MRI shoulder protocol
| Oblique coronal PD | Coronal fat-suppressed sagittal T2 | sagittal T2 | Axial PD | Axial PD fat suppressed | |
|---|---|---|---|---|---|
| Swimmer’s | Adduction | Adduction | Adduction | Adduction | Adduction |
| position | Neutral rot. | Neutral rot. | Neutral rot. | Neutral rot. | Neutral rot. |
| Field of view (cm) | 13 | 13 | 13 | 15 | 15 |
| Repetition time (ms) | 3500 | 3500 | 3500 | 3500 | 3500 |
| Echo time (effective) (ms) | 34 | 90 | 50 | 34 | 34 |
| Slice thickness | 3 | 3 | 3 | 3 | 3 |
| Matrix size | 512×256 | 256×192 | 512×256 | 384×320 | 384×256 |
| Echo train | 8 | 10 | 10 | 8 | 8 |
| Bandwidth (kHz) | 25 | 20 | 20 | 20 | 2 |
| No of excitations | 2 | 3 | 2 | 2 | 2 |
The swimmers underwent an MRI of a single shoulder scanned, either the dominant shoulder if asymptomatic or the affected shoulder if symptomatic. Oblique coronal proton density (PD) and fat-suppressed T2, sagittal T2 and axial PD sequencing was performed on a Signa 1.5 T superconducting magnet, Hi Speed MRI unit (General Electric Medical Systems, Milwaukee, Wisconsin), using system software 9.1, slew rate 77 T/m/s, 33-mm T gradient amplitude, utilising a high-resolution, non-arthrographic technique with a four-channel phased array shoulder coil (Medical Advances, Milwaukee, Wisconsin). rot., rotation.