Authors:
João L. Vilaça
1
;
Pedro L. Rodrigues
2
;
António H. J. Moreira
2
;
João Gomes Fonseca
3
;
A. C. M. Pinho
4
;
Jaime C. Fonseca
4
and
Nuno Rodrigues
5
Affiliations:
1
PT Government Associate Laboratory and Polytechnic Institute of Cávado and Ave, Portugal
;
2
PT Government Associate Laboratory and University of Minho, Portugal
;
3
PT Government Associate Laboratory, Portugal
;
4
University of Minho, Portugal
;
5
Polytechnic Institute of Cávado and Ave and University of Minho, Portugal
Keyword(s):
Pectus Carinatum, Nonoperative Treatment, 3D Image Processing, Mesh Processing.
Related
Ontology
Subjects/Areas/Topics:
Applications
;
Applications and Services
;
Computer Vision, Visualization and Computer Graphics
;
Geometry and Modeling
;
Image-Based Modeling
;
Medical Image Applications
;
Pattern Recognition
;
Software Engineering
Abstract:
Pectus Carinatum is a deformity of the chest wall, characterized by an anterior protrusion of the sternum, often corrected surgically due to cosmetic motivation. This work presents an alternative approach to the current open surgery option, proposing a novel technique based on a personalized orthosis. Two different processes for the orthosis’ personalization are presented. One based on a 3D laser scan of the patient chest, followed by the reconstruction of the thoracic wall mesh using a radial basis function, and a second one, based on a computer tomography scan followed by a neighbouring cells algorithm. The axial position where the orthosis is to be located is automatically calculated using a Ray-Triangle intersection method, whose outcome is input to a pseudo Kochenek interpolating spline method to define the orthosis curvature. Results show that no significant differences exist between the patient chest physiognomy and the curvature angle and size of the orthosis, allowing a bett
er cosmetic outcome and less initial discomfort.
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