• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Visualization, Image-Guided Procedures pt.2; Progress in Biomedical Optics and Imaging; vol.8 no.28; Proceedings of SPIE-The International Society for Optical Engineering; vol.6509 pt.2 >Determination of drill paths for percutaneous cochlear access accounting for target positioning error
【24h】

Determination of drill paths for percutaneous cochlear access accounting for target positioning error

机译：确定目标定位误差的经皮人工耳蜗通路的钻孔路径

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In cochlear implant surgery an electrode array is permanently implanted to stimulate the auditory nerve and allow deaf people to hear. Current surgical techniques require wide excavation of the mastoid region of the temporal bone and one to three hours time to avoid damage to vital structures. Recently a far less invasive approach has been proposed—percutaneous cochlear access, in which a single hole is drilled from skull surface to the cochlea. The drill path is determined by attaching a fiducial system to the patient's skull and then choosing, on a pre-operative CT, an entry point and a target point. The drill is advanced to the target, the electrodes placed through the hole, and a stimulator implanted at the surface of the skull. The major challenge is the determination of a safe and effective drill path, which with high probability avoids specific vital structures—the facial nerve, the ossicles, and the external ear canal—and arrives at the basal turn of the cochlea. These four features lie within a few millimeters of each other, the drill is one millimeter in diameter, and errors in the determination of the target position are on the order of 0.5mm root-mean square. Thus, path selection is both difficult and critical to the success of the surgery. This paper presents a method for finding optimally safe and effective paths while accounting for target positioning error.
机译：在人工耳蜗植入手术中，将电极阵列永久植入，以刺激听觉神经并让聋人听到。当前的外科手术技术需要对颞骨的乳突区域进行大范围的挖掘，并且需要一到三个小时的时间，以避免对生命结构的损害。最近，已经提出了一种侵入性更小的方法—经皮耳蜗通路，其中从颅骨表面到耳蜗钻一个孔。通过将基准系统连接到患者的头骨上，然后在术前CT上选择一个进入点和一个目标点，来确定钻孔路径。钻头前进到目标，电极穿过孔放置，并且在颅骨表面植入刺激器。面临的主要挑战是确定安全有效的钻探路径，这很可能避免特定的重要结构-面神经，听小骨和外耳道-到达耳蜗的基底转弯处。这四个特征之间的距离在几毫米之内，钻头的直径为一毫米，目标位置确定的误差约为0.5平方根。因此，路径选择对于手术的成功既困难又至关重要。本文提出了一种在考虑目标定位误差的同时找到最佳安全有效路径的方法。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号