ArticleNeurology and therapy2025
Machine Learning for Predicting Thromboembolic Events Following Flow Diverter Treatment of Intracranial Aneurysms: A Multicenter Retrospective Study.
Article in Neurology and therapy, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
introductionFlow diverters (FD) have gradually become the preferred treatment option for complex and large intracranial aneurysms. Postoperative thromboembolic events (TEEs) are among the most common complications associated with endovascular treatment. However, widely applicable predictive tools for the occurrence of TEEs are currently lacking.
methodsThis retrospective study included clinical data from 377 patients (a total of 451 aneurysms) treated with flow diverters at two neurointerventional centers between June 2018 and September 2022. Thirty-nine baseline patient characteristics were included as clinical variables. The primary endpoint was the occurrence of postoperative ischemic events. The dataset was randomly divided into a training set (80%) and a testing set (20%). We performed fivefold cross-validation and applied Lasso regression to the training set to identify the most informative features. Multiple machine learning (ML) algorithms were employed to construct predictive models. Model performance was evaluated on the testing set using the area under the receiver operating characteristic curve (AUC-ROC), the area under the precision-recall curve (AUC-PR), and calibration plots. SHapley Additive exPlanations (SHAP) analysis was used to visualize feature contributions and to interpret individual case predictions.
resultsAmong 377 patients, 21 (5.6%) experienced TEEs. A machine learning model incorporating 10 variables was developed, with the support vector machine (SVM) model demonstrating the best performance-achieving an AUC-ROC of 0.96 and an AUC-PR of 0.88 in validation. The key predictive factors included aneurysm width, low-density lipoprotein (LDL) levels, hypertension, aneurysm location, triglycerides (TG), and diabetes. Additionally, a web-based tool was developed to assist clinicians in applying the model in practice.
conclusionsWe developed a machine learning model to predict the risk of TEEs following FD implantation for intracranial aneurysms, and demonstrated its clinical potential through internal validation. This tool can assist neurointerventionalists in estimating the probability of TEE occurrence based on patient clinical data and aneurysm characteristics, enabling the development of personalized treatment strategies.
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