| HEVs vs. aMCI | HEVs vs. AD | HEVs vs. NPH | aMCI vs. AD | aMCI vs. NPH | AD vs. NPH |
---|
tCBF |
0.01
| NS | NS | NS |
<0.01
| 0.06 |
API |
<0.05
| NS | NS | NS | NS | NS |
Arterial pulse volume |
<0.01
| NS | NS | 0.06 |
<0.01
| NS |
VBF |
<0.01
| NS | NS | NS |
<0.01
| NS |
AV stroke volume |
<0.01
| NS | NS | NS | 0.05 | NS |
AV delay |
<0.01
|
<0.01
|
<0.01
| NS | NS | NS |
Aqueductal stroke volume | NS | NS |
<0.05
| NS | NS |
<0.05
|
- HEVs: Healthy elderly volunteers; aMCI: patients with amnesic mild cognitive impairment; AD: patients with Alzheimer's disease; NPH: patients with normal pressure hydrocephalus; tCBF: total cerebral arterial blood flow; API: arterial pulsatility index; VBF: venous blood flow; AV: arteriovenous. P values in bold are statistically significant. P values on a grey background are close to statistical significance. NS: not significant.