Echocardiography: AV-plane displacement obtained by "frozen image" sector scan technique, in two positions: M2 and M3.
| frozen image | ||
| Person No. | M2' | M3' |
| 1 | 15,24 | 19,15 |
| 2 | 17,20,20 | 19,19,19 |
| 3 | 21,22 | 17,24 |
| 4 | 10,13 | 11,13 |
| 5 | 18,17,19 | 18,19,16 |
| 6 | 19 | 17 |
| 7 | 17,20,17 | 16,20,14 |
| 8 | 17,14 | 13,12 |
| 9 | 16 | 16 |
| m | 17.6 | 16.7 |
| +/- I | 1.6 | 1.6 |