Chen Thomas Kuiran, Abolmaesumi Purang, Thurston Adrian D, Ellis Randy E
School of Computing, Queen's University, Kingston, ON, Canada.
Med Image Comput Comput Assist Interv. 2006;9(Pt 1):899-906. doi: 10.1007/11866565_110.
3D ultrasound (US) is an emerging new imaging technology that appeals to more and more applications in intraoperative guidance of computer-assisted surgery. In a freehand US imaging system, US probe calibration is typically required to construct a 3D image of the patient's anatomy from a set of 2D US images. Most of the current calibration techniques concern primarily with the precision and accuracy. However, for computer-assisted surgeries that may require a calibration task inside the operating room (OR), many other important aspects have to be considered besides accuracy. In this paper, we propose a novel system for automated calibration that is optimized for the OR usage with real-time feedback and control of the calibration accuracy. We have also designed a novel N-wire phantom, with greatly reduced complexity to facilitate mass production without compromising the accuracy and robustness.
三维超声（US）是一种新兴的成像技术，在计算机辅助手术的术中引导方面有越来越多的应用。在徒手超声成像系统中，通常需要进行超声探头校准，以便从一组二维超声图像构建患者解剖结构的三维图像。当前大多数校准技术主要关注精度和准确性。然而，对于可能需要在手术室（OR）内进行校准任务的计算机辅助手术，除了准确性之外，还必须考虑许多其他重要方面。在本文中，我们提出了一种新颖的自动校准系统，该系统针对手术室使用进行了优化，具有校准精度的实时反馈和控制。我们还设计了一种新颖的N线体模，其复杂性大大降低，便于大规模生产，同时不影响准确性和鲁棒性。
