Patient Specific Bone Modeling for Minimum Invasive Spine Surgery

Abstract

This paper deals with patient specific bone modeling from non-invasive medical images viz. CT/MRI scans of scoliosis patients. The volumetric data i.e. voxel and triangular facet triangle based models are primarily used for bio-modeling and visualization, which requires huge memory space. On the other side, recent advances in CAD technology facilitate design, prototyping and manufacturing of any object having freeform surfaces. These CAD-based solid modeling is based on boundary representation (B-rep) techniques. Image Processing techniques are proposed to extract point cloud data from stalk of CT scan images. Estimated Point Cloud data is preprocessed and further used for water tight surface model. These patient specific bone models are more accurate, reliable and editable for implant design, trajectory path planning, etc. in robotic surgeries.