Single Marker Localization for Automatic Patient Registration in Interventional Radiology
Michael Tschannen, Grzegorz Toporek, Daphné Wallach, Matthias Peterhans, Stefan Weber · BORIS (University Library Bern) · 2012
Accurate definition of single marker (SM) locations in computed tomography (CT) images is a part of the patient-toimage registration technique used in our navigation system for interventional radiology. The SMs are currently selected manually by the user. We herein present a two-step image processing algorithm first uses morphological operations on the binarized CT image for volume of interest (VOI) extraction and then applies a Hough transform (HT) to precisely localize SM centers in VOIs. This leads to fully automatic SM localization with precision that exceeds manual localization.