Paired-angle-rotation scanning optical coherence tomography forward-imaging probe.
Paired-angle-rotation scanning optical coherence tomography forward-imaging probe.
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DOI：
10.1364/ol.31.001265
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发表时间：
2006-05
期刊：
影响因子：
3.6
通讯作者：
Jigang Wu;M. Conry;Chunhui Gu;Fei Wang;Z. Yaqoob;Changhuei Yang
中科院分区：
文献类型：
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作者：
Jigang Wu;M. Conry;Chunhui Gu;Fei Wang;Z. Yaqoob;Changhuei Yang
我们报道了一种新型的前向成像光学相干断层扫描（OCT），针-探针对角度旋转扫描OCT （PARS-OCT）探针。探头使用两个旋转角度的梯度折射率透镜，在探头前方区域的宽角弧（约19度半角）上扫描输出OCT探头光束。除其他优点外，该探头设计易于小型化，并且能够进行多种扫描模式，包括体积扫描。为了证明探针设计的优势，我们构建了外径为1.65 mm的探针原型，并利用它获得了非洲爪蟾蝌蚪鳃结构的四张OCT图像，相邻图像之间的角度为45度。在样品上使用450微米照明功率的原型探头测量系统灵敏度为93 dB。探针的轴向分辨率为9.3微米，横向分辨率为10.3-12.5微米。
We report a novel forward-imaging optical coherence tomography (OCT), needle-probe paired-angle-rotation scanning OCT (PARS-OCT) probe. The probe uses two rotating angled gradient-index lenses to scan the output OCT probe beam over a wide angular arc (approximately 19 degrees half-angle) of the region forward of the probe. Among other advantages, this probe design is readily amenable to miniaturization and is capable of a variety of scan modes, including volumetric scans. To demonstrate the advantages of the probe design, we have constructed a prototype probe with an outer diameter of 1.65 mm and employed it to acquire four OCT images, with a 45 degrees angle between adjacent images, of the gill structure of a Xenopus laevis tadpole. The system sensitivity was measured to be 93 dB by using the prototype probe with an illumination power of 450 microW on the sample. Moreover, the axial and the lateral resolutions of the probe are 9.3 and 10.3-12.5 microm, respectively.