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Spherical aberration correction in multiphoton fluorescence imaging using objective correction collar.

Wen Lo1, Yen Sun, Sun-Jan Lin

  • 1National Taiwan University, Department of Physics, Taipei 106, Taiwan.

Journal of Biomedical Optics
|October 19, 2005
PubMed
Summary
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This study shows that using a correction collar with water immersion objectives can improve deep-tissue multiphoton imaging. Adjusting the collar enhances signal detection in biological samples like skin and tendon.

Area of Science:

  • Biomedical Optics
  • Bioimaging
  • Microscopy

Background:

  • Multiphoton microscopy is a key 3D bioimaging technique.
  • In-depth imaging is limited by spherical aberration and scattering.
  • These issues degrade image resolution and reduce signal.

Purpose of the Study:

  • To investigate the use of a correction collar for improving multiphoton imaging.
  • To assess the impact of the correction collar on image resolution and signal detection in biological tissues.

Main Methods:

  • Utilized a water immersion objective with an adjustable correction collar.
  • Examined human skin and rat tail tendon samples.
  • Measured axial fluorescence and second harmonic generation signal profiles.

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Main Results:

  • Qualitative image resolution improvement was not evident.
  • Axial signal profiles showed increased detected multiphoton signals.
  • Maximum signal increases of 36% (skin fluorescence) and 57% (tendon SHG) were observed.

Conclusions:

  • The correction collar can correct for spherical aberration in deep-in-depth multiphoton imaging.
  • Optimal correction collar settings require examination for specific tissue types.
  • This method offers potential for enhanced signal detection in bioimaging applications.