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- Title
A Novel Ear Impression-Taking Method Using Structured Light Imaging and Machine Learning: A Pilot Proof of Concept Study with Patients' Feedback on Prototype.
- Authors
Chua, Kenneth Wei De; Yeo, Hazel Kai Hui; Tan, Charmaine Kai Ling; Martinez, Jose C.; Goh, Zhi Hwee; Dritsas, Stylianos; Simpson, Robert E.
- Abstract
Introduction: Taking an ear impression is a minimally invasive procedure. A review of existing literature suggests that contactless methods of scanning the ear have not been developed. We proposed to establish a correlation between external ear features with the ear canal and with this proof of concept to develop a prototype and an algorithm for capturing and predicting ear canal information. Methods: We developed a novel prototype using structured light imaging to capture external images of the ear. Using a large database of existing ear impression images obtained by traditional methods, correlation analyses were carried out and established. A deep neural network was devised to build a predictive algorithm. Patients undergoing hearing aid evaluation undertook both methods of ear impression-taking. We evaluated their subjective feedback and determined if there was a close enough objective match between the images obtained from the impression techniques. Results: A prototype was developed and deployed for trial, and most participants were comfortable with this novel method of ear impression-taking. Partial matching of the ear canal could be obtained from the images taken, and the predictive algorithm applied for a few sample images was within good standard of error with proof of concept established. Discussion: Further studies are warranted to strengthen the predictive capabilities of the algorithm and determine optimal prototype imaging positions so that sufficient ear canal information can be obtained for three-dimensional printing. Ear impression-taking may then have the potential to be automated, with the possibility of same-day three-dimensional printing of the earmold to provide timely access.
- Subjects
ARTIFICIAL neural networks; EXTERNAL ear; EAR canal; PROOF of concept; DENTAL impressions; MACHINE learning
- Publication
Journal of Clinical Medicine, 2024, Vol 13, Issue 5, p1214
- ISSN
2077-0383
- Publication type
Article
- DOI
10.3390/jcm13051214