研究生: |
陳勝宗 Chen Sheng Tsung |
---|---|
論文名稱: |
屏面掃描式三維光學同調斷層造影系統之設計與架設 Design and construction of en-face three-dimensional optical coherence tomography |
指導教授: |
郭文娟
Kuo, Wen-Chuan |
學位類別: |
碩士 Master |
系所名稱: |
光電工程研究所 Graduate Institute of Electro-Optical Engineering |
論文出版年: | 2007 |
畢業學年度: | 95 |
語文別: | 中文 |
論文頁數: | 56 |
中文關鍵詞: | 屏面掃描 、三維光學同調 |
英文關鍵詞: | en-face, OCT |
論文種類: | 學術論文 |
相關次數: | 點閱:215 下載:0 |
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光學同調斷層攝影術(Optical Coherence Tomography;OCT)是一種基於低同調干涉儀原理的造影技術,自1991年被提出以來,已經成為一個能提供非接觸式與高速斷層影像的有利工具。藉由搭配寬頻近紅外光源的使用,OCT可在數釐米的穿透深度範圍內具有10到30微米的空間解析力。在本研究中,我們設計並架設一套屏面掃描式三維光學同調斷層造影系統:以超高亮度發光二極體為光源,搭配聲光調變器產生並偵測外差干涉訊號。以此自行建立的架構下,我們可以高速掃描鏡子產生大面積屏面掃描影像,最後藉由多張二維屏片影像重組出三維立體影像,可用來完整描述待測物體的結構而不會遺漏掉任何有用的資訊。
Since its introduction in 1991, optical coherence tomography (OCT), based on low coherence interferometry, has been used as a powerful tool to support non-contact and high-speed tomographic images. By using broadband near-infrared light sources, OCT achieves resolutions of 10 to 30 m with depth penetrations of the order of a few milimeters. In this research, we designed and construct an en-face three-dimensional (3D) OCT system: a superluminescent diode is used as a light source in combination with acousto-optic modulators for heterodyne signal generation and detection. With our setup we are able to scan en-face areas by using a resonant scanning mirror. After reconstruction of several 2D sections, 3D OCT image can fully describe the 3D morphology of samples under study, no structural details are missed.
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