Peters T M, Henri C, Collins L, Pike B, Olivier A
McConnell Brain Imaging Centre, McGill University, Montréal, Québec, Canada.
Australas Phys Eng Sci Med. 1990 Dec;13(4):166-76.
Stereotactic neurosurgery planning, an intrinsically three-dimensional procedure, is generally performed on the basis of two-dimensional tomographic or projection images. We present extensions to these conventional approaches that use stereoscopic digital subtraction angiography, three-dimensional volume rendered computed tomography or magnetic resonance images, or a combination of these modalities. The stereoscopic DSA images are analysed interactively on a 3-D workstation. This system employs a liquid-crystal polarizing shutter to display alternate left- and right-eye views to a user wearing polarized glasses. Quantitative planning operations may be performed on the basis of the angiograms alone, or in conjunction with tomographic images of the anatomy. We also describe the procedures used to produce volume-rendered three-dimensional images from MR and CT data-sets, as well as the methodology for combining the stereoscopic angiograms with the volumetric anatomical images.
立体定向神经外科手术规划本质上是一个三维过程，通常基于二维断层扫描或投影图像进行。我们提出了对这些传统方法的扩展，这些扩展使用立体数字减影血管造影、三维容积再现计算机断层扫描或磁共振图像，或这些模态的组合。立体数字减影血管造影图像在三维工作站上进行交互式分析。该系统采用液晶偏振快门向佩戴偏振眼镜的用户显示交替的左眼和右眼视图。定量规划操作可以仅基于血管造影进行，也可以与解剖结构的断层图像结合进行。我们还描述了从磁共振成像和计算机断层扫描数据集中生成容积再现三维图像的过程，以及将立体血管造影与容积解剖图像相结合的方法。
