This paper describes a method based on an energy minimizing deformable model applied to the 3D biomechanical modeling of a set of organs considered as regions of interest (ROI) for radiotherapy. The initial model consists of a quadratic surface that is deformed to the exact contour of the ROI by means of the physical properties of a mass-spring system. The exact contour of each ROI is first obtained using a geodesic active contour model. The ROI is then parameterized by the vibration modes resulting from the deformation process. Once each structure has been defined, the method provides a 3D global model including the whole set of ROIs. This model allows one to describe statistically the most significant variations among its structures. Statistical ROI variations among a set of patients or through time can be analyzed. Experimental results are presented using the pelvic zone to simulate anatomical variations among structures and its application in radiotherapy treatment planning. © 2010 Zhejiang University and Springer-Verlag Berlin Heidelberg.
CITATION STYLE
Bueno, G., Salido, J., Déniz, O., Carrascosa, C., & Delgado, J. M. (2010). Three-dimensional organ modeling based on eformable surfaces applied to radio-oncology. Journal of Zhejiang University: Science C, 11(6), 407–417. https://doi.org/10.1631/jzus.C0910402
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