Table 2.
Overview of P-Values for all left atrial (LA) measurement methods
| Methods | LAMax | LAMin | EF | SV |
|---|---|---|---|---|
| R4 vs R4AL | < 0.0001 | < 0.0001 | 0.5814 | < 0.0001 |
| R4 vs L2 | 0.6690 | 0.3364 | 0.5530 | 0.9399 |
| R4 vs L4 | 0.0126 | < 0.0001 | < 0.0001 | 0.7380 |
| R4 vs Biplane | 0.7009 | 0.0045 | 0.0026 | 0.3092 |
| R4 vs RTTPE | 0.0042 | 0.0914 | 0.3076 | 0.0112 |
| R4 vs 4DTomTec™ | 0.0001 | 0.2473 | 0.0315 | < 0.0001 |
| L2 vs L4 | 0.0021 | < 0.0001 | < 0.0001 | 0.3003 |
| L2 vs Biplane | 0.0883 | < 0.0001 | < 0.0001 | 0.0541 |
| L2 vs RTTPE | < 0.0001 | 0.0006 | 0.5378 | 0.0005 |
| L2 vs 4DTomTec™ | < 0.0001 | 0.0869 | 0.1030 | < 0.0001 |
| L4 vs Biplane | < 0.0001 | < 0.0001 | < 0.0001 | 0.1972 |
| L4 vs RTTPE | 0.5752 | < 0.0001 | < 0.0001 | 0.0004 |
| L4 vs 4DTomTec™ | 0.0185 | 0.0007 | < 0.0001 | < 0.0001 |
| Biplane vs RTTPE | < 0.0001 | 0.3309 | < 0.0001 | < 0.0001 |
| Biplane vs 4DTomTec™ | < 0.0001 | 0.5469 | < 0.0001 | < 0.0001 |
| RTTPE vs 4DTomTec™ | 0.0135 | 0.9260 | 0.1949 | 0.0044 |
Comparison of left atrial maximum and minimum volumes (LAMax/LAMin), ejection fraction (EF) and stroke volume (SV) in 50 healthy cats measured with 7 echocardiographic methods: right parasternal 4 chamber view measured with 2D Area/Length method (R4AL) and 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), 4D-TomTec™ analysing software. Mean differences between the measurement-techniques were evaluated with a t-Test. P > 0.05 was evaluated as significant similarity and marked as bold letters