• Tipo:
  • Journal Article
Improved Surface-Based Registration of CT and Intraoperative 3D Ultrasound of Bones

The intraoperative registration of preoperative CT volumes is a key process of most computer-assisted orthopedic surgery (CAOS) systems. In this work, is reported a new method for automatic registration of long bones, based on the segmentation of the bone cortical in intraoperative 3D ultrasound images. A bone classifier was developed based on features, obtained from the principal component analysis of the Hessian matrix, of every voxel in an intraoperative ultrasound volume. 3D freehand ultrasound was used for the acquisition of the intraoperative ultrasound volumes. Corresponding bone surface segmentations in ultrasound and preoperative CT imaging were used for the intraoperative registration.

Zian Fanti, Fabian Torres, Eric Hazan-Lasri, Alfonso Gastelum-Strozzi, Leopoldo Ruiz-Huerta, Alberto Caballero-Ruiz, F. Arámbula Cosío, "Improved Surface-Based Registration of CT and Intraoperative 3D Ultrasound of Bones", Journal of Healthcare Engineering, vol. 2018, Article ID 2365178, 11 pages, 2018.