2024-03-29T05:03:10Zhttps://repositori.uji.es/oai/requestoai:repositori.uji.es:10234/229712021-06-10T12:47:36Zcom_10234_7037com_10234_9col_10234_8635
Repositori UJI
author
Gual-Arnau, Ximo
author
Masó, Rubén
author
Lliso, Françoise
author
López Tarjuelo, Juan
2011-06-03T07:31:04Z
2011-06-03T07:31:04Z
2009
GUAL ARNAU, Ximo, et al. Quantifying Uncertainties for Prostate Image-Guided Radiotherapy: A 3D Organ Reconstruction and Registration Method. Open Medical Imaging Journal, 2009, v. 3, p. 1-5
1874-3471
http://hdl.handle.net/10234/22971
The purpose of this paper is to present a method for volumetric reconstruction, registration and margin assignation
applicable to both conventional CT scans and on board CT imaging. This method does not depend on the shape of the
organs, the bony anatomy or the use of markers, and we apply it to prostate and bladder. 3D reconstructions are performed
by means of spline surfaces and the 3D reconstructed surfaces are registered to a planning surface, using a multidimensional
alignment from the Euclidean distance transform and the Levenberg-Marquardt optimization algorithm. Once the
reconstructed surfaces are registered, we define a mean surface and obtain the corresponding variances from this mean
surface. The method works properly and demonstrates that once translations are insulated by registration, residual uncertainties
can be handled with the margin assigned for delineation variation and organ deformation
eng
© Bentham Science Publishers
Geometrical uncertainties
Image-guided radiotherapy
Interobserver variability
Organ motion
Registration
Shape
Quantifying Uncertainties for Prostate Image-Guided Radiotherapy: A 3D Organ Reconstruction and Registration Method
info:eu-repo/semantics/article
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