Spectral analysis of orbital colour Doppler imaging
| Normal values11 (cm/s) | Day 5 | Day 6 | Day 7 | Day 8 | Day 9 | Day 15 | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| RE | LE | RE | LE | RE | LE | RE | LE | RE | LE | RE | LE | ||
| CRA = central retinal artery, PCA = posterior ciliary artery, OA = ophthalmic artery, NR = not recordable. | |||||||||||||
| CRA systolic (cm/s) | 10.1+/−1.9 | 4.1 | 2.4 | 5.4 | 4.7 | 5.3 | 4.5 | 5.9 | 4.4 | 8.2 | 5.6 | 9.7 | 5.7 |
| CRA diastolic (cm/s) | 2.6+/−1.2 | 0.2 | 0.4 | 0.4 | 0.6 | 1.3 | 1.4 | 1.6 | 0.7 | 2.4 | 1.6 | 3.0 | 1.7 |
| CRA pulsatility index | 1.52 | 20.0 | 6.3 | 49.0 | 8.2 | 42.0 | 32.0 | 3.9 | 4.2 | 1.0 | 2.0 | 2.8 | 1.87 |
| PCA systolic (cm/s) | 12.4+/−4.2 | ||||||||||||
| Nasal | NR | NR | NR | NR | 4.2 | NR | 5.1 | NR | 7.7 | NR | 8.0 | NR | |
| Temporal | NR | NR | NR | NR | 3.1 | 7.2 | 4.8 | 9.1 | 7.4 | 9.4 | 7.4 | 5.0 | |
| PCA diastolic (cm/s) | 4.3+/−2.2 | ||||||||||||
| Nasal | NR | NR | NR | NR | 0.8 | NR | 0.4 | NR | 2.6 | NR | 2.3 | NR | |
| Temporal | NR | NR | NR | NR | 0.5 | 1.3 | 1.2 | 0.2 | 2.3 | 0.2 | 2.7 | 1.7 | |
| PCA pulsatility index | 1.09 | ||||||||||||
| Nasal | NR | NR | NR | NR | 1.8 | NR | 1.0 | NR | 1.3 | NR | 2.0 | NR | |
| Temporal | NR | NR | NR | NR | 7.7 | 3.0 | 3.1 | 3.9 | 1.7 | 2.2 | 1.9 | 3.0 | |
| OA systolic (cm/s) | 31.3+/−4.2 | 58.0 | 133.4 | 65.1 | 118.9 | 65.7 | 118.6 | 59.9 | 94.9 | 58.0 | 71.5 | 58.0 | 50.3 |
| OA diastolic (cm/s) | 8.3+/−3.9 | 19.3 | 31.9 | 16.9 | 37.7 | 21.3 | 16.9 | 19.3 | 23.7 | 23.2 | 11.6 | 20.3 | 10.3 |
| OA pulsatility index | 1.55 | 1.2 | 1.4 | 1.2 | 1.2 | 1.1 | 1.5 | 1.2 | 1.2 | 1.0 | 1.4 | 1.1 | 2.1 |