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. 2021 Jun 9;14:1631–1641. doi: 10.2147/JPR.S316743

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© 2021 Wu and Wang.

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Diagram of hand-held OCT needle imaging system.

Abbreviations: FC, fiber coupler; PC, polarization controller; GSM, galvanometer scanning mirror; OCT, optical coherence tomography; GRIN, gradient-index.