Table 1. MRI scan parameters for one stifle.
| MSME T2 Map | 3D DESS | Subtracted 3D CE-MRI | |
|---|---|---|---|
| Field of view (mm3) | 128×128×50 | 128×128×48 | 128×128×64 |
| Sampling matrix | 384×384×25 | 384×384×160 | 320×320×160 |
| Resolution (mm3) | 0.3×0.3×2.0 | 0.3×0.3×0.3 | 0.4×0.4×0.4 |
| TR / TEs (ms) | 4000 / [11.5, 23.0, 34.5, 46.0, 57.5, 69.0, 80.5, 92.0] | 22.9 / 7.5 | 7.9 / 3.5 |
| Flip angle (°) | 90/180 | 25 | 25 |
| Bandwidth (Hz/px) | 250 | 128 | 250 |
| Fat settings | Fat saturation | Water excitation | - |
| Scan time (min) | 16 | 16 | 5.5 (×2 scans) |
Scan parameters are for the 2- and 6-week post-operative time points (6- and 10-week-old piglets). To accommodate the larger size of the piglets at the 12-week post-operative time point (16-week-old piglets), the field-of-view for the T2 map was increased to 140×140×50 mm3 (giving 0.4×0.4×2.0 mm3 resolution) and the field-of-view for the 3D DESS was increased to 140×140×64 mm3 (giving 0.4×0.4×0.4 mm3 resolution); all other scan parameters were fixed. The subtracted CE-MRI sequence was only acquired for the 2-week post-operative time point.