公开(公告)号：US20140340689A1

公开(公告)日：2014-11-20

申请号：US14278424

申请日：2014-05-15

申请人： Eman Namati ,  Muhammad Al-Kaisi ,  Matthew A. Sinclair ,  Benedikt Graf ,  David Vader

发明人： Eman Namati ,  Muhammad Al-Kaisi ,  Matthew A. Sinclair ,  Benedikt Graf ,  David Vader

IPC分类号： G01B9/02

CPC分类号： G01B9/02091 ,  A61B5/0066 ,  A61B5/0084

摘要： The present disclosure provides an OCT imaging system to reduce or eliminate frequency-domain aliasing artifacts. The frequency is shifted using a carrier frequency to define a sampling range substantially centered on the carrier frequency. An image of the sample is generated from a displayed imaging range that consists of a subset of the frequencies within the sampling range. Furthermore, the system may be configured to determine the carrier frequency such that a Nyquist frequency corresponding to the shifted frequency is extended beyond either an upper or a lower bound of an OCT quality envelope corresponding to the first portion of light. Additionally, the carrier frequency may be determined such that a lower bound of the OCT quality envelope is greater or less than a zero-frequency DC limit.

摘要翻译： 本公开提供了一种用于减少或消除频域混叠伪影的OCT成像系统。 使用载波频率来移动频率以限定基本上以载波频率为中心的采样范围。 从由采样范围内的频率子集组成的显示成像范围产生样本的图像。 此外，系统可以被配置为确定载波频率，使得对应于移位频率的奈奎斯特频率延伸超过对应于第一部分光的OCT质量包络的上限或下限。 另外，可以确定载波频率使得OCT质量包络的下限大于或小于零频率DC限制。