Table 1 MRI images of the phantom of 12 different acquisitions have been registered with three different methods
From: Low-field magnetic resonance imaging offers potential for measuring tibial component migration
Acquisition (Reference acquisition) | medial-lateral migration(mm) | distal-proximal migration(mm) | posterior-anterior migration(mm) | flexion-extension migration (deg) | external-internal migration (deg) | varus-valgus migration (deg) |
|---|---|---|---|---|---|---|
MMRI-M | ||||||
1 (2) | −0.367 | 1.657 | 0.129 | −1.460 | 0.984 | 0.557 |
2 (3) | 0.241 | −1.313 | −0.446 | 0.682 | 0.681 | 1.846 |
3 (4) | −0.158 | 0.711 | −0.535 | 0.829 | −0.107 | −0.960 |
4 (5) | 0.857 | −0.209 | 0.359 | −1.183 | 0.386 | −0.952 |
5 (6) | −0.258 | −0.116 | −0.424 | 1.623 | −0.080 | 2.125 |
6 (7) | 0.912 | 0.426 | −0.428 | 2.272 | 1.039 | −0.748 |
7 (8) | −0.724 | −0.525 | 0.885 | −3.657 | −0.109 | −1.624 |
8 (9) | −0.146 | 1.334 | −0.699 | 0.518 | 0.570 | 0.456 |
9 (10) | −0.084 | −1.207 | −0.295 | −1.197 | −1.780 | −0.821 |
10 (11) | 1.231 | −0.372 | 0.985 | 0.775 | 0.712 | 0.291 |
11 (12) | 0.135 | 0.516 | −0.118 | 0.465 | 0.781 | 0.301 |
12 (1) | −0.105 | −0.642 | −0.833 | 0.939 | −1.252 | −0.398 |
μ(σ) | 0.128 (0.584) | 0.022 (0.931) | −0.118 (0.593) | 0.050 (1.630) | 0.152 (0.884) | 0.006 (1.147) |
MMRI-A | ||||||
1 (2) | 0.288 | −0.561 | 1.836 | 1.506 | 0.936 | −1.022 |
2 (3) | 1.571 | −2.674 | −2.178 | 2.964 | 0.900 | 6.187 |
3 (4) | −0.738 | 3.648 | 0.381 | −2.857 | 0.298 | −3.799 |
4 (5) | −0.040 | −2.650 | −0.001 | 0.952 | −0.840 | 1.247 |
5 (6) | −1.006 | −1.651 | −1.670 | −4.091 | −0.321 | 3.394 |
6 (7) | 1.210 | 0.226 | 1.094 | 1.968 | 1.573 | −3.264 |
7 (8) | 1.489 | 0.986 | 0.597 | 2.472 | 1.206 | −1.856 |
8 (9) | −2.071 | 0.131 | −0.667 | −5.606 | −1.682 | 0.943 |
9 (10) | −0.568 | 2.232 | −0.203 | 1.584 | −4.138 | 2.737 |
10 (11) | 0.535 | 0.079 | 0.495 | 0.628 | 1.160 | −0.290 |
11 (12) | 1.565 | −1.566 | −1.880 | 2.888 | 0.125 | 3.453 |
12 (1) | −0.470 | 1.964 | 1.167 | −2.522 | 0.393 | −7.439 |
μ(σ) | 0.147 (1.172) | 0.014 (1.974) | −0.086 (1.284) | −0.010 (2.952) | −0.033 (1.595) | 0.024 (3.774) |
MMRI-W | ||||||
1 (2) | −0.326 | −0.173 | 1.702 | 1.725 | −0.779 | −0.735 |
2 (3) | 1.315 | −0.736 | −1.071 | −0.359 | 1.727 | 0.665 |
3 (4) | 0.094 | 0.356 | −0.081 | 2.417 | 0.516 | −0.291 |
4 (5) | 0.467 | −0.804 | 0.716 | −0.789 | −0.416 | 0.502 |
5 (6) | −0.432 | 2.489 | −1.456 | −2.723 | −0.360 | −0.305 |
6 (7) | 1.229 | −3.267 | 0.182 | 4.319 | 0.750 | 0.416 |
7 (8) | 0.196 | 0.690 | −0.240 | −2.665 | 0.295 | 0.291 |
8 (9) | 0.369 | 1.619 | −0.062 | 2.500 | 0.206 | −0.068 |
9 (10) | −2.113 | 1.378 | 0.618 | −3.284 | −2.317 | −1.114 |
10 (11) | 0.577 | −1.102 | −0.718 | 0.452 | 0.553 | 0.383 |
11 (12) | 1.669 | 0.119 | −1.792 | 1.847 | 1.364 | 2.007 |
12 (1) | −1.414 | −0.956 | 0.746 | −2.623 | −1.781 | −1.790 |
μ(σ) | 0.136 (1.100) | −0.032 (1.518) | −0.121 (1.012) | 0.068 (2.527) | −0.020 (1.189) | −0.003 (0.967) |