Abstract
In this paper, cost functions are tested for 2D registration of portal and reference images for treatment verification in radiotherapy. Tests were performed with and without pre-processing for 96 image pairs of various treatment sites. The best results were obtained when the images were preprocessed by unsharp masking and histogram equalization. This led to a success rate of about 88% and a difference with clinical registration of 1.2 mm SD and 1 degree SD for most of the tested cost functions. The number of local minima with mutual information is much larger than with the other tested cost functions.
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© 2001 Springer-Verlag Berlin Heidelberg
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Dekker, N., Ploeger, L.S., van Herk, M. (2001). Evaluation of Cost Functions for Gray Value Matching of 2D Images in Radiotherapy. In: Niessen, W.J., Viergever, M.A. (eds) Medical Image Computing and Computer-Assisted Intervention – MICCAI 2001. MICCAI 2001. Lecture Notes in Computer Science, vol 2208. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-45468-3_226
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DOI: https://doi.org/10.1007/3-540-45468-3_226
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