The accuracy of the reproduction of the lumbar spine elements following CT and MRI projections
Journal Title: Archive of Mechanical Engineering - Year 2014, Vol 0, Issue 4
Abstract
The paper presents an analysis of factors influencing the accuracy of reproduction of geometry of the vertebrae and the intervertebral disc of the lumbar motion segment for the purpose of designing of an intervertebral disc endoprosthesis. In order to increase the functionality of the new type of endoprostheses by a better adjustment of their structure to the patient’s anatomical features, specialist software was used allowing the processing of the projections of the diagnosed structures. Recommended minimum values of projection features were determined in order to ensure an effective processing of the scanned structures as well as other factors affecting the quality of the reproduction of 3D model geometries. Also, there were generated 3D models of the L4-L5 section. For the final development of geometric models for disc and vertebrae L4 and L5 there has been used smoothing procedure by cubic free curves with the NURBS technique. This allows accurate reproduction of the geometry for the purposes of identification of a spatial shape of the surface of the vertebrae and the vertebral disc and use of the model for designing of a new endoprosthesis, as well as conducting strength tests with the use of finite elements method.
Authors and Affiliations
Adrian Mróz, Konstanty Skalski, Paweł Kroczak, Andrzej Nowakowski
Keywords
Related Articles
- EP ID EP167508
- DOI 10.2478/meceng-2014-0030
- Views 68
- Downloads 0
The accuracy of the reproduction of the lumbar spine elements following CT and MRI projections
The paper presents an analysis of factors influencing the accuracy of reproduction of geometry of the vertebrae and the intervertebral disc of the lumbar motion segment for the purpose of designing of an intervertebral d...
Simulation of moving loads in elastic multibody systems with parametric model reduction techniques
In elastic multibody systems, one considers large nonlinear rigid body motion and small elastic deformations. In a rising number of applications, e.g. automotive engineering, turning and milling processes, the position o...
An experimental-numerical analysis of plastic zones initiation around holes in shields made of steel C45 under tension
The paper presents the results of research on the plastic zones formation in thin (3.51 [mm]) shields made of steel C45 with holes of 4, 10 and 20 diameters. The authorship method of identifying plastic macro-strains uti...
Experimental study of the temperature distribution and microstructure of plunge stage in friction stir welding process by the tool with triangle pin
Considering the developing role of the friction stir welding in manufacturing industry, a complete study on the process is necessary. Studies on each stage of the process in particular, provide a better understanding of...
Effect of tool geometry and welding speed on mechanical properties and microstructure of friction stir welded joints of aluminium alloys AA6082-T6
Friction stir welding is a solid state innovative joining technique, widely being used for joining aluminium alloys in aerospace, marine automotive and many other applications of commercial importance. The welding parame...