Student Theses

Date of Award

Spring 5-19-2026

Document Type

Thesis

Language

English

First Advisor

Professor Vinay A. Vaishampayan

Second Advisor

Professor Xin Jiang

Third Advisor

Professor Lihong Li

Abstract

This thesis presents a comprehensive framework for the automated tracking and visualization of articulatory movements based on magnetic resonance imaging (MRI) data. A well-known data analysis tool for markerless pose estimation, known as DeepLabCut, is investigated for this purpose. The performance of this tool is enhanced through the design and implementation of a pre-processor. DeepLabCut is a markerless pose estimation toolbox based on deep learning, which overcomes the issue of making manual annotations frame-by-frame. Limitations from manually marking the MRI images are addressed by implementing transfer learning with convolutional neural networks to achieve accurate, user-defined articulator tracking without markers. Current clinical and research approaches to assessing articulation rely on invasive markerbased tracking systems which significantly hinders applicability in routine medical imaging workflows. In addition, existing pose estimation methods are not optimized for medical imaging data or user-defined anatomical features in constrained MRI environments. This thesis develops and validates the automated tracking framework specifically adapted for MRI articulator data, enabling objective, quantifiable assessment of articulation for clinical diagnosis, treatment monitoring, and motor control research.

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