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２巻２号 （2021年10月） Volume 2, Number 2 (October 2021) |
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解説: Optical coherence tomography の展開 pp. 45-52 Technical Review: Deployment of optical coherence tomography 椎名 達雄 Tatsuo Shiina |
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Abstract OCT -Optical Coherence Tomography- is a low coherence cross-sectional imaging method. It is mainly developed in ophthalmology. This technology is invented by Prof. Fujimoto (MIT) and Prof. Tanno (Yamagata Univ.). At first, it had time domain method to scan the reference optical path mechanically, after that it had the Fourier domain method not to scan mechanically but get the depth information with spectrometer or wavelength scanning light source. They are technically explained that each method has a quality all its own. In this report, principle of OCT measurement was explained with its interferogram and resolution theoretically. The deployment of those methods are figured in comparison with one another. Some applications for basic medical sciences are stated concretely. Skin evaluation and dental application are mentioned. The industrial applications for OCT are refered in the summary, too. |