Table 3. Previously published studies of ONSD measured using MRI in healthy individuals.
| First author (reference) | Number* (mean age) | Nation | MRI sequence | Slice thickness (mm) | ONSD, mean±SD (95% CI, mm) |
|---|---|---|---|---|---|
| Mashima11 | 15 (N/A) | Japan | T2 FSE | 3 | 5.1±0.4 |
| Weigel12 | 32 (25 years) | Germany | T2 TSE / T2 HASTE | 3–5 | 5.7±0.6 |
| Lagrèze13 | 33 (25 years) | Germany | T2 HASTE | 3 | 5.72 (5.51–5.93) |
| Geeraerts10 | 36 (32 years) | UK | Proton density/ T2 TSE | 4 | 5.08±0.52 |
| Shoft0†18 | 86 (8.1 years) | Israel | Basic T2 sequence | 2.5–3.5 | 3.10–3.56 |
| Bäuerle14 | 15 (24.5 years) | Germany | T2 TSE / T2 HASTE | 2–3 | 5.69±0.77 (range, 4.7–7.9) |
| Current study | 314 (47.8 years) | South Korea | TOF-MRA source image | 1 | 4.71±0.40 (4.67–4.75) |
*Number of healthy individuals, †The ONSD was measured at 10 mm anterior to the optic foramina.
CI: confidence interval, FSE: fast spin-echo, HASTE: half-Fourier acquisition single-shot turbo spin-echo, MRA: magnetic resonance angiography, MRI: magnetic resonance imaging, N/A: not applicable, ONSD: optic nerve sheath diameter, SD: standard-deviation, T2: T2-weighted, TOF: time-of-flight, TSE: turbo spin-echo.