Amsterdam MRI assessment of the Physis protocol for (peri)physeal characteristics of the radius and ulna
|
Scoring item |
MRI sequence |
Radius |
Ulna |
Grade 0 |
Grade 1 |
Grade 2 |
Grade 3 |
Grade 4 |
Grade 5 |
|
Epiphysis | |||||||||
|
Bone marrow oedema | |||||||||
|
1.1. Extent |
T2 Dixon, PD TSE SPAIR |
+ |
No oedema |
<50% of epiphyseal volume |
>50% of epiphyseal volume | ||||
|
1.2. Location |
T2 Dixon, PD TSE SPAIR |
+ |
No oedema |
Oedema adjacent to physis |
Oedema not adjacent to physis | ||||
|
1.3. Signal intensity |
T2 Dixon, PD TSE SPAIR |
+ |
No oedema |
1 (minimal signal intensity) |
2 |
3 |
4 |
5 | |
|
1.4. Visibility on 3D WATSc |
3D WATSc |
+ |
No oedema |
Oedema not visible |
Oedema visible | ||||
|
Physis | |||||||||
|
2. Thickness |
3D WATSc, T2 Dixon, PD TSE |
Normal |
Increased | ||||||
|
2.1. Compared with MC-1 proximal physis |
3D WATSc, T2 Dixon, PD TSE |
+ |
Not increased |
Twice as thick as MC-1 |
Three times as thick as MC-1 |
Four times as thick as MC-1 | |||
|
3. Signal intensity |
3D WATSc, T2 Dixon, PD TSE |
+ |
Normal signal intensity |
1 (minimal signal intensity) |
2 |
3 |
4 | ||
|
Metaphysis | |||||||||
|
4. Physeal border on metaphyseal side |
3D WATSc |
+ |
+ |
Undulating |
Slightly irregular |
Distinctly irregular | |||
|
5. Metaphyseal intrusions |
3D WATSc |
+ |
+ |
Absent |
Present | ||||
|
5.1. Connection of intrusion with physis |
3D WATSc |
+ |
+ |
No intrusions |
Connected with physis |
Not connected with physis | |||
|
5.2. Depth of intrusions |
3D WATSc |
+ |
+ |
No intrusions |
<2 mm |
>2 mm | |||
|
Bone marrow oedema | |||||||||
|
5.3. Signal intensity |
T2 Dixon, PD TSE, 3D WATSc, PD TSE SPAIR |
+ |
+ |
No oedema |
1 (minimal signal intensity) |
2 |
3 |
4 |
5 |
3D WATSc, three-dimensional water-selective cartilage scan; MC-1, first metacarpal bone; PD, proton density; SPAIR, spectral attenuated inversion recovery; TSE, turbo spin-echo.