We present a new technique for registering ultrasound and magnetic resonance (MR) images in the context of neurosurgery. It involves generating a pseudo-ultrasound (pseudo-US) from a segmented MR image and uses cross-correlation as the cost function to register with ultrasound. The algorithm's performance is compared to a state-of-the-art technique that uses a median filtered MR images to register with a Gaussian-blurred ultrasound using normalized mutual information (NMI). The two methods are tested on nine tumor cases, including both high- and low-grade gliomas. The pseudo-US method yielded significantly better alignment average than that obtained by NMI (p = 0.0009). If one case where NMI failed is excluded, the mean distance obtained by the pseudo-US approach (2.6 mm) is slightly lower than the one obtained by NMI (2.8mm), but not significantly so (p = 0.16). We conclude that the pseudo-US method is more robust for these cases. © 2010 Springer-Verlag Berlin Heidelberg.
CITATION STYLE
Mercier, L., Fonov, V., Del Maestro, R. F., Petrecca, K., Østergaard, L. R., & Collins, D. L. (2010). Rigid registration of 3D ultrasound and MRI: Comparing two approaches on nine tumor cases. In Advances in Intelligent and Soft Computing (Vol. 83, pp. 33–43). https://doi.org/10.1007/978-3-642-16259-6_3
Mendeley helps you to discover research relevant for your work.