Three-Dimensional Registration of Freehand-Tracked Ultrasound to CT Images of the Talocrural Joint.

ABSTRACT: A rigid surface⁻volume registration scheme is presented in this study to register computed tomography (CT) and free-hand tracked ultrasound (US) images of the talocrural joint. Prior to registration, bone surfaces expected to be visible in US are extracted from the CT volume and bone contours in 2D US data are enhanced based on monogenic signal representation of 2D US images. A 3D monogenic signal data is reconstructed from the 2D data using the position of the US probe recorded with an optical tracking system. When registering the surface extracted from the CT scan to the monogenic signal feature volume, six transformation parameters are estimated so as to optimize the sum of monogenic signal features over the transformed surface. The robustness of the registration algorithm was tested on

SUBMITTER: Tumer N 

PROVIDER: S-EPMC6068753 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature