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Please use this identifier to cite or link to this item: http://hdl.handle.net/1974/5689

Title: Feature Based Registration of Ultrasound and CT Data of a Scaphoid
Authors: Koslowski, Brian

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Keywords: Feature-Based Registration
Issue Date: 2010
Series/Report no.: Canadian theses
Abstract: Computer assisted surgery uses a collection of different techniques including but not limited to: CT-guided, fluoroscopy-guided, and ultrasound-guided imaging which allows medical staff to view bony anatomy of a patient in relation to surgical tools on a computer screen. By providing this visual data to surgeons less invasive surgeries can be performed on a patient's fractured scaphoid. The data required for a surgeon to perform a minimally invasive surgery while looking only at a computer screen, and not directly at a patient's anatomy, will be provided by CT and ultrasound data. We will discuss how ultrasound and CT data can be used together to allow a minimally invasive surgery of the scaphoid to be performed. In this thesis we will explore two techniques of registering segmented ultrasound images to CT data; an Iterative Closest Point (ICP) approach, and an Unscented Kalman Filter-based Registration (UKF). We use two different ultrasound segmentation methods; a semi-automatic segmentation, and a Bayesian segmentation technique. The segmented ultrasound data is then registered to a CT volume. The success or failure of the registrations is measured by the error calculated in mapping the corresponding land- marks to one another and calculating the target registration error. The results show that the Unscented Kalman Filter-based registration using the Bayesian segmentation of ultrasound images has the least registration error, and has the most robustness to error in initial alignment of the two data sets.
Description: Thesis (Master, Computing) -- Queen's University, 2010-05-28 11:17:31.934
URI: http://hdl.handle.net/1974/5689
Appears in Collections:Queen's Graduate Theses and Dissertations
School of Computing Graduate Theses

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