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Tolerance levels used in the Periodic Image Quality Test (PIQT) test that monitors spatial resolution
| Imaging sequence | Horizontal pixel (mm) | Vertical pixel (mm) |
|---|---|---|
| MS‐MESE | Echo 1: <1.3 | Echo 1: <1.5 |
| Echo 2: <1.3 | Echo 2: <1.5 |
Note: Frequency encoding is in the horizontal direction, phase encoding is in the vertical direction.
Abbreviation: MS‐MESE, multi‐slice multi‐echo spin‐echo.
