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Multimodal Imaging and Spectroscopy Fiber-bundle Microendoscopy Platform for Non-invasive, In Vivo Tissue Analysis
Published on: October 17, 2016
Rotational multiphoton endoscopy with a 1 microm fiber laser system
Gangjun Liu1, Tuqiang Xie, Ivan V Tomov
1Beckman Laser Institute, University of California, Irvine, California 92612, USA.
Optics Letters
|August 4, 2009
Summary
We developed a novel multiphoton microendoscopy system using a rotational probe and a femtosecond laser. This innovation enables full-view imaging for biological tissue analysis.
Area of Science:
- Biomedical Optics
- Microscopy
- Materials Science
Background:
- Multiphoton microscopy offers deep tissue imaging capabilities.
- Existing microendoscopy probes have limitations in field of view.
- Miniaturized rotational scanning is crucial for endoscopic applications.
Purpose of the Study:
- To develop and demonstrate a novel rotational microprobe for multiphoton microendoscopy.
- To achieve 360-degree imaging with a compact endoscopic system.
- To validate the system's performance using biological samples.
Main Methods:
- A rotational probe was constructed using a double-clad photonic crystal fiber, gradient index lens, microprism, and a 2.2 mm microelectronicmechanical system (MEMS) motor.
- A fiber-based femtosecond laser emitting ultrashort pulses (1.034 µm central wavelength, 50 MHz repetition rate) was employed.
- Second-harmonic-generation (SHG) imaging was performed.
Main Results:
- The microelectronicmechanical system (MEMS) motor enabled 360-degree full-view rotation of the probe.
- High-resolution second-harmonic-generation images of rat-tail tendon and fish scale were successfully acquired.
- The system demonstrated effective endoscopic imaging of biological structures.
Conclusions:
- The developed rotational probe-based multiphoton microendoscopy system provides a powerful tool for in vivo imaging.
- The compact design and full-view capability offer significant advantages over conventional methods.
- This technology has potential applications in various biomedical research and clinical diagnostics.
