Mutual information based CT registration of the lung at exhale and inhale breathing states using thin-plate splines
نویسندگان
چکیده
منابع مشابه
Mutual information based CT registration of the lung at exhale and inhale breathing states using thin-plate splines.
The advent of dynamic radiotherapy modeling and treatment techniques requires an infrastructure to weigh the merits of various interventions (breath holding, gating, tracking). The creation of treatment planning models that account for motion and deformation can allow the relative worth of such techniques to be evaluated. In order to develop a treatment planning model of a moving and deforming ...
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PURPOSE To evaluate use of breath-hold CTs and implanted fiducials for definition of the internal target volume (ITV) margin for upper abdominal stereotactic body radiation therapy (SBRT). To study the statistics of inter- and intra-fractional motion information. METHODS AND MATERIALS 11 patients treated with SBRT for locally advanced pancreatic cancer (LAPC) or liver cancer were included in ...
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Deformable (elastic/non-rigid) image frames from sequences of the human thorax acquired for a subject during the process of breathing from three APs (Anatomical Positions) is registered. The images up for registration are modeled after tangible physically deformable objects. All the image elements are selected as Maxwell’s ‘demons’. The periphery of these images is considered to be deforming as...
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Accurate registration of cortical structures plays a fundamental role in statistical analysis of brain images across population. This paper presents a novel framework for the non-rigid intersubject brain surface registration, using conformal structure and spherical thin-plate splines. By resorting to the conformal structure, complete characteristics regarding the intrinsic cortical geometry can...
متن کاملSimulation of four-dimensional CT images from deformable registration between inhale and exhale breath-hold CT scans.
PURPOSE We propose to simulate an artificial four-dimensional (4-D) CT image of the thorax during breathing. It is performed by deformable registration of two CT scans acquired at inhale and exhale breath-hold. MATERIALS AND METHODS Breath-hold images were acquired with the ABC (Active Breathing Coordinator) system. Dense deformable registrations were performed. The method was a minimization ...
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ژورنال
عنوان ژورنال: Medical Physics
سال: 2004
ISSN: 0094-2405
DOI: 10.1118/1.1803671