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Generalized correlation ratio for rigid registration of 3D ultrasound with MR images

Roche, A; Pennec, X; Rudolph, M; Auer, DP; Malandain, G; Ourselin, S; ... Ayache, N; + view all (2000) Generalized correlation ratio for rigid registration of 3D ultrasound with MR images. SPRINGER-VERLAG BERLIN

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Abstract

Automatic processing of 3D ultrasound (US) is of great interest for the development of innovative and low-cost computer-assisted surgery tools. In this paper, we present a new image-based technique to rigidly register intra-operative 3D US with pre-operative Magnetic Resonance (MR) data. Automatic registration is achieved by maximization of a similarity measure that generalizes the correlation ratio (CR). This novel similarity measure has been designed to better take into account the nature of US images. A preliminary cross-validation study has been carried out using a number of phantom and clinical data. This indicates that the worst registration errors are of the order of the MR resolution.

Type:Report
Title:Generalized correlation ratio for rigid registration of 3D ultrasound with MR images
ISBN:3-540-41189-5
Keywords:MUTUAL INFORMATION, MEDICAL IMAGES, MAXIMIZATION
UCL classification:UCL > School of BEAMS > Faculty of Engineering Science > Medical Physics and Bioengineering

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