Table 5.
Motion correction strategies most relevant for renal ASL.
| Motion Correction Technique | Prospective | Retrospective | Extra Setup Time | Extra Scan Time | Patient-Friendly | Easily Available | Time-Consuming Post-Processing | |
|---|---|---|---|---|---|---|---|---|
| Breath-holding | Traditional | ✓ | ✗ | ✓ | ✓ | ✗ | ✓ | ✗ |
| Synchronized breathing | ✓ | ✗ | ✓ | ✓ | ✗ | ✓ | ✗ | |
| Respiratory-triggering (bellows) | ✓ | ✗ | ✓ | ✓ | ✓ | ✓ | ✗ | |
| MR-navigators | ✓ | ✗ | ✗ | ✓ | ✓ | ✗ | ✗ | |
| Snapshot Imaging | ✓ | ✗ | ✗ | ✗ | ✓ | ✓ | ✗ | |
| Background-suppression | ✓ | ✗ | ✗ | ✗ | ✓ | ✗ | ✗ | |
| Signal averaging | ✓ | ✓ | ✗ | ✓ | ✗ | ✓ | ✗ | |
| Data rejection | Visual sorting | ✗ | ✓ | ✗ | ✗ | ✓ | ✓ | ✓ |
| Automatic approaches | ✗ | ✓ | ✗ | ✗ | ✓ | ✗ | ✗ | |
| Image registration | ✗ | ✓ | ✗ | ✗ | ✓ | ✓ | ✓ | |
Check mark: Yes; ✗: No.