发明名称 |
Method and apparatus for improving image clarity and sensitivity in optical coherence tomography using dynamic feedback to control focal properties and coherence gating |
摘要 |
Methods for optical imaging, particularly with optical coherence tomography, using a low coherence light beam reflected from a sample surface and compared to a reference light beam, wherein real time dynamic optical feedback is used to detect the surface position of a tissue sample with respect to a reference point and the necessary delay scan range. The delay is provided by a tilting/rotating mirror actuated by a voltage adjustable galvanometer. An imaging probe apparatus for implementing the method is provided. The probe initially scans along one line until it finds the tissue surface, identifiable as a sharp transition from no signal to a stronger signal. The next time the probe scans the next line it adjusts the waveform depending on the previous scan. An algorithm is disclosed for determining the optimal scan range.
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申请公布号 |
EP2333521(A1) |
申请公布日期 |
2011.06.15 |
申请号 |
EP20100182892 |
申请日期 |
2002.04.30 |
申请人 |
THE GENERAL HOSPITAL CORPORATION |
发明人 |
TEARNEY, GUILLERMO, J.;BOUMA, BRETT, EUGENE |
分类号 |
G01N21/17;G01N21/47;A61B5/00;A61B10/00;G01B9/02 |
主分类号 |
G01N21/17 |
代理机构 |
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地址 |
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