Unspecified Patricia Sabin Profile

Patricia Sabin

at Children's Hospital of Philadelphia

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Proceedings Article | 3 April 2023 Poster + Paper

Skeletal modeling of the tricuspid valve via cylindrical parameterization

Jared Vicory, Christian Herz, Maura Flynn, Alana Cianciulli, Patricia Sabin, Andras Lasso, Matthew Jolley, Beatriz Paniagua

Proceedings Volume 12464, 1246431 (2023) https://doi.org/10.1117/12.2654364

KEYWORDS: Image segmentation, Anatomy, Modeling, Heart, Statistical analysis

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Hypoplastic left heart syndrome is a severe congenital heart defect requiring surgical intervention shortly after birth. The surgery is complex and often leads to complications requiring additional surgeries. Understanding the relationship between the structure of the tricuspid valve and functional complications could lead to more powerful diagnostic and treatment options. Because the tricuspid valve does not have spherical topology, many traditional methods for creating boundary-based or skeleton-based shape models that require spherical parameterization of an object are not applicable unless individual leaflets are independently parameterized and then merged in a multi-object model. Instead we propose to create skeletal models (s-reps) of the entire tricuspid valve structure using a cylindrical parameterization. We modify a traditional cylindrical parameterization approach by adaptively changing angle sampling based on landmarks to produce anatomically relevant correspondence across a population of objects. From this we derive s-reps which yield an improved shape space and classification performance compared with previous approaches.

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