Method and device for generating a wide-field optical coherence tomography (OCT) image
An optically coherent, wide-field-of-view technology, applied in applications, medical science, and eye-testing equipment, can solve problems such as increasing acquisition time
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no. 1 example
[0053] This example demonstrates a method for mapping two 3D tomogram scans acquired from a dual-source SD-OCT system to a common coordinate system generated using correlated fundus images to generate a wide-field optical coherence tomogram . For descriptive convenience only, one of the two input 3D volume tomograms is referred to as the reference optical coherence volume tomogram V R , while the other is called the target optical coherence volume tomogram V T . In typical dual-source SD-OCT, optical coherence tomography and fundus images are scanned simultaneously. Therefore the optical coherence volume tomogram and the associated fundus image should be considered to have been aligned in the same coordinate system after simultaneous scanning. Fundus images should cover a larger field of view (larger retinal area) than optical coherence tomography and OFI.
[0054] In this example, with V R The associated reference fundus image L R and V R is considered as the reference...
no. 2 example
[0078] This example demonstrates a method for mapping two optical coherence volume tomograms acquired from single-source OCT to a common coordinate system using correlated fundus images to generate a wide-field optical coherence volume tomogram. In single-source SD-OCT, optical coherence volume tomograms and fundus images are sequentially scanned separately, and the resulting optical coherence volume tomograms and their associated fundus images may not be in the same coordinate system, which is different from where the optical Unlike in dual-source OCT, coherent volume tomograms and their associated fundus images are always in the same coordinate system.
[0079] An input scan is considered to obtain a reference optical coherence volume tomogram V R , while the other is considered to obtain the target optical coherence volume tomogram V T .
[0080] Figure 7 A schematic flow diagram of the method presented in this example is shown.
[0081] In this example, the optical co...
no. 3 example
[0092] This example demonstrates a method for mapping more than two (e.g., 4) OCT optical coherence volume tomogram scans acquired from dual-source OCT into a common coordinate system generated using correlated fundus images to generate a wide field of view The method of optical coherence volume tomography.
[0093] Figure 8 An exemplary schematic diagram of the method demonstrated in this example is shown.
[0094] As shown in the figure, in step 801, a reference optical coherence volume tomogram V is selected from four optical coherence volume tomograms R .
[0095] In step 802, the remaining three non-reference optical coherence volume tomograms, that is, the target optical coherence volume tomograms, are respectively compared with the reference optical coherence volume tomograms V selected in step 801 R pair.
[0096] At step 803, for each pairing, the method presented in Example 1 can be applied to bring each non-reference (target) optical coherence volume tomogram i...
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