Age and Sex-based Variations in kw, ATT, and CBF.
(A) kw maps, (B) CBF maps, and (C) ATT maps, average across three age groups: 8-35 years (Males: n=31, average age 23.0 years; Females: n=26, average age 22.7 years), 36-63 years (Males: n=28, average age 46.8 years; Females: n=28, average age 51.3 years), and 62-92 years (Males: n=30, average age 72.7 years; Females: n=43, average age 72.8 years). These maps are superimposed on T1w anatomical images. Corresponding average kw, CBF, and ATT values are provided beneath each map. Across the spectrum, kw values remained relatively consistent between males and females, though a marked reduction in kw can be observed in males aged 62-92 years. Patterns in the maps suggest an age-related a crease in CBF and increase in ATT, while males generally had lower CBF and longer ATT values compared to females.