Aging Effects on Cerebrovascular Response to Breath Holdings as Measured by Blood Oxygenation-Level Dependent MRI

Keywords

activation adults affect aging aimed alterations analyzed applied arrows arterial assumption blood blue bold brain brains branch breath breathing bright cardiovascular causes cerebral challenges clinical comparable comparing comprised considered constant consumption corrected correction cortical curve cycles delay deliver dependent detected determined diabetes disease disorder dynamic elderly elevated emission evaluate evaluating except expected extent extracted findings fitting flow fractional function functional furthermore general gradient gray green healthy heterogeneity hold holding holdings hospital hypertension identified identify induces inhalation kernel leads linear ling little major matrix measured medical medicine minute model motion much natural neurological normalization nucleus ones otherwise oxygen oxygenation paradigm period periodic positron preparation preprocessing previous problems program radiological radiology recently recruited regional regulated related repeated reserve resolution respectively response sample scanner scattered school sciences short shot significantly slice smaller smoothing spatial stage stress studies subject subjects surface tension threshold tomography twenty ultrastructure uncorrected vascular volumes white whole year young younger yuan