Table 3:
Preoperative morphologic MRI markers in 168 patients with iNPH
| All Patients | No. | Median/% (IQR) | Improved (Median/%) | Not Improved (Median/%) | P |
|---|---|---|---|---|---|
| Evans index | 0.41 (0.37–0.44) | 0.40 | 0.39 | NS | |
| Temporal horns (mm) | 9.1 (7.5–11.0) | 9.0 | 9.1 | NS | |
| Callosal angle | 68° (56°–81°) | 68° | 69° | NS | |
| Third ventricle width (mm) | 15.5 (13.3–18) | 15.4 | 16.5 | NS | |
| Fourth ventricle width (mm) | 14.7 (13.2–16.3) | 14.7 | 14.6 | NS | |
| Transport sulci (%) | 0 | 72 | 75 | 68 | NS |
| 1 | 17 | 19 | 11 | ||
| 2 | 8 | 6 | 14 | ||
| >2 | 3 | 0 | 7 | ||
| Dilated interhemispheric fissure (%) | 0 | 42 | 45 | 38 | NS |
| 1 | 49 | 45 | 54 | ||
| 2 | 9 | 10 | 8 | ||
| Obliterated sulci at vertex (%) | 36 | 36 | 35 | NS | |
| Dilated Sylvian fissure (%) | 0 | 28 | 31 | 22 | |
| 1 | 45 | 45 | 46 | ||
| 2 | 27 | 24 | 32 | ||
| DESH present (%) | 36 | 36 | 34 | NS | |
| Flow void sign (%) | 0 | 0 | 0 | 0 | |
| 1 | 30 | 30 | 26 | ||
| 2 | 42 | 37 | 47 | ||
| 3 | 28 | 35 | 27 | ||
| PVH (%) | 0 | 0 | 0 | 0 | NS |
| 1 | 57 | 58 | 49 | ||
| 2 | 26 | 25 | 29 | ||
| 3 | 17 | 17 | 22 | ||
| DWMH (%) | 0 | 0 | 0 | 0 | NS |
| 1 | 46 | 47 | 45 | ||
| 2 | 37 | 42 | 29 | ||
| 3 | 17 | 11 | 26 |
Note:—PVH indicates periventricular hyperintensities; DWMH, deep white matter hyperintensities; NS, not significant; IQR, interquartile range.