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• W4210360111 abstract "Purpose To investigate the usefulness of a novel computer-aided classification framework for the differential diagnosis of parkinsonian disorders (PDs) based on 11 C-methyl-N-2β-carbomethoxy-3β-(4-fluorophenyl)-tropanel ( 11 C-CFT) positron emission tomography (PET) imaging. Methods Patients with different forms of PDs—including Parkinson's disease (PD), multiple system atrophy (MSA) and progressive supranuclear palsy (PSP)—underwent dopamine transporter (DAT) imaging with 11 C-CFT PET. A novel multistep computer-aided classification framework—consisting of magnetic resonance imaging (MRI)-assisted PET segmentation, feature extraction and prediction, and automatic subject classification—was developed. A random forest method was used to assess the diagnostic relevance of different regions to the classification process. Finally, the performance of the computer-aided classification system was tested using various training strategies involving patients with early and advanced disease stages. Results Accuracy values for identifying PD, MSA, and PSP were 85.0, 82.2, and 89.7%, respectively—with an overall accuracy of 80.4%. The caudate and putamen provided the highest diagnostic relevance to the proposed classification framework, whereas the contribution of midbrain was negligible. With the exception of sensitivity for diagnosing PSP, the strategy comprising both early and advanced disease stages performed better in terms of sensitivity, specificity, positive predictive value, and negative predictive value within each PDs subtype. Conclusions The proposed computer-aided classification framework based on 11 C-CFT PET imaging holds promise for improving the differential diagnosis of PDs." @default.
• W4210360111 created "2022-02-08" @default.
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• W4210360111 date "2022-02-01" @default.
• W4210360111 modified "2023-10-17" @default.
• W4210360111 title "Computer-Aided Classification Framework of Parkinsonian Disorders Using 11C-CFT PET Imaging" @default.
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• W4210360111 doi "https://doi.org/10.3389/fnagi.2021.792951" @default.
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