Acta Optica Sinica, Volume. 44, Issue 5, 0517001(2024)
Split-Spectrum Threshold Decorrelation Optical Coherence Tomography Angiography Method Based on Local Signal-to-Noise Ratio
Fig. 1. Static voxel simulation distribution. (a) Static voxel distribution of spatiotemporal kernel of 25; (b) fitting results of classification curves with spatiotemporal kernels of 10, 20, 25, 30, 40, and 50, respectively. Solid line represents final selected curve with N=25
Fig. 2. Schematic diagram of template in I-D space
Fig. 3. Algorithm flow chart
Fig. 4. Structure diagram of SS-OCT system
Fig. 5. Skin data imaging results. (a) Results of proposed algorithm; (b) results of SSADA algorithm; (c) results of SVOCT algorithm; (d) results of Pearson correlation method; (c′) blood flow cross-section of SVOCT algorithm; (d′) blood flow cross-section of Pearson correlation method. Boxes in (a)-(d) represent selected static signal areas
Fig. 6. Cross-section of blood flow before and after static suppression. (a) No static voxel suppression; (b) after static voxel suppression;(c) OCT original structural image
Fig. 7. Result comparison of proposed algorithm and other strength OCTA. (a) Results of proposed algorithm; (b) results of SSADA algorithm; (c) results of SVOCT; (d) results of Pearson correlation method. Solid boxes are regions of interest
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Lutong Wang, Yi Wang, Yushuai Xu, Shiliang Lou, Huaiyu Cai, Xiaodong Chen. Split-Spectrum Threshold Decorrelation Optical Coherence Tomography Angiography Method Based on Local Signal-to-Noise Ratio[J]. Acta Optica Sinica, 2024, 44(5): 0517001
Category: Medical optics and biotechnology
Received: Nov. 8, 2023
Accepted: Dec. 29, 2023
Published Online: Mar. 15, 2024
The Author Email: Wang Yi (koala_wy@tju.edu.cn)