A Diffeomorphic Demons based Deformable Thoracic CT Image Registration between Full Inhale and Full Exhale Frames
نویسندگان
چکیده
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 an effect of the resultant forces of the demon elements. The paper presents an iterative non-parametric diffeomorphic demon registration process for thoracic CT (Computed Tomography) images. An alternate optimization approach concerning Thirion’s demons algorithm to provide a fast non-linear registration algorithm has been proposed. The credibility and performance of the above proposed method is demonstrated by its exemplary experimental results.
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