| Image feature | Variable | Response (% of total) |
| Dynamic image | Disturbed | 26 |
| Good | 74 | |
| Image development frame by frame | Poor | 3 |
| Medium | 3 | |
| Good | 94 | |
| MEF shape | Poor | 5 |
| Medium | 8 | |
| Good | 87 | |
| MEF area | R>L | 6 |
| R<L | 21 | |
| R = L | 73 | |
| MEF intensity | R>L | 5 |
| R<L | 31 | |
| R = L | 64 | |
| MEF missing parts right upper | No | 98 |
| Yes | 2 | |
| MEF missing parts right lower | No | 78 |
| Yes | 22 | |
| MEF missing parts left upper | No | 94 |
| Yes | 6 | |
| MEF missing parts left lower | No | 95 |
| Yes | 5 | |
| VRI final assessment | Regular | 66 |
| Irregular | 34 |
L, left; MEF, maximum energy frame; R, right; VRI, vibration response imaging.