• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Optical Coherence tomography and coherence domain optical methods in biomedicine XVII >Rotational Dove Prism Scanning Dual Angle Doppler OCT
【24h】

Rotational Dove Prism Scanning Dual Angle Doppler OCT

机译：旋转鸽子棱镜扫描双角度多普勒OCT

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

Traditional Doppler OCT is highly sensitive to motion artifacts due to the dependence on the Doppler angle. This limits its reproducibility in clinical practice. To overcome this limitation, we use a bidirectional technique with a novel rotating scanning scheme. The volume is probed simultaneously from two distinct illumination directions with variable controlled orientations, allowing reconstruction of the true flow velocity, independently of the vessel orientation. A Dove prism in the sample arm permits a rotation of the illumination directions that can be synchronized with the standard beam steering device. The principle is implemented with Swept Source OCT at 1060nm with 100,000 A-Scans/s. We apply the system to human retinal absolute blood velocity measurement by performing segment and circumpapillary time series scans around the optic nerve head. We also demonstrate microvasculature imaging by calculation of squared intensity differences between successive tomograms.
机译：由于对多普勒角度的依赖性，传统的多普勒OCT对运动伪影高度敏感。这限制了其在临床实践中的可重复性。为了克服此限制，我们使用了具有新颖旋转扫描方案的双向技术。同时从两个不同的照明方向以可变的受控方向探测体积，从而可以独立于容器方向而重建真实流速。样品臂中的道威棱镜可实现与标准光束转向设备同步的照明方向旋转。该原理是通过1060nm扫描源OCT和100,000 A-Scans / s来实现的。我们通过在视神经头周围进行节段和乳头周围时间序列扫描，将系统应用于人体视网膜绝对血流速度测量。我们还通过计算连续断层图之间的平方强度差来演示微脉管系统成像。

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