光学相干层析术是一种新型的对活体组织进行非侵入的光学诊断成像技术。它将低相干干涉仪与共焦扫描显微术结合在一起，去掉物镜焦点之外的散射光，利用高灵敏度的探测技术，实现在光散射介质如生物组织中获得清晰的分层图像。

Optical coherent tomography is a novel technique to perform optical hiopsy or noninvasive optical diagnostic imaging of in vivo tissues. It is a combination of low-coherence interferometry and confocal microscopy. Its enhanced optical section performance in highly scattering media is achieved through high detection sensitivity and high constrast rejection of out-of-focal light. It has the potential for fuiure routine applications in clinical diagnostic situations.