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Hardware-Assisted 2D/3D Intensity-Based Registration for Assessing Patellar Tracking

机译:基于硬件的基于2D / 3D强度的配准评估Pat骨跟踪

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摘要

The problem in 2D/3D intensity-based registration of computed tomography (CT) images is to find a pose such that a digitally reconstructed radiograph (DRR) of the 3D image matches a given 2D image. Generating DRRs, a computationally intensive process, can be accelerated by precomputation, or by using custom hardware that accelerates volume rendering. Recent algorithmic advances for 3D texture mapping using off-the-shelf video cards have further improved volume rendering. We propose to generate DRRs generated in real time, without any precomputation, for 2D/3D registration. This work is a continuation of the point-based fluoroscopic technique for assessing patellar tracking, in which a cadaver patellofemoral joint was tracked by a single-plane fluoroscope using a point-based registration method with accuracy determined by comparison to Roentgen Stereophotogrammetric Analysis (RSA). We have developed a hardware-assisted intensity-based registration method and applied it to the same set of data.
机译:基于计算机断层扫描(CT)图像的基于2D / 3D强度的配准中的问题是要找到一个姿势,使3D图像的数字重建射线照片(DRR)与给定的2D图像匹配。可以通过预计算或使用可加速体绘制的自定义硬件来加速生成DRR(这是一个计算量很大的过程)。使用现有视频卡进行3D纹理映射的最新算法进步进一步改善了体积渲染。我们建议为2D / 3D注册生成无需任何预先计算即可实时生成的DRR。这项工作是基于点的荧光透视技术用于评估tell骨跟踪的延续,其中,通过单平面荧光镜使用基于点的配准方法对尸体pa股关节进行了跟踪,其准确性与伦琴立体摄影测量分析(RSA)比较而确定。我们已经开发了一种基于硬件的基于强度的配准方法,并将其应用于同一组数据。

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