. Principal component analysis of FDG PET in amnestic MCI. Eur J Nucl Med Mol Imaging. 2008 Dec;35(12):2191-202. PubMed.

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  1. The authors are to be congratulated for applying multivariate statistics to analysis of PET data. There were 48 cases studied, 33 aMCI and 15 controls. The number of ROIs utilized as variables is not apparent in the abstract. It is hoped that appropriate constraints were followed in the relationship between number of cases and number of variables (ROIs in this case) entered into the multivariate analysis.

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