Publication

Robust Semi-Automatic Extraction of Fractured Hip Bones

Conference Paper/Poster - Aug 28, 2012

Units
Contact

Citation
Fornaro J, Székely G, Harders M (2012). Robust Semi-Automatic Extraction of Fractured Hip Bones.
Type
Conference Paper/Poster (English)
Conference Name
International Symposium on Biomedical Simulation (Phoenix)
Publication Date
Aug 28, 2012
Pages
5
Publisher
ISBMS
Brief description/objective

The segmentation of bones and bone fragments in clinical computed tomography datasets is an important first step in order to carry out computer-based surgical planning using patient-specific anatomical models. While semi-automatic and automatic methods have been proposed for the intact pelvic bone, the segmentation of bone fragments in the fractured pelvic bone still is a challenge due to weak boundaries and the diversity of injury patterns. We propose a semi-automatic multi-step segmentation method using bone and fracture gap enhancement filtering and a graph cut based bone fragment separation approach. The key contribution is a technique for automated detection of incorrect bone fragment separation in the case of incomplete pelvic fractures based on fracture gap planes detected in Hessian filtered images. Moreover, we propose a new sheetness measure based on a modified Hessian matrix. Our system is capable of segmenting fragments of complex hip fractures with only minimal user interaction.