In:
Neurology, Ovid Technologies (Wolters Kluwer Health), Vol. 90, No. 12 ( 2018-03-20), p. e1029-e1037
Kurzfassung:
To evaluate the statistical parametric mapping (SPM) procedure for fluorodeoxyglucose (FDG)-PET imaging as a possible single-subject marker of progression to dementia in Parkinson disease (PD). Methods Fifty-four consecutive patients with PD without dementia (age at onset of 59.9 ± 10.1 years, disease duration of 5.3 ± 3.4 years) entered the study. The patients underwent an extensive motor and cognitive assessment and a single-subject FDG-PET SPM evaluation at baseline. A 4-year follow-up provided disease progression and dementia diagnosis. Results The FDG-PET SPM was evaluated by 2 expert raters allowing the identification of a “typical PD pattern” in 29 patients, whereas 25 patients presented with “atypical patterns,” namely, dementia with Lewy bodies (DLB)-like (n = 12), Alzheimer disease (AD)-like (n = 6), corticobasal syndrome (CBS)-like (n = 5), and frontotemporal dementia (FTD)-like (n = 2). At 4-year follow-up, 13 patients, all showing atypical brain metabolic patterns at baseline, progressed to dementia (PD dementia). The DLB- and AD-like SPM patterns were the best predictor for incident dementia ( p 〈 0.005, sensitivity 85%, specificity 88%), independently from demographics or cognitive baseline classification. Conclusions This study suggests that FDG-PET SPM at the single-subject level might help in identifying patients with PD at risk of developing dementia.
Materialart:
Online-Ressource
ISSN:
0028-3878
,
1526-632X
DOI:
10.1212/WNL.0000000000005161
Sprache:
Englisch
Verlag:
Ovid Technologies (Wolters Kluwer Health)
Publikationsdatum:
2018
