Pertinent DWI features and artifacts when imaging near the skull base
| Imaging Parameter/Artifacts | DWI- EPI | DWI- HASTE | DWI- BLADE |
|---|---|---|---|
| Scanning timea | 0:40–3:40 | 4:00 | 4:09–5:20 |
| Resolution/contrast | Low | Moderateb | High |
| T2 blurringb | No effect | ↑ | ↓ |
| Motion sensitivity | ↓ | ↓ | ↓ |
| Off-resonance effects | ↑ | ↓ | ↓ |
| Susceptibility effects | ↑ | ↓ | ↓ |
| Ghosting | ↑ | ↓ | ↓ |
| Geometric distortion | ↑ | ↓ | ↓ |
a Represents a (minutes/seconds) range found in the literature for this application as well as actual scanning times for protocols used in our practice. No effort was made to normalize protocol parameters across investigators.
b HASTE image quality near the skull base is frequently degraded by T2 blurring. This impact can vary depending on T2 in the region and imaging parameters used.