FREQUENCY-DOMAIN OPTICAL COHERENCE TOMOGRAPHY WITH EXTENDED FIELD-OF-VIEW AND REDUCTION OF ALIASING ARTIFACTS
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.
申请公布号
WO2014186534(A1)
申请公布日期
2014.11.20
申请号
WO2014US38120
申请日期
2014.05.15
申请人
NINEPOINT MEDICAL, INC.;NAMATI, EMAN;AL-QAISI, MUHAMMED;SINCLAIR, MATTHEW, A.;GRAF, BENEDIKT;VADER, DAVID
发明人
NAMATI, EMAN;AL-QAISI, MUHAMMED;SINCLAIR, MATTHEW, A.;GRAF, BENEDIKT;VADER, DAVID