Multimodality image integration for stereotactic surgical planning.
Multimodality image integration for stereotactic surgical planning.
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用于立体定向手术规划的多模态图像集成。
DOI：
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发表时间：
1991
期刊：
影响因子：
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通讯作者：
T. Peters
中科院分区：
文献类型：
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作者：
C. Henri;D. Collins;T. Peters
提出了一种将立体定向投影和断层图像数据相结合的方法，以获得大脑解剖和血管系统的复合三维图像(立体对)。该技术用于组合来自每种模式的互补信息，并允许直接查看成像体积。手术在很大程度上是自动化的，除了在立体定向手术计划中通常使用的设备或信息外，不需要额外的设备或信息。这两种类型的数据是通过将投影血管造影(DSA)叠加到半透明体积渲染的CT或MR图像上来组合的。由于渲染算法采用了正交投影技术，因此必须首先对层析体积进行整形和定向，以产生与DSA投影匹配的透视图。在这个过程中，数据经历了各种内插，从而影响了基于结果图像的目标识别的准确性。使用模拟数据集评估匹配过程的完整性。此外，还进行了计算，以估计从数字化立体图像进行的测量的分辨率。得到的匹配图像的亚像素精度表明该技术具有立体定向应用的潜力。给出了CT-DSA和MR-DSA组合数据集的初步结果。
A method is presented for integrating stereotactic projection and tomographic image data to give composite 3-D images (stereo pairs) of cerebral anatomy and vasculature. The technique serves to combine complementary information from each modality and allows the imaged volume to be viewed directly. The procedure is largely automated and requires no additional apparatus or information beyond that which is ordinarily employed during stereotactic surgical planning. The two types of data are combined by superimposing the projection angiogram (DSA) onto a translucent volume rendered CT or MR image. Since the rendering algorithm employs an orthographic projection technique, the tomographic volume must first be reshaped and oriented to yield a perspective view that matches the DSA projection. During this process, the data undergo various interpolations which consequently affect the accuracy of target identification based on the resulting images. The integrity of the matching procedure was assessed using simulated data sets. Also, calculations were performed to estimate the resolution of measurements made from digitized stereoscopic images. The resulting sub-pixel accuracy of the matched images suggests that the technique has potential for stereotactic applications. Preliminary results are presented illustrating combined CT-DSA and MR-DSA data sets.