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SPIE - The Society of Photo-optical Instrumentation Engineers
Doi
Abstract
Pectus excavatum is the most common congenital deformity of the anterior thoracic wall. The surgical correction of such deformity, using Nuss procedure, consists in the placement of a personalized convex prosthesis into sub-sternal position to correct the deformity. The aim of this work is the CT-scan substitution by ultrasound imaging for the pre-operative diagnosis and pre-modeling of the prosthesis, in order to avoid patient radiation exposure. To accomplish this, ultrasound images are acquired along an axial plane, followed by a rigid registration method to obtain the spatial transformation
between subsequent images. These images are overlapped to reconstruct an axial plane equivalent to a CT-slice. A
phantom was used to conduct preliminary experiments and the achieved results were compared with the corresponding
CT-data, showing that the proposed methodology can be capable to create a valid approximation of the anterior thoracic
wall, which can be used to model/bend the prosthesis.Fundação para a Ciencia e Tecnologia (FCT
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