X線単面投影像による人工膝関節の動態推定 : 推定ミス対策,画質と推定精度の関連について(機械力学,計測,自動制御)

概要

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We have developed a technique for estimating 3D motion of knee prosthesis from its 2D perspective projections. Our primary studies of computer model simulation and experiments on the CCD images of prosthesis demonstrated sufficient accuracies of position/orientation estimation for knee prosthesis. Then we changed over our project from the basic analyses and experiments to the countermeasurements against various problems which could possibly happen at clinical application. Among them, the following problems and their solutions are stated in this paper : Miss-estimation for an orientations of a tibial compartment due to its symmetry-like shape, effects of image quality on the estimation accuracies. It is also ahown an idea how to improve the estimation accuracy of translation along the direction perpendicular to the image plane.
社団法人日本機械学会の論文
2004-12-25