Investigation of a Validation Technique for the Registration of 3D Points Directly to Subjects with Pectus Excavatum

Date of Award

Spring 2008

Document Type

Thesis

Degree Name

Master of Science (MS)

Department

Computational Modeling & Simulation Engineering

Program/Concentration

Modeling and Simulation

Committee Director

Frederic D. McKenzie

Committee Member

Yuzhong Shen

Committee Member

Jiang Li

Call Number for Print

Special Collections LD4331.E53 C86 2008

Abstract

Pectus excavatum (PE) is a congenital deformity that results in a "caved in" appearance of the chest wall. The cause of this condition is unknown, but research suggests that an in vivo investigation of the biomechanical properties of the costal cartilages of subjects with PE may offer insight. Force and deflection measurements are proposed as a way to obtain this data; however, accurate location of cartilage from the skin level would be required for such an effort. Given the multiple potential sources of error with this process, a validation procedure to ensure the appropriateness of the findings must be developed; this is the focus of this research. Subjects with uncorrected PE paiticipated in this research. Both computed tomography (CT) scans and 3D laser surface scans of a subject's chest area were used to develop the validation technique, which utilizes the iterative closest point (ICP) algorithm for registration. As a result, robust recommendations with respect to surface scan sweeps registration, mesh-to-point cloud sampling distance, surface scan acquisition, creation of the rib cage model from CT data, and an approach to rough model alignment prior to registration have been made. Future steps following this research include the investigation of accurate point identification on and data collection from a subject with PE.

Rights

In Copyright. URI: http://rightsstatements.org/vocab/InC/1.0/ This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).

DOI

10.25777/573z-e782

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