20 October 1997 Deformable anatomical templates for brachytherapy treatment planning in radiotherapy of cervical cancer
Author Affiliations +
Abstract
This paper describes a new method to register serial, volumetric x-ray computed tomography (CT) data sets for tracking soft-tissue deformation caused by insertion of intracavity brachytherapy applicators to treat cervical cancer. 3D CT scans collected from the same patient with and without a brachytherapy applicator are registered to aid in computation of the radiation dose to tumor and normal tissue. The 3D CT image volume of pelvic anatomy with the applicator. Initial registration is accomplished by rigid alignment of the pelvic bones and non-rigid alignment of gray scale CT data and hand segmentations of the vagina, cervix, bladder, and rectum. A viscous fluid transformation model is used for non-rigid registration to allow for local, non-linear registration of the vagina, cervix, bladder, and rectum without disturbing the rigid registration of the bony pelvis and adjacent structures. Results are presented in which two 3D CT data sets of the same patient - imaged with and without a brachytherapy applicator - are registered.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Gary E. Christensen, Gary E. Christensen, Jeffrey F. Williamson, Jeffrey F. Williamson, K. S. C. Chao, K. S. C. Chao, Michael I. Miller, Michael I. Miller, F. B. So, F. B. So, Michael W. Vannier, Michael W. Vannier, "Deformable anatomical templates for brachytherapy treatment planning in radiotherapy of cervical cancer", Proc. SPIE 3168, Vision Geometry VI, (20 October 1997); doi: 10.1117/12.292779; https://doi.org/10.1117/12.292779
PROCEEDINGS
8 PAGES


SHARE
Back to Top