Print Email Facebook Twitter Three-dimensional registration of freehand-tracked ultrasound to CT Images of the Talocrural Joint Title Three-dimensional registration of freehand-tracked ultrasound to CT Images of the Talocrural Joint Author Tümer, N. (TU Delft Biomaterials & Tissue Biomechanics) Kok, A.C. (Amsterdam UMC) Vos, F.M. (TU Delft ImPhys/Quantitative Imaging; Amsterdam UMC) Streekstra, Geert J. (Amsterdam UMC) Askeland, Christian (SINTEF) Tuijthof, G.J.M. (Amsterdam UMC; Zuyd University of Applied Sciences) Zadpoor, A.A. (TU Delft Biomaterials & Tissue Biomechanics) Date 2018 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 a dataset collected from 12 cadaveric ankles. The proposed method was used in a clinical case study to investigate the potential of US imaging for pre-operative planning of arthroscopic access to talar (osteo)chondral defects (OCDs). The results suggest that registrations with a registration error of 2 mm and less is achievable, and US has the potential to be used in assessment of an OCD’ arthroscopic accessibility, given the fact that 51% of the talar surface could be visualized Subject talocrural jointfreehand ultrasoundregistrationosteochondral defectOA-Fund TU Delft To reference this document use: http://resolver.tudelft.nl/uuid:d58b1cf5-e09d-4a63-b509-fa1e0c7cec9c DOI https://doi.org/10.3390/s18072375 ISSN 1424-8220 Source Sensors, 18 (7) Part of collection Institutional Repository Document type journal article Rights © 2018 N. Tümer, A.C. Kok, F.M. Vos, Geert J. Streekstra, Christian Askeland, G.J.M. Tuijthof, A.A. Zadpoor Files PDF sensors_18_02375.pdf 1.56 MB Close viewer /islandora/object/uuid:d58b1cf5-e09d-4a63-b509-fa1e0c7cec9c/datastream/OBJ/view