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Machine learning-based Alzheimer’s disease Designation (MAD)

 

This SPM extension evaluates whether the given brain FDG PET images “look like” an Alzheimer’s disease (AD) patient’s or not (non-AD).

 

The brain FDG PET images must be already pre-processed (normalized and smoothed with [8 8 8]mm Gaussian filter) using SPM12 (with “old normalize” routine on to a PET template). Please note that the original study was conducted without structural MRI co-registration.

 

The program computes subject scores and labels (AD vs. non-AD) estimated by 5 different algorithms described in [1].

1.  General Linear Model

2.  Scaled Subprofile Modeling - single principal component

3.  Scaled Subprofile Modeling - linearly regressed principal components

4.  Support Vector Machine – Iterative Single Data Algorithm

5.  Support Vector Machine – Sequential Minimal Optimization

 

The package contains MAT file (~1GB). Please contact us for further instructions on how to download the software package.

Requirement: SPM12 must be installed running on MATLAB (with statistics toolbox).

Disclaimer:

The Software and code samples available on this website are provided "as is" without warranty of any kind, either express or implied. Use at your own risk.

 

Citation:[1] Katako A, Shelton P, Goertzen A, Levin D, Bybel B, Aljuaid M, Yoon HJ, Kang DY, Kim SM, Lee CS, Ko JH, “Machine learning identified an Alzheimer’s disease-related FDG-PET pattern which is also expressed in Lewy body dementia and Parkinson’s disease dementia,” Scientific Reports, vol. 8(1), pp.13236, September 2018.

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MAchine learning based prediction of COgnitive decline in Parkinson’s Disease patients with mild cognitive impairment (MACOPD)

 

This MATLAB script uses a Support Vector Machine (SVM) classifier to evaluate whether Parkinson’s Disease patients will develop Dementia (PDD)

or remain as stable mild cognitive impairment (MCI). The algorithm was trained in a set of 43 Parkinson’s Disease patients with clinically diagnosed

MCI. Within a 5-year follow-up period, 23 progressed to PDD diagnosis whereas 20 remained stable MCI. Also included is a voxel map in MNI

space of the linear predictor coefficients used to determine the diagnosis prediction. The FDG-PET images must be spatially normalized to MNI

space and smoothed with an 8mm Gaussian kernel. 

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The package contains MAT file (~1GB). Please contact us for further instructions on how to download the software package.

Requirement: SPM12 must be installed running on MATLAB (with statistics toolbox). 

Disclaimer:

The Software and code samples available on this website are provided "as is" without warranty of any kind, either express or implied. Use at your own risk. 

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Citation: Booth S, Park KW, Lee CS, Ko JH. Predicting cognitive decline in Parkinson's disease using FDG-PET-based supervised learning.

J Clin Invest. 2022 Oct 17;132(20):e157074. doi: 10.1172/JCI157074. PMID: 36040832; PMCID: PMC9566889. 

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