Changes for page Methodology
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... ... @@ -1,6 +1,6 @@ 1 -=== =**Overview** ====1 +=== **Overview** === 2 2 3 -This project developsa**tridimensionaldiagnosticframework**for**CNSdiseases**,incorporating **AI-powered annotationtools**toimprove**interpretability,standardization,andclinicalutility**. The methodology integrates**multi-modaldata**,including**genetic,neuroimaging,neurophysiological, andbiomarker datasets**, andapplies**machinelearning models**togenerate**structured, explainable diagnosticoutputs**.3 +This section describes the step-by-step process used in the **Neurodiagnoses** project to develop a novel diagnostic framework for neurological diseases. The methodology integrates artificial intelligence (AI), biomedical ontologies, and computational neuroscience to create a structured, interpretable, and scalable diagnostic system. 4 4 5 5 ---- 6 6 ... ... @@ -8,166 +8,102 @@ 8 8 9 9 ==== **Data Sources** ==== 10 10 11 -**Biomedical Ontologies & Databases:** 11 +* **Biomedical Ontologies**: 12 +** Human Phenotype Ontology (HPO) for phenotypic abnormalities. 13 +** Gene Ontology (GO) for molecular and cellular processes. 14 +* **Neuroimaging Datasets**: 15 +** Example: Alzheimer’s Disease Neuroimaging Initiative (ADNI), OpenNeuro. 16 +* **Clinical and Biomarker Data**: 17 +** Anonymized clinical reports, molecular biomarkers, and test results. 12 12 13 -* **Human Phenotype Ontology (HPO)** for symptom annotation. 14 -* **Gene Ontology (GO)** for molecular and cellular processes. 15 15 16 -**D imensionality ReductionandInterpretability:**20 +==== **Data Preprocessing** ==== 17 17 18 -* **Evaluate interpretability** using metrics like the **Area Under the Interpretability Curve (AUIC)**. 19 -* **Leverage DEIBO (Data-driven Embedding Interpretation Based on Ontologies)** to connect model dimensions to ontology concepts. 22 +1. **Standardization**: Ensure all data sources are normalized to a common format. 23 +1. **Feature Selection**: Identify relevant features for diagnosis (e.g., biomarkers, imaging scores). 24 +1. **Data Cleaning**: Handle missing values and remove duplicates. 20 20 21 -**Neuroimaging & EEG/MEG Data:** 22 - 23 -* **MRI volumetric measures** for brain atrophy tracking. 24 -* **EEG functional connectivity patterns** (AI-Mind). 25 - 26 -**Clinical & Biomarker Data:** 27 - 28 -* **CSF biomarkers** (Amyloid-beta, Tau, Neurofilament Light). 29 -* **Sleep monitoring and actigraphy data** (ADIS). 30 - 31 -**Federated Learning Integration:** 32 - 33 -* **Secure multi-center data harmonization** (PROMINENT). 34 - 35 35 ---- 36 36 37 -==== **Annotation System for Multi-Modal Data** ==== 38 - 39 -To ensure **structured integration of diverse datasets**, **Neurodiagnoses** will implement an **AI-driven annotation system**, which will: 40 - 41 -* **Assign standardized metadata tags** to diagnostic features. 42 -* **Provide contextual explanations** for AI-based classifications. 43 -* **Track temporal disease progression annotations** to identify long-term trends. 44 - 45 ----- 46 - 47 47 === **2. AI-Based Analysis** === 48 48 49 -==== **M achineLearning &DeepLearning Models** ====30 +==== **Model Development** ==== 50 50 51 -**Risk Prediction Models:** 32 +* **Embedding Models**: Use pre-trained models like BioBERT or BioLORD for text data. 33 +* **Classification Models**: 34 +** Algorithms: Random Forest, Support Vector Machines (SVM), or neural networks. 35 +** Purpose: Predict the likelihood of specific neurological conditions based on input data. 52 52 53 - ***LETHE’scognitiverisk predictionmodel**integrated into theannotationframework.37 +==== **Dimensionality Reduction and Interpretability** ==== 54 54 55 -**Biomarker Classification & Probabilistic Imputation:** 39 +* Leverage [[DEIBO>>https://drive.ebrains.eu/f/8d7157708cde4b258db0/]] (Data-driven Embedding Interpretation Based on Ontologies) to connect model dimensions to ontology concepts. 40 +* Evaluate interpretability using metrics like the Area Under the Interpretability Curve (AUIC). 56 56 57 -* **KNN Imputer** and **Bayesian models** used for handling **missing biomarker data**. 58 - 59 -**Neuroimaging Feature Extraction:** 60 - 61 -* **MRI & EEG data** annotated with **neuroanatomical feature labels**. 62 - 63 -==== **AI-Powered Annotation System** ==== 64 - 65 -* Uses **SHAP-based interpretability tools** to explain model decisions. 66 -* Generates **automated clinical annotations** in structured reports. 67 -* Links findings to **standardized medical ontologies** (e.g., **SNOMED, HPO**). 68 - 69 69 ---- 70 70 71 -=== **3. Diagnostic Framework & Clinical Decision Support** ===44 +=== **3. Diagnostic Framework** === 72 72 73 -==== ** TridimensionalDiagnostic Axes** ====46 +==== **Axes of Diagnosis** ==== 74 74 75 - **Axis1:Etiology(PathogenicMechanisms)**48 +The framework organizes diagnostic data into three axes: 76 76 77 -* Classification based on **genetic markers, cellular pathways, and environmental risk factors**. 78 -* **AI-assisted annotation** provides **causal interpretations** for clinical use. 50 +1. **Etiology**: Genetic and environmental risk factors. 51 +1. **Molecular Markers**: Biomarkers such as amyloid-beta, tau, and alpha-synuclein. 52 +1. **Neuroanatomical Correlations**: Results from neuroimaging (e.g., MRI, PET). 79 79 80 -** Axis 2: Molecular Markers & Biomarkers**54 +==== **Recommendation System** ==== 81 81 82 -* **Integrationof CSF, blood,and neuroimagingbiomarkers**.83 -* **Structured annotation** highlights**biological pathwayslinkedtodiagnosis**.56 +* Suggests additional tests or biomarkers if gaps are detected in the data. 57 +* Prioritizes tests based on clinical impact and cost-effectiveness. 84 84 85 -**Axis 3: Neuroanatomoclinical Correlations** 86 - 87 -* **MRI and EEG data** provide anatomical and functional insights. 88 -* **AI-generated progression maps** annotate **brain structure-function relationships**. 89 - 90 90 ---- 91 91 92 -=== **4. Computational Workflow & Annotation Pipelines** ===61 +=== **4. Computational Workflow** === 93 93 94 -==== **Data Processing Steps** ==== 63 +1. **Data Loading**: Import data from storage (Drive or Bucket). 64 +1. **Feature Engineering**: Generate derived features from the raw data. 65 +1. **Model Training**: 66 +1*. Split data into training, validation, and test sets. 67 +1*. Train models with cross-validation to ensure robustness. 68 +1. **Evaluation**: 69 +1*. Metrics: Accuracy, F1-Score, AUIC for interpretability. 70 +1*. Compare against baseline models and domain benchmarks. 95 95 96 -**Data Ingestion:** 97 - 98 -* **Harmonized datasets** stored in **EBRAINS Bucket**. 99 -* **Preprocessing pipelines** clean and standardize data. 100 - 101 -**Feature Engineering:** 102 - 103 -* **AI models** extract **clinically relevant patterns** from **EEG, MRI, and biomarkers**. 104 - 105 -**AI-Generated Annotations:** 106 - 107 -* **Automated tagging** of diagnostic features in **structured reports**. 108 -* **Explainability modules (SHAP, LIME)** ensure transparency in predictions. 109 - 110 -**Clinical Decision Support Integration:** 111 - 112 -* **AI-annotated findings** fed into **interactive dashboards**. 113 -* **Clinicians can adjust, validate, and modify annotations**. 114 - 115 115 ---- 116 116 117 -=== **5. Validation & Real-World Testing** ===74 +=== **5. Validation** === 118 118 119 -==== ** ProspectiveClinicalStudy** ====76 +==== **Internal Validation** ==== 120 120 121 -* **Multi-center validation** of AI-based **annotations & risk stratifications**. 122 -* **Benchmarking against clinician-based diagnoses**. 123 -* **Real-world testing** of AI-powered **structured reporting**. 78 +* Test the system using simulated datasets and known clinical cases. 79 +* Fine-tune models based on validation results. 124 124 125 -==== ** Quality Assurance & Explainability** ====81 +==== **External Validation** ==== 126 126 127 -* **Annotationslinked to structuredknowledgegraphs** forimprovedtransparency.128 -* **Interactive annotationeditor**allowsclinicianstovalidateAI outputs.83 +* Collaborate with research institutions and hospitals to test the system in real-world settings. 84 +* Use anonymized patient data to ensure privacy compliance. 129 129 130 130 ---- 131 131 132 132 === **6. Collaborative Development** === 133 133 134 -The project is **open to contributions**from**researchers, clinicians, and developers**.90 +The project is open to contributions from researchers, clinicians, and developers. Key tools include: 135 135 136 -**Key tools include:** 137 - 138 138 * **Jupyter Notebooks**: For data analysis and pipeline development. 139 -** Example: **probabilistic imputation**93 +** Example: [[probabilistic imputation>>https://drive.ebrains.eu/f/4f69ab52f7734ef48217/]] 140 140 * **Wiki Pages**: For documenting methods and results. 141 141 * **Drive and Bucket**: For sharing code, data, and outputs. 142 -* **Collaboration with related projects**: 143 -** Example: **Beyond the hype: AI in dementia – from early risk detection to disease treatment** 96 +* **Collaboration with related projects: **For instance: [[//Beyond the hype: AI in dementia – from early risk detection to disease treatment//>>https://www.lethe-project.eu/beyond-the-hype-ai-in-dementia-from-early-risk-detection-to-disease-treatment/]] 144 144 145 145 ---- 146 146 147 147 === **7. Tools and Technologies** === 148 148 149 -==== **Programming Languages:** ==== 150 - 151 -* **Python** for AI and data processing. 152 - 153 -==== **Frameworks:** ==== 154 - 155 -* **TensorFlow** and **PyTorch** for machine learning. 156 -* **Flask** or **FastAPI** for backend services. 157 - 158 -==== **Visualization:** ==== 159 - 160 -* **Plotly** and **Matplotlib** for interactive and static visualizations. 161 - 162 -==== **EBRAINS Services:** ==== 163 - 164 -* **Collaboratory Lab** for running Notebooks. 165 -* **Buckets** for storing large datasets. 166 - 167 ----- 168 - 169 -=== **Why This Matters** === 170 - 171 -* **The annotation system ensures that AI-generated insights are structured, interpretable, and clinically meaningful.** 172 -* **It enables real-time tracking of disease progression across the three diagnostic axes.** 173 -* **It facilitates integration with electronic health records and decision-support tools, improving AI adoption in clinical workflows.** 102 +* **Programming Languages**: Python for AI and data processing. 103 +* **Frameworks**: 104 +** TensorFlow and PyTorch for machine learning. 105 +** Flask or FastAPI for backend services. 106 +* **Visualization**: Plotly and Matplotlib for interactive and static visualizations. 107 +* **EBRAINS Services**: 108 +** Collaboratory Lab for running Notebooks. 109 +** Buckets for storing large datasets.