Authors
Kristen M Kennedy, Kirk I Erickson, Karen M Rodrigue, Michelle W Voss, Stan J Colcombe, Arthur F Kramer, James D Acker, Naftali Raz
Publication date
2009/10/1
Journal
Neurobiology of aging
Volume
30
Issue
10
Pages
1657-1676
Publisher
Elsevier
Description
Regional manual volumetry is the gold standard of in vivo neuroanatomy, but is labor-intensive, can be imperfectly reliable, and allows for measuring limited number of regions. Voxel-based morphometry (VBM) has perfect repeatability and assesses local structure across the whole brain. However, its anatomic validity is unclear, and with its increasing popularity, a systematic comparison of VBM to manual volumetry is necessary. The few existing comparison studies are limited by small samples, qualitative comparisons, and limited selection and modest reliability of manual measures. Our goal was to overcome those limitations by quantitatively comparing optimized VBM findings with highly reliable multiple regional measures in a large sample (N=200) across a wide agespan (18–81). We report a complex pattern of similarities and differences. Peak values of VBM volume estimates (modulated density) produced …
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