Intraoperative 3-D image acquisition and augmented reality for laparoscopic/thoracoscopic surgical navigation system

腹腔镜手术导航系统的术中3-D图像采集和增强现实1.使用磁光混合跟踪器进行腹腔镜手术中基于3-D超声的导航的术中跟踪器校准（2004）磁跟踪器的准确性受到磁场失真的影响，磁场失真是由金属物体和电子设备的紧密接近引起的，这在手术室中是不可避免的。2.体内实验（2004）通过动物实验评价腹腔镜三维超声重建的准确性。使用猪，校准数据和三维超声体积下获得腹腔镜控制。将连接到保持器远端的楔形标志放置在猪肝背侧，并通过内窥镜保持器固定标志保持器。减小了磁畸变引起的位置误差， ...更多信息 ced至2.9 mm。3.计算机辅助胸腔镜手术中肺变形的估计（2005年至2007年）在胸腔镜手术中，由于肺萎陷导致肺的显著大变形，因此基于术中胸腔镜图像和术前CT图像预测癌症位置常常成为困难的任务。我们提出了一种基于CT的胸腔镜手术导航系统，涉及术中矫正大的大变形。通过动物实验和临床实验，评价前哨淋巴结定位系统对肿瘤位置预测的准确性（2005年至2007年）胃粘膜下注射造影剂后（超顺磁性氧化铁：SPIO）用于磁共振成像（MRI），探讨胃癌前哨淋巴结导航系统的最佳条件。5.直肠乙状结肠切除术中输尿管导航系统（2006年至2007年）为了避免术中损伤输尿管，我们开发了输尿管导航系统，并在术中将其叠加到实时内窥镜图像上。少

Intraoperative 3-D image acquisition and augmented reality for laparoscopic surgical navigation system1.Intraoperative tracker calibration using a magneto-optic hybrid tracker for 3-D ultrasound-based navigation in laparoscopic surgery (2004)The accuracy of magnetic trackers is affected by magnetic field distortion that results from the close proximity of metal objects and electronic equipment, which is unavoidable in the operating room. We developed a calibration method for intraoperative magnetic distortion that can be applied to laparoscopic 3-D US data acquisition.2.In vivo experiment (2004)We evaluated the accuracy of laparoscopic 3-D US reconstruction by animal experiments. Using a pig, calibration data and 3-D US volumes were acquired under laparoscopic control. A wedge-shaped landmark attached to the distal end of the holder was placed dorsal to the pig liver, and the landmark holder was fixed by the endoscopic holder. The positional error caused by magnetic distortion was redu … More ced to 2.9 mm.3.Estimation of intraoperative lung deformation for computer assisted thoracoscopic surgery (2005〜2007)In the thoracoscopic surgery, predicting the cancer position based on intraoperative thoracoscopic images and preoperative CT images often becomes a difficult task because the lung collapse causes significantly large deformation of the lung. We propose a CT-based thoracoscopic surgical navigation system, involving the intraoperative correction of large large deformation. Animal and clinical experiments were performed to evaluate the prediction accuracy of the cancer position.4.Sentinel node navigation system (2005〜2007)After the gastric submucosal injection of contrast enhance agent (Super-Paramagnetic Iron Oxide: SPIO) for magnetic resonance imaging (MRI), optimal conditions were investigated for sentinel node navigation system for gastric cancer.5.Navigation system for ureter in rectosigmoid resection (2006〜2007)To avoid the intraoperative injury of ureters, we have developed the navigation system for ureters which were superimposed onto live endoscopic images intraoperatively. Less