CT to cone-beam CT deformable registration with simultaneous intensity correction
نویسندگان
چکیده
منابع مشابه
WE-E-213CD-04: CT to Cone-Beam CT Deformable Registration With Simultaneous Intensity Correction.
PURPOSE To develop and validate a robust CT to cone-beam (CBCT) deformable image registration algorithm that can handle CBCT artifacts and intensity inconsistency, and thus can yield accurate registration results. METHODS We propose a new algorithm called Deformation with Intensity Simultaneously Corrected (DISC). DISC distinguishes itself from the original demons by performing an intensity c...
متن کاملDemons deformable registration of CT and cone-beam CT using an iterative intensity matching approach.
PURPOSE A method of intensity-based deformable registration of CT and cone-beam CT (CBCT) images is described, in which intensity correction occurs simultaneously within the iterative registration process. The method preserves the speed and simplicity of the popular Demons algorithm while providing robustness and accuracy in the presence of large mismatch between CT and CBCT voxel values ("inte...
متن کاملEvaluation of a Ct to Cone-beam Ct Deformable Registration Algorithm
Purpose and Objectives The advent of on-board cone-beam CT (CBCT) imagers for radiation therapy delivery devices offers the potential for daily dosimetry and adaptive therapy. Heretofore this potential has been limited by several artifacts in the CBCT volumes which may require surrogates with reliable density values to be used for recalculation of dosimetry, such as a CT volume deformed to the ...
متن کاملEvaluation of Deformable Image Registration-Based Contour Propagation From Planning CT to Cone-Beam CT
PURPOSE We evaluated the performance of organ contour propagation from a planning computed tomography to cone-beam computed tomography with deformable image registration by comparing contours to manual contouring. MATERIALS AND METHODS Sixteen patients were retrospectively identified based on showing considerable physical change throughout the course of treatment. Multiple organs in the 3 reg...
متن کاملInter-fraction deformable registration of CT and Cone Beam CT images for adaptive radiotherapy
Recent advances in intensity modulated radiotherapy (IMRT) have allowed accurate and fast delivery of treatment dose in the patient. Daily changes in patient geometry need to be accounted for to take full advantage of the increased accuracy of the delivered dose. On-site imaging using cone beam CT and registration of the acquired image with the algorithm presented here provides tools for effici...
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ژورنال
عنوان ژورنال: Physics in Medicine and Biology
سال: 2012
ISSN: 0031-9155,1361-6560
DOI: 10.1088/0031-9155/57/21/6807