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Graphics hardware acceleration for spline-based multi-resolution 2D-3D registration

机译：基于样条的多分辨率2D-3D注册的图形硬件加速度

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Introduction: 2D-3D registration of a set of two-dimensional (2D) X-ray images with a three-dimensional (3D) volume data has shown great potential in computer-assisted radiosurgery and orthopaedic surgery. The reported techniques to achieve this registration can be split into two main categories: feature-based methods and intensity-based methods. Feature-based methods require a prerequisite segmentation stage which is error-prone and hard to achieve automatically. The errors in segmentation can lead to errors in the final registration. In contrast, intensity-based methods directly compare the fluoroscopy images with digitally reconstructed radiographs (DRRs), which are obtained by simulating X-ray projection of a CT volume. No segmentation is required. However, intensity-based methods are also computationally expensive. To address this problem, various techniques such as multi-resolution strategy [1] and attenuation fields [2] are proposed. However, they are all implemented using software with sacrifice of registration accuracy and precision.
机译：简介：具有三维（3D）卷数据的一组二维（2D）X射线图像的2D-3D注册在计算机辅助放射外科和矫形外科的潜力中显示出很大的潜力。据报道的实现此注册的技术可以分为两个主要类别：基于功能的方法和基于强度的方法。基于功能的方法需要一个先决条件的分段阶段，这是易于出错的，并且难以自动实现。分段错误可能导致最终注册中的错误。相反，基于强度的方法直接将具有数字重建的X线片（DRR）的荧光学图像进行比较，这是通过模拟CT体积的X射线投影来获得的。不需要分割。然而，基于强度的方法也是计算昂贵的。为了解决这个问题，提出了各种技术，例如多分辨率策略[1]和衰减字段[2]。但是，它们都使用具有登记精度和精度的牺牲的软件来实现。

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