Plaque Tissue Morphology-Based Stroke Risk Stratification Using Carotid Ultrasound: A Polling-Based PCA Learning Paradigm

Journal of Medical Systems
Luca SabaJasjit S Suri

Abstract

Severe atherosclerosis disease in carotid arteries causes stenosis which in turn leads to stroke. Machine learning systems have been previously developed for plaque wall risk assessment using morphology-based characterization. The fundamental assumption in such systems is the extraction of the grayscale features of the plaque region. Even though these systems have the ability to perform risk stratification, they lack the ability to achieve higher performance due their inability to select and retain dominant features. This paper introduces a polling-based principal component analysis (PCA) strategy embedded in the machine learning framework to select and retain dominant features, resulting in superior performance. This leads to more stability and reliability. The automated system uses offline image data along with the ground truth labels to generate the parameters, which are then used to transform the online grayscale features to predict the risk of stroke. A set of sixteen grayscale plaque features is computed. Utilizing the cross-validation protocol (K = 10), and the PCA cutoff of 0.995, the machine learning system is able to achieve an accuracy of 98.55 and 98.83%corresponding to the carotidfar wall and near wall plaques, res...Continue Reading

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Citations

Jun 9, 2019·Journal of Medical Systems·Moloud AbdarVladimir Makarenkov
Apr 17, 2019·Medical & Biological Engineering & Computing·Narendra N KhannaJasjit S Suri
Nov 30, 2019·International Angiology : a Journal of the International Union of Angiology·Luca SabaJasjit S Suri
May 2, 2021·Ultrasound in Medicine & Biology·David ŠkoloudíkUNKNOWN ANTIQUE Trial Group
Jul 21, 2021·Expert Review of Neurotherapeutics·Giuseppe CorriasLuca Saba

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