Flow measurement using high speed spectral optical coherence tomography

Optical Coherence Tomography is a non-invasive imaging modality with high resolution (5 to 20μm) that can provide flow velocity information by calculating the Doppler frequency shift. In this paper, a high speed spectral domain optical coherence tomography system was demonstrated. An achievable scanning speed of 92k line/sec has been reached by using an ultra-high speed linear array CCD camera. The measurable flow velocity range is [−24, 24]mm/s using this system. Early stage Chicken embryo heart blood flow was measured in vivo.