Key Techniques of Computer-aided Pedicle Screw Implantation System based on Visual Interaction
LI Liling
LI Bin
DING Huanwen
TIAN Lianfang
Abstract：To achieve the goal of safety and personalization for surgery planning,a computer system aiding pedicle screw implanta-tion was established in this paper,as the present spine surgery planning method does not meet the needs of complex clinical environ-ment adaptability and high risk controllability.Firstly,the spine model was reconstructed based on its pre-processed images by sur-face rendering technology.Secondly,combined with the technology of 2D pixel erasing and 3D multiple surface cutting,a new vertebra dividing algorithm was offered and the deviation caused by redundancy between bone connections was removed.Finally,the contour line of where the selected reference surface was abstracted and the bone cros was separated and the process of pedicle screw implanta-tion surgery was directly simulated.The results demonstrate that the system can precisely achieve spine bone model segmentation and virtualize pedicle screw implantation effectively,where it provides scientific basis for surgical planning.
Keywords：Visual interaction3D reconstructionComputer-aidedVertebral separationPedicle screw
Publication Date：2016-01-01
Online Publishing Date：2026-09-11(First online date of this platform, not the publication date of the document)
Pages：7( 234-240 )