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The use of Design of Experiments and Machine Learning to Optimise 3D Bioprinted bone repair Scaffolds

Ghayadah, Al-Kharusi (2024) The use of Design of Experiments and Machine Learning to Optimise 3D Bioprinted bone repair Scaffolds. PhD thesis, Dublin City University.

Abstract
Osteoporosis represents a significant clinical challenge, particularly in the aging population, leading to a heightened risk of fractures and long-term disability. Traditional therapeutic strategies often fall short, necessitating innovative approaches for effective fracture repair. Tissue Engineering (TE) has emerged as a transformative approach in regenerative medicine, focusing on developing three dimensional structures to facilitate the regeneration of damaged tissues. This thesis presents an investigation into the optimisation of 3D bioprinted scaffolds for bone repair, using Design of Experiments (DoE) and Machine Learning (ML) methodologies. The work details the development of a bioprinted collagen-hydroxyapatite scaffold for bone TE applications. Utilising DoE, the research optimises parameters affecting scaffold printability, mechanical integrity, and rheological properties. A significant advancement is made in automating scaffold degradation measurement through image analysis tools, comparing the efficacy of ML models such as Convolutional Neural Networks (CNN) and Long Short-Term Memory (LSTM) networks in scaffold degradation prediction using image-derived and numerical data. The thesis lays out the development of a ML framework that can quantify the structural integrity and functionality of bioprinted scaffolds over time. By doing so, it addresses critical challenges in bone TE, like the optimisation of scaffold properties and the real-time monitoring of degradation processes. An integral contribution of this thesis is the construction of a user-friendly interface platform that predicts scaffold degradation. Moreover, the research successfully develops an image analysis tool capable of detecting changes in pore size and porosity within scaffolds, validated using micro-CT images.
Metadata
Item Type:Thesis (PhD)
Date of Award:August 2024
Refereed:No
Supervisor(s):Levingstone, Tanya, Dunne, Nicholas and Little, Suzanne
Uncontrolled Keywords:Bioprinting, Machine Learning, Bone Tissue Engineering
Subjects:Engineering > Mechanical engineering
Engineering > Electronic engineering
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Engineering and Computing > School of Mechanical and Manufacturing Engineering
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 License. View License
Funders:Science Foundation Ireland
ID Code:30250
Deposited On:19 Nov 2024 11:08 by Tanya Levingstone . Last Modified 19 Nov 2024 11:08
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Creative Commons: Attribution-Noncommercial-No Derivative Works 4.0
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