Choroidal angiography method and device based on optical coherence tomography imaging body scanning
A technology of optical coherence tomography and angiography, which is applied in the field of biomedical image processing, can solve the problems of unfavorable image processing segmentation and extraction, poor morphology of choroidal blood vessels, and influence on extraction and analysis of choroidal blood vessels, so as to facilitate extraction and quantitative research , The effect of eliminating the shadow of retinal blood vessels
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Embodiment 1
[0044] A choroidal angiography method based on optical coherence tomography volume scanning, its implementation steps can be divided into:
[0045] Step S1, obtaining the original data of the OCT volume scan of the fundus. Raw data are acquired using optical coherence tomography (OCT) equipment that examines samples. Embodiments described in this disclosure can use any OCT device to acquire raw data.
[0046] Step S2, extracting retinal vessel shadow data and choroidal vessel data from the original data. Among them, the extraction of retinal blood vessel shadow data mask includes:
[0047] Step B-1, segmenting the retinal pigment epithelium (RPE) layer data from the original data. The segmentation method of retinal pigment epithelium data can be a method based on threshold, a method based on graph theory and a method based on machine learning. In this embodiment, a method based on graph theory is used to segment the original data to obtain RPE data.
[0048] Step B-2, per...
Embodiment 2
[0066] A choroidal angiography device based on optical correlation tomography volume scanning, which implements the radiography method described in one embodiment to perform choroidal angiography.
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