in healthy cats by two-dimensional and three-dimensional echocardiography

Table 8 Overview of Bland-Altman analysis results

Methods compared	Bias	upper LOA	lower LOA
R4 vs L2	0.0320	1.063	−0.9989
R4 vs L4	−0.1816	0.7899	−1.153
R4 vs Biplane	−0.025	0.8717	−0.9217
R4 vs RTTPE	−0.025	0.8717	− 0.9217
R4 vs 4DTomTec™	−0.3388	0.7891	−1.467
L2 vs L4	−0.2136	0.6981	−1.125
L2 vs Biplane	−0.057	0.3977	−0.5117
L2 vs RTTPE	−0.2442	0.4469	−0.9353
L2 vs 4DTomTec™	−0.3708	0.551	−1.293
L4 vs Biplane	0.1566	0.6319	−0.3187
L4 vs RTTPE	−0.0306	0.7212	−0.7824
L4 vs 4DTomTec™	−0.1572	0.7369	−1.051
Biplane vs RTTPE	−0.1872	0.3797	−0.7541
Biplane vs 4DTomTec™	−0.3138	0.4862	−1.114
RTTPE vs 4DTomTec™	−0.1266	0.5576	−0.8108

Results of Bland-Altman comparison between LAMax results of 50 healthy cats measured with 6 echocardiographic methods: right parasternal 4 chamber view measured with 2D monoplane Simpson method of discs (R4), left apical two chamber view (L2) and four chamber view (L4) measured with 2D monoplane Simpson method of discs, L2 and L4 combined to biplane volumetry (Biplane), Real Time Triplane Echocardiography (RTTPE) and 4D-TomTec™ analysing software. (LOA = limit of agreement)

ISSN: 1746-6148