| Autor: |
Wolfgang, Trasischker, René M, Werkmeister, Stefan, Zotter, Bernhard, Baumann, Teresa, Torzicky, Michael, Pircher, Christoph K, Hitzenberger |
| Rok vydání: |
2013 |
| Předmět: |
|
| Zdroj: |
Journal of biomedical optics. 18(11) |
| ISSN: |
1560-2281 |
| Popis: |
We developed a three-beam Doppler optical coherence tomography (OCT) system that enables measurement of the velocity vector of moving particles in three-dimensions (3-D). The spatial orientation as well as the magnitude of motion can be determined without prior knowledge of the geometry of motion. The system combines three spectral-domain OCT interferometers whose sample beams are focused at the sample by a common focusing lens at three different angles. This provides three spatially independent velocity components simultaneously from which the velocity vector can be reconstructed. We demonstrate the system in a simple test object (rotating disc), a flow phantom, and for blood flow measurements in the retina of a healthy human subject. Measurements of blood flow at a venous bifurcation achieve a good agreement between in- and outflow and demonstrate the reliability of the method. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
