TABLE 1.
Balanced sequence parameters for motility and anatomical MRI data. All subjects were scanned in prone position. Motility was captured using a 2D balanced turbo field‐echo sequence in healthy controls and a 2D coronal, balanced steady‐state free precession sequence in patients
| MR parameter | Motility | ||
|---|---|---|---|
| HC (Philips Achieva) | Patients (Philips Achieva) | Patients (Siemens Avanto) | |
| Scan type | Dynamic | Dynamic | Dynamic |
| Field strength | 3T | 3T | 1.5T |
| TR (ms) | 3.5 | 3.7 | 3.6–4.3 |
| TE (ms) | 1.7 | 1.8 | 1.8–2.2 |
| Flip angle | 20 | 20 | 47–64 |
| Field of view (mm) | 420 × 420 | Variable | Variable |
| Reconstructed spatial resolution (mm) | 2.5 × 2.5 | 2.5 × 2.5 | 2.5 × 2.5 |
| Slice thickness (mm) | 10 | 5 | 10 |
| MR parameter | Anatomical | ||
|---|---|---|---|
| HC (Philips Achieva) | Patients (Philips Achieva) | Patients (Siemens Avanto) | |
| Scan type | BTFE | BTFE | FISP |
| Field strength | 3T | 3T | 1.5T |
| TR (ms) | 2.5 | 2.5 | 3.5–4.3 |
| TE (ms) | 1.2 | 1.2–1.3 | 1.5–1.9 |
| Flip angle | 45 | 45 | 46 |
| Field of view (mm) | 400 × 400 | 268 × 224 | 256 × 166 |
| Acquired spatial resolution (mm) | 1.5 × 2 | 1.5 × 2 | 1.5 × 2 |
| Reconstructed spatial resolution (mm) | 1 × 1 | 1 × 1 | 1 × 1 |
| Slice thickness (mm) | 5 | 5 | 4 |
Abbreviations: BTFE, balanced turbo field echo; FISP, fast imaging with steady‐state precession; HC, healthy control; MRI, magnetic resonance imaging; TE, echo time; TR, repetition time.