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Multi-slice representational learning of convolutional neural network for Alzheimer's disease classification using positron emission tomography

Authors
 Han Woong Kim  ;  Ha Eun Lee  ;  KyeongTaek Oh  ;  Sangwon Lee  ;  Mijin Yun  ;  Sun K Yoo 
Citation
 BIOMEDICAL ENGINEERING ONLINE, Vol.19(1) : 70, 2020-09 
Journal Title
 BIOMEDICAL ENGINEERING ONLINE 
Issue Date
2020-09
Keywords
Alzheimer’s disease ; Convolutional neural network ; Deep learning ; External validation ; F-18 FDG-PET/CT ; Feasibility study
Abstract
Background: Alzheimer's Disease (AD) is a degenerative brain disorder that often occurs in people over 65 years old. As advanced AD is difficult to manage, accurate diagnosis of the disorder is critical. Previous studies have revealed effective deep learning methods of classification. However, deep learning methods require a large number of image datasets. Moreover, medical images are affected by various environmental factors. In the current study, we propose a deep learning-based method for diagnosis of Alzheimer's disease (AD) that is less sensitive to different datasets for external validation, based upon F-18 fluorodeoxyglucose positron emission tomography/computed tomography (FDG-PET/CT). Results: The accuracy, sensitivity, and specificity of our proposed network were 86.09%, 80.00%, and 92.96% (respectively) using our dataset, and 91.02%, 87.93%, and 93.57% (respectively) using the Alzheimer's Disease Neuroimaging Initiative (ADNI) dataset. We observed that our model classified AD and normal cognitive (NC) cases based on the posterior cingulate cortex (PCC), where pathological changes occur in AD. The performance of the GAP layer was considered statistically significant compared to the fully connected layer in both datasets for accuracy, sensitivity, and specificity (p < 0.01). In addition, performance comparison between the ADNI dataset and our dataset showed no statistically significant differences in accuracy, sensitivity, and specificity (p > 0.05). Conclusions: The proposed model demonstrated the effectiveness of AD classification using the GAP layer. Our model learned the AD features from PCC in both the ADNI and Severance datasets, which can be seen in the heatmap. Furthermore, we showed that there were no significant differences in performance using statistical analysis.
Files in This Item:
T202004758.pdf Download
DOI
10.1186/s12938-020-00813-z
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Medical Engineering (의학공학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Nuclear Medicine (핵의학교실) > 1. Journal Papers
Yonsei Authors
Yoo, Sun Kook(유선국) ORCID logo https://orcid.org/0000-0002-6032-4686
Yun, Mi Jin(윤미진) ORCID logo https://orcid.org/0000-0002-1712-163X
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/180434
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