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Erschienen in:
2015 | OriginalPaper | Buchkapitel
Local Surface Estimation from Arbitrary 3D Contour Sets for Aortic Quantification
verfasst von : Cosmin Adrian Morariu, Daniel Sebastian Dohle, Tobias Terheiden, Konstantinos Tsagakis, Josef Pauli
Erschienen in: Bildverarbeitung für die Medizin 2015
Verlag: Springer Berlin Heidelberg
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Possible future endovascular repair of aortic Type A dissections, which always also involve the ascending aorta (AA), implies custom-designed stent-grafts for each patient. Extraction of morphological parameters such as aortic diameters from an accurately reconstructed aortic volume proves essential for accomplishing this goal. Our contribution introduces a novel approach to local surface and normal estimation via implicit models. Given a sparse set of randomly positioned and oriented contours in 3D, we adapt a multi-level partition of unity (MPU) method, rescinding the existing MPU-related restriction of having contours in parallel planes. Radii and diameter measurements are evaluated based on a ground truth aortic volume for 11 patient CTA datasets.