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Tractography based on diffusion tensor imaging (DTI) allows visualization of white matter tracts. In this study, protocols to reconstruct eleven major white matter tracts are described. The protocols were refined by several iterations of intra- and inter-rater measurements and identification of sources of variability. Reproducibility of the established(More)
OBJECTIVE To examine the cross-sectional relationship between physical performance and dementia in the oldest old (those ≥ 90 years of age). DESIGN Cross-sectional study. SETTING The 90+ Study is a population-based, longitudinal, epidemiologic study of aging and dementia performed at the University of California, Irvine, from January 1, 2003, through(More)
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