Patent ID: 9687147
Date: 2017-06-27
CPC Classifications: A61B,G01B

Claim:
1. An optical coherence tomography device comprising: an OCT optical system including a scanner configured to scan a test subject by measurement light, the OCT optical system being configured to detect an OCT signal generated based on the measurement light and reference light corresponding to the measurement light; a processor; and memory storing instructions, when executed by the processor, causing the optical coherence tomography device to execute: an image generation processing of processing a plurality of first OCT signals, which are temporally different from each other with respect to a same position on the test subject, and generating, based on the plurality of first OCT signals, a three-dimensional motion contrast image, which is obtained by imaging distribution of a moving object in a depth direction in each of the scanning position; a Doppler shift detection processing of processing a plurality of second OCT signals which are temporally different from each other with respect to the same position on the test subject, and detecting Doppler shift in a depth direction in a scanning position specified on the three-dimensional motion contrast image, the plurality of second OCT signals being detected at timings different from the timings when the plurality of first OCT signals are detected; and a velocity obtaining processing of obtaining an absolute velocity of the moving object based on the Doppler shift detected by the Doppler shift detection processing and a three-dimensional structure of the test subject obtained from the three-dimensional motion contrast image generated by the image generation processing.