光學同調斷層掃描術是利用光的散射解析深度與強度而成立體影像的一種高解析度技術，在醫學應用方面，目前已成為眼科學之診斷標準，同時在放射學科亦有可供臨床使用之產品，而心臟學科之研發已接近成熟上市階段。

Optical coherence tomography (OCT) is an image capturing method to obtain and process optical signals from within optical scattering media. The resulting images are three-dimensional and with a resolution at micrometer
level. In clinical applications, OCT has become a diagnostic standard in ophthalmology, has commercial products available for radiology use, and has been expected to have a great impact on cardiology in the near future.