CT/US segmentation-less registration

CT is a frequently used imaging diagnostic modality; US enables real-time, non invasive, intra-operative visualization of mobile and deformable organs. We have developed a CT/US 3D/3D rigid voxel-based registration method avoiding segmentation of US images enabling intra-operative transfer of planning data and guidance. Image pre-processing is necessary to make the modalities as close as possible (filtering, interface enhancing in CT data, filtering, artefact and acoustic shadow removal in US data). Different similarity measures and optimization methods have been evaluated. This work has been applied to percutaneous kidney surgery.

Reference: Leroy A., Mozer P., Payan Y., Troccaz J. Rigid registration of freehand 3D ultrasound and CT-scan kidney images. In Proceedings of MICCAI’2004, C. Barillot, D.R. Haynor and P. Hellier (Eds), Springer Verlag, LNCS Series Vol3216, pp837-844 (PDF)

Leroy and Mozer PhD theses accessible in the TEL website – in french

Collaborations: La Pitié-Salpétrière Hospital, Paris (Dr Mozer, Pr Chartier-Kastler – urology dept) – PRAXIM-Medivision

Status: SLEEPING

Validated on data from a healthy volunteer and comparison to a surface registration algorithm; one thesis defended in 2004 (A. Leroy), another one on the clinical side (P. Mozer) in 2007.

Contact : jocelyne.troccaz@imag.fr or yohan.payan@imag.fr