#Vascular changes impact VBM results through🩸blood or tissue oxygenation (https://t.co/ofm4KXqCOS) or cerebral 🩸 flow (CBF; https://t.co/YdyObXbVsW; https://t.co/T7UWPkJGZN). We tested such influences by analyzing CBF (using pulsed arterial spin labeling;
@MaraMather Last I looked, this was potentially linked to T2* and blood-flow sensitivity in structural images. IMSRM abstract from '14 pasted here and see https://t.co/Xlx9pryX6h https://t.co/jQsLeDfFPw . https://t.co/mTflA1UMic
"Limitation of MR imaging in longitudinal studies" http://t.co/0k9k9okIPW neurodegeneration > iron accumulation could cause similar effects?
Limitation of MR imaging in longitudinal studies http://t.co/0k9k9okIPW I'd add, in #MS iron accumulation could cause a similar effects
Problems w/ VBM: Changes in blood flow can masquerade as reductions in gray matter on T1-weighted scans http://t.co/EHKtdhZE