Coupé Pierrick, Hellier Pierre, Morandi Xavier, Barillot Christian
University of Rennes I, CNRS, IRISA, UMR 6074, Campus de Beaulieu, F-35042, Rennes, France.
Med Image Anal. 2007 Dec;11(6):604-15. doi: 10.1016/j.media.2007.05.002. Epub 2007 Jun 2.
Three-dimensional (3D) freehand ultrasound uses the acquisition of non-parallel B-scans localized in 3D by a tracking system (optic, mechanical or magnetic). Using the positions of the irregularly spaced B-scans, a regular 3D lattice volume can be reconstructed, to which conventional 3D computer vision algorithms (registration and segmentation) can be applied. This paper presents a new 3D reconstruction method which explicitly accounts for the probe trajectory. Experiments were conducted on phantom and intra-operative datasets using various probe motion types and varied slice-to-slice B-scan distances. Results suggest that this technique improves on classical methods at the expense of computational time.
三维（3D）徒手超声通过跟踪系统（光学、机械或磁性）采集在三维空间中定位的非平行B超扫描图像。利用不规则间隔的B超扫描图像的位置，可以重建规则的三维晶格体积，传统的三维计算机视觉算法（配准和分割）可应用于此。本文提出了一种明确考虑探头轨迹的新三维重建方法。使用各种探头运动类型和不同的层间B超扫描距离，在体模和术中数据集上进行了实验。结果表明，该技术以计算时间为代价，在经典方法的基础上有所改进。
