Two-site microendoscopic imaging probe for simultaneous three-dimensional imaging at two anatomic locations in
Optics Letters
|June 14, 2024
Summary
Researchers developed a novel in vivo two-site imaging probe (TIP) for simultaneous cellular-resolution imaging at two locations. This breakthrough enables deeper understanding of complex biological processes by overcoming single-site measurement limitations.
Area of Science:
- Biomedical Engineering
- Optical Imaging
- In Vivo Microscopy
Background:
- Simultaneous imaging of multiple biological sites is crucial for understanding complex processes like immune responses.
- Current imaging techniques often provide limited spatial information, hindering comprehensive analysis.
Purpose of the Study:
- To develop and demonstrate an in vivo two-site imaging probe (TIP) capable of simultaneous imaging at two distinct anatomic locations.
- To enable cellular-resolution, multi-site imaging for advanced biological research.
Main Methods:
- The TIP utilizes two identical bendable graded index (GRIN) lenses.
- A two-photon, two-color fluorescence imaging system was employed.
- A blind linear unmixing algorithm was applied to minimize spectral bleedthrough.
Main Results:
- The system achieved simultaneous two-site, two-photon, two-color fluorescence imaging.
- Demonstrated imaging of autofluorescent anti-cancer drugs and a live hybrid tumor.
- Each GRIN lens provided a field of view of 162 × 162 × 170 µm³ with a numerical aperture of 0.5.
Conclusions:
- The developed TIP successfully enables simultaneous in vivo imaging at two separated locations.
- This technology offers a powerful tool for studying spatially distributed biological phenomena.
- The TIP system has potential applications in drug delivery monitoring and cancer research.
