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Interplane bulk motion analysis and removal based on normalized crossâcorrelation in optical coherence tomography angiography
- Source :
- Journal of Biophotonics. 13
- Publication Year :
- 2020
- Publisher :
- Wiley, 2020.
-
Abstract
- Bulk motion seriously degrades the image quality of optical coherence tomography angiography (OCTA). Conventional correction methods focus on in-plane displacement, while the bulk motion component perpendicular to B-scans also introduces noise. This work first presents an evaluation of this component using a specific scan protocol and an approximate expression derived from peak-normalized cross-correlation values, and then quantitatively assesses how interplane bulk motion noise reduce the sensitivity of cross-sectional angiograms. Finally, we developed a repetitive bulk motion correction method based on the estimated displacements and redundant volume scans. The correction does not require registration and angiogram reconstruction of low flow sensitivity frames, and the results of in vivo mice skin OCTA imaging experiments show that the proposed method can effectively reduce bulk motion noise caused by cardiac and respiratory motion and occasional shaking, and improve OCTA image quality, which has practical significance for clinical OCTA diagnosis and analysis.
- Subjects :
- Image quality
Acoustics
General Physics and Astronomy
01 natural sciences
General Biochemistry, Genetics and Molecular Biology
Displacement (vector)
010309 optics
Mice
Motion
Optical coherence tomography
0103 physical sciences
medicine
Perpendicular
Animals
General Materials Science
Sensitivity (control systems)
Skin
Physics
medicine.diagnostic_test
Cross-correlation
010401 analytical chemistry
Angiography
General Engineering
General Chemistry
0104 chemical sciences
Noise
Cross-Sectional Studies
Focus (optics)
Tomography, Optical Coherence
Subjects
Details
- ISSN :
- 18640648 and 1864063X
- Volume :
- 13
- Database :
- OpenAIRE
- Journal :
- Journal of Biophotonics
- Accession number :
- edsair.doi.dedup.....51f8a2ab6a4c9986d9195eb58e447569