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. 2021 Mar 31;144(7):2214–2226. doi: 10.1093/brain/awab144

Table 1.

Area ratio of zone types with significant difference in Alzheimer’s disease

Zone type −0.3 s −0.2 s −0.1 s 0.0 s 0.1 s
Area ratio of zones compared to the whole brain
AD faster 0.333% 3.78% 7.35% 42.0% 11.0%
AD slower 0.522% 1.22% 6.38% 2.28% 9.64%
AD reversed 1.93% 5.30% 11.4% 7.38% 8.24%
Area ratio of zones intersecting with AβROI
AD faster 0.127% 3.29% 5.06% 47.6% 9.82%
AD slower 0.063% 1.58% 4.69% 2.72% 11.1%
AD reversed 0.697% 6.90% 22.4% 12.4% 4.88%

Time points are relative to the cardiovascular pulse arrival into the brain. For time points −0.5 s, −0.4 s, 0.2 s, and 0.3 s the area ratio is under 1% for all zones. AβROI = PET findings of increased amyloid-β accumulation in early Alzheimer's disease.