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首页> 外文期刊>The international journal of medical robotics + computer assisted surgery: MRCAS >Intensity-based 2D-3D registration for an ACL reconstruction navigation system
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Intensity-based 2D-3D registration for an ACL reconstruction navigation system

机译：基于强度的ACL重建导航系统的2D-3D注册

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摘要

To improve the positioning accuracy of tunnels for anterior cruciate ligament (ACL) reconstruction, we proposed an intensity-based 2D-3D registration method for an ACL reconstruction navigation system. Methods for digitally reconstructed radiograph (DRR) generation, similarity measurement, and optimization are crucial to 2D-3D registration. We evaluated the accuracy, success rate, and processing time of different methods: (a) ray-casting and splating were compared for DRR generation; (b) normalized mutual information (NMI), Mattes mutual information (MMI), and Spearman's rank correlation coefficient (SRC) were assessed for similarity between registrations; and (c) gradient descent (GD) and downhill simplex (DS) were compared for optimization. The combination of splating, SRC, and GD provided the best composite performance and was applied in an augmented reality (AR) ACL reconstruction navigation system. The accuracy of the navigation system could fulfill the clinical needs of ACL reconstruction, with an end pose error of 2.50 mm and an angle error of 2.74 degrees.
机译：为了提高前十字架韧带（ACL）重建的隧道定位精度，我们提出了一种用于ACL重建导航系统的强度的2D-3D配准方法。用于数字重建X线（DRR）生成的方法，相似度测量和优化对2D-3D注册至关重要。我们评估了不同方法的准确性，成功率和处理时间：（a）比较DRR生成的射线铸造和分离; （b）标准化互信息（NMI），掩抗互信息（MMI）和Spearman的等级相关系数（SRC）在注册之间的相似性评估了相似性; （c）比较梯度下降（GD）和下坡单纯x（DS）以优化。分离，SRC和GD的组合提供了最佳的复合性能，并应用于增强现实（AR）ACL重建导航系统。导航系统的准确性可以满足ACL重建的临床需求，结束姿势误差为2.50毫米，角度误差为2.74度。

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