Multi-Modal 3D Image Registration using the Kullback-Leibler Distance

G. Stippel (South Africa)


multi-modal registration, image guided surgery, ul trasound, Kullback-Leibler distance, SPSA algo rithm,computed tomography


In this paper we address the problem of multi-modal co registration of medical 3D images. Several techniques for the rigid registration of multi-modal images have been de veloped; in one of those the Kullback-Leibler distance is used to align 2D-3D angiographic images [1]. In this paper we refine this technique and investigate its performance on the registration of pairs of 3D CT/US images. We test the method with regard to accuracy of registration, robustness with regard to the starting point, and speed of convergence, and obtain promising results.

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