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Proceedings Paper

Slice-to-volume parametric image registration models with applications to MRI-guided cardiac procedures
Author(s): L.W. Lorraine Ma; Mehran Ebrahimi
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Paper Abstract

A mathematical formulation for intensity-based slice-to-volume registration is proposed. The approach is flexible and accommodates various regularization schemes, similarity measures, and optimizers. The framework is evaluated by registering 2D and 3D cardiac magnetic resonance (MR) images obtained in vivo, aimed at real- time MR-guided applications. Rigid-body and affine transformations are used to validate the parametric model. Target registration error (TRE), Jaccard, and Dice indices are used to evaluate the algorithm and demonstrate the accuracy of the registration scheme on both simulated and clinical data. Registration with the affine model appeared to be more robust than with the rigid model in controlled cases. By simply extending the rigid model to an affine model, alignment of the cardiac region generally improved, without the need for complex dissimilarity measures or regularizers.

Paper Details

Date Published: 3 March 2017
PDF: 16 pages
Proc. SPIE 10135, Medical Imaging 2017: Image-Guided Procedures, Robotic Interventions, and Modeling, 1013520 (3 March 2017); doi: 10.1117/12.2254597
Show Author Affiliations
L.W. Lorraine Ma, Univ. of Ontario Institute of Technology (Canada)
Mehran Ebrahimi, Univ. of Ontario Institute of Technology (Canada)

Published in SPIE Proceedings Vol. 10135:
Medical Imaging 2017: Image-Guided Procedures, Robotic Interventions, and Modeling
Robert J. Webster III; Baowei Fei, Editor(s)

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