Depixelation of coherent fiber bundle imaging by fiber-core-targeted scanning
| Autor: | Wolfgang Rohringer, Mikael T. Erkkilä, Stefan Preißer, Harald Sattmann, Richard Haindl, Balthasar Fischer, Mengyang Liu, Rainer A. Leitgeb, Qian Li, Wolfgang Drexler |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
medicine.diagnostic_test business.industry Iterative reconstruction Laser Galvanometer Atomic and Molecular Physics and Optics law.invention Core (optical fiber) symbols.namesake Optics Optical coherence tomography Pixelation law Fiber laser medicine symbols Fiber Electrical and Electronic Engineering business Engineering (miscellaneous) |
| Zdroj: | Applied optics. 60(26) |
| ISSN: | 1539-4522 |
| Popis: | A novel fast proximal scanning method, to the best of our knowledge, termed fiber-core-targeted scanning (FCTS), is proposed for illuminating individual fiber cores sequentially to remove the pixelation effect in fiber bundle (FB) imaging. FCTS is based on a galvanometer scanning system. Through a dynamic control of the scan trajectory and speed using the prior knowledge of fiber core positions, FCTS experimentally verifies a precise sequential delivery of laser pulses into fiber cores at a maximal speed of 45,000 cores per second. By applying FCTS on a FB-based photoacoustic forward-imaging probe, the results demonstrate that FCTS eliminates the pixelation effect and improves the imaging quality. |
| Databáze: | OpenAIRE |
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