Pulsatility index, mean flow, and 4D flow lumen area did not differ by Thal amyloid phase, Braak NFT stage, neuritic plaque score, presence of amygdalar TDP-43, cerebral amyloid angiopathy severity, atherosclerosis severity, arteriolosclerosis severity, nor white matter rarefaction severity (p > 0.09). Here, TARDBP is linked to amyloidosis.