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Dynamic full-field swept-source optical coherence tomography for high-resolution, long-depth, and

Nobuhisa Tateno1, Yue Zhu1, Suzuyo Komeda1

  • 1Computational Optics Group, University of Tsukuba, Tsukuba, Ibaraki, Japan.

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|May 11, 2026
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Summary
This summary is machine-generated.

A new dynamic spatially-coherent full-field OCT (SC-FFOCT) overcomes depth limitations and visualizes intra-tissue activities. This advanced optical coherence tomography technique achieves high-resolution 3D imaging in biological samples.

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Area of Science:

  • Biomedical Optics
  • Optical Imaging
  • Cell Biology

Background:

  • Optical coherence tomography (OCT) offers high resolution but is limited by depth of focus and signal reduction.
  • Standard OCT cannot visualize dynamic intra-tissue processes.
  • Existing methods struggle with imaging depth and real-time cellular activity.

Purpose of the Study:

  • To develop a novel OCT modality overcoming depth and dynamic imaging limitations.
  • To visualize three-dimensional structure and intra-tissue activities simultaneously.
  • To demonstrate the capability of the new technique in biological samples.

Main Methods:

  • Development of dynamic spatially-coherent full-field OCT (SC-FFOCT).
  • Implementation of computational refocusing to extend imaging depth.
  • Utilization of a repetitive acquisition protocol for dynamic OCT imaging.

Main Results:

  • Achieved in-focus lateral resolution of 1.4 µm and axial resolution of 6.5 µm.
  • Demonstrated extended imaging depth through computational refocusing.
  • Successfully visualized dynamic intra-tissue activities in human breast adenocarcinoma spheroids (MCF-7 cell line).

Conclusions:

  • Dynamic SC-FFOCT effectively overcomes the depth limitations of conventional OCT.
  • The modality enables high-resolution, volumetric, dynamic imaging of biological structures.
  • SC-FFOCT provides a powerful tool for studying cellular dynamics in 3D within biological tissues.