Active contour models applied to obtain the shape of tibiae and fibulae from Computed Tomography (CT) scans
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Date
2008-07
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G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
The present study was undertaken to apply “active contour models to obtain the shape of tibiae and fibulae from their computed tomography (CT) scans” data. Computed Tomography (CT) is a non-invasive technique to provide images of any part of human body without superimposition of adjacent structures. Studies using computed tomography combined with image active contour have revealed the accuracy of the shapes obtained in CT. Various boundary detection algorithms for CT images have been developed in the last few decades but very few of them are completely automatic. Features such as digitization of initial boundary, closed contours, automatic continuous mode are included in this work. This approach also contains options such as expansion and shifting of initial boundary in order to obtain the final shape. Validation of the algorithm is provided by including artificially created bone slices in standard shapes. The obtained digitized data can further be used for prosthetic applications. The digitized data points of bone and soft tissue used for making 3D model surface. This surface model can be further used to create 3D Finite Element Model which can be used in stress analysis towards design of prosthesis in medical field.
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