Method and a device for computer assisted surgery
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United States of America Patent
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Jun 27, 2017
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Dec 15, 2011
filing date -
Dec 15, 2011
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Abstract
A method for computer assisted determination of values of correction parameters for positioning a medical device relative to a target structure or to a reference base. The method includes a numerical procedure that includes the steps of:
- i) automatic detection of the projection of a cylindrical reference means in a medical image and determination of a minimum of four characteristic landmarks within the projection of the cylindrical reference means;ii) generating a virtual geometric representation of the cylindrical reference means;iii) determining the virtual projection points representing the characteristic landmarks using a virtual geometric representation of the cylindrical reference means; andiv) iterative determination of the position and orientation of the cylindrical reference means by matching the virtual projection points of the virtual geometric representation of the cylindrical reference means with the characteristic landmarks of the projection of the cylindrical reference means.
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