Feature based modelling of lumbar and thoracic vertebrae for 3-D reconstruction of spine

Vinyas, . and Sampath, K and Bhat, Chandrashekhar and Nayak, Prabhakar K and Hareesha , K S (2014) Feature based modelling of lumbar and thoracic vertebrae for 3-D reconstruction of spine. In: Proceedings of International conference on Computational Methods in Engineering and Health Sciences, December 17-19 2014, Manipal.

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Abstract

Diagnosis of spinal deformities like scoliosis remains a challenging task till date. The method of bi-planar radiography is mostly recommended for diagnosis of this pathology. Since it is a three dimensional deformity 2-D evaluations are inaccurate. Lot of research works have been done in this area leading to the development of different 3-D evaluation methodologies. Still there is a requirement for methods to obtain quick results at low cost and which are easy to operate. In this work, anthropometric data pertaining to Asian specimen from a known database is used for modelling. It is ensured that a good visual match with the features of actual vertebrae is maintained. Vertebrae are assembled to complement the semi-automation process. Angles of vertebrae orientation are extracted automatically from bi-planar x-rays and are fed into the interface which controls the orientation of the 3-D spine model. The model obtained is checked for any unnecessary overlapping and necessary changes in distance are done manually. A semi-automatic process is developed to reorient the developed feature based 3-D model of thoracic and lumbar region of the spine at a short span of time. The 3-D model thus obtained is a close approximation to the actual spine of a scoliotic patient in standing position. In present work only vertebral orientation features are used to deform the model to get 3-D spine. This personalized 3-D model of the spine serves as an effective tool for physicians to extract vital information of spinal curvature and the Cobb angle. This in turn helps them to diagnose and take quick decisions for the treatment. Thus, the developed 3-D spine model and the semi-automatic process to obtain personalized 3-D model. It has the potential to provide fast, easy and effective diagnosis at low cost when compared to the methods currently in practice.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: 3D spine modelling, Biplanar radiography, Scoliosis
Subjects: Engineering > MIT Manipal > Electronics and Communication
Engineering > MIT Manipal > MCA
Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 19 Jan 2015 09:55
Last Modified: 19 Jan 2015 09:58
URI: http://eprints.manipal.edu/id/eprint/141648

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