STEREOTACTIC EEG SENSOR REGISTRATION

立体定向脑电图传感器注册

• 批准号: 2714707
• 负责人: K Jeffrey Eriksen
• 金额: $ 7.52万
• 依托单位: ELECTRICAL GEODESICS, INC.
• 依托单位国家: 美国
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-09-05 至 1999-04-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/2714707
• 关键词: biomedical equipment development; biosensor device; charge coupled device camera; clinical biomedical equipment; clinical research; electroencephalography; epilepsy; human subject; method development; nervous system disorder diagnosis; neurosurgery

DESCRIPTION: In the diagnosis of neurological disorders such as epilepsy, inexpensive recordings of dense array (128-channel) EEG could provide important information of spike and seizure activity to supplement other functional neuroimaging in the guidance of computer-assisted sterotatic surgery. For this purpose, accurate 3D registration of the EEG sensors is required. We propose to build a specialized 3D head and sensor digitizer that provides low cost in relation to existing methods, fast scanning, automatic registration with the MRI, and integration of 3D head and EEG data in commercial VR (virtual reality) formats. The multiple-camera VR recordings will allow close inspection of the patient's epileptic behavior from any angle, synchronized with 3D displays of the EEG (recorded voltage mapped to the head surface or source models mapped to the cortical surface of the MRI.) The Phase I research will produce a prototype system that proves the feasibility of 3D localization of scalp sensors (electrodes), plus the contours of the face and head, using a non-contacting computer vision photogrammetric method. Ten low-cost CCD cameras are digitized and corresponding points in multiple images are then registered to provided an accurate 3D model of the head, face, and EEG sensor positions. PROPOSED COMMERCIAL APPLICATION: NOT AVAILABLE

描述：在神经系统疾病如癫痫的诊断中， 密集阵列（128通道）EEG的廉价记录可以提供 重要信息，以补充其他 功能性神经影像学在计算机辅助立体定向中的应用 手术 为此，EEG传感器的精确3D配准是 必需的. 我们建议建立一个专门的3D头和传感器数字化仪 其提供了相对于现有方法的低成本，快速扫描， 与MRI自动配准，以及3D头部和EEG的集成 商业VR（虚拟现实）格式的数据。 多摄像头VR 记录将允许对患者的癫痫行为进行密切检查 从任何角度，与EEG的3D显示同步（记录的电压 映射到头部表面或映射到皮层表面的源模型 MRI）。第一阶段的研究将产生一个原型系统， 证明了头皮传感器（电极）三维定位的可行性， 加上面部和头部的轮廓，使用非接触式计算机 视觉摄影测量法 10台低成本CCD摄像机被数字化， 然后，多个图像中的对应点被配准， 头部、面部和EEG传感器位置的精确3D模型。 拟议商业应用：不可用