Abstract
An accurate image registration of MRI to CT data is of great benefit for prostate treatment planning in image-guided radiotherapy. However, prostate motion with respect to surrounding structures and absence of clear structures in and of the prostate in the CT image, complicate this registration. Therefore, we developed a semi-automatic method for a robust, accurate and time efficient image registration of MRI to CT data of the prostate, making use of gold markers, that are inserted in the prostate, as fiducials. The gold markers, as they appear on both images, are segmented using a thresholding technique. The registration deals with a rigid transformation and is based on the iterative closest point algorithm that acts onto the surfaces of the segmented gold markers. The method is clinically tested and uncertainties of 0.4-0.5 mm and 0.7-1.4 mm are obtained at the centre and at the rim of the prostate, respectively.
Keywords
- Compute Tomography Image
- Image Registration
- Intensity Modulate Radiation Therapy
- Magnetic Resonance Imaging Image
- Compute Tomography Data
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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van Dalen, J.A., Huisman, H.J., Welmers, A., Barentsz, J.O. (2003). Semi-automatic Image Registration of MRI to CT Data of the Prostate Using Gold Markers as Fiducials. In: Gee, J.C., Maintz, J.B.A., Vannier, M.W. (eds) Biomedical Image Registration. WBIR 2003. Lecture Notes in Computer Science, vol 2717. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-39701-4_33
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DOI: https://doi.org/10.1007/978-3-540-39701-4_33
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