| 摘要 |
<P>PROBLEM TO BE SOLVED: To achieve a quantitative measuring instrument of a fundus blood flow simply extracting the retinal blood vessels using the two-dimensional en-face image and two-dimensional tomographic blood flow image of light coherence tomography to quantitatively determine its blood flow. <P>SOLUTION: A structure of the retinal blood vessels is extracted by a Doppler light coherence angiographic means to enable the quantification of the blood flow of the retinal blood vessels. The Doppler light coherence angiographic means is constituted so that an en-face blood vessel image and a blood flow image are formed by light coherence tomography, the diameter, direction and position of the blood vessel are obtained from both the en-face blood vessel image and the blood flow image to determine the blood flow, and the frequency shift of complex OCT (optical coherence tomography) data is analyzed to measure the velocity of the fundus blood flow. <P>COPYRIGHT: (C)2009,JPO&INPIT |
