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Advances in adaptive optics-based two-photon fluorescence microscopy for brain imaging.

Pranoy Sahu1, Nirmal Mazumder2

  • 1Institute of Protein Biochemistry, National Research Council, Naples, Italy.

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|November 16, 2019
PubMed
Summary

Two-photon fluorescence (TPF) microscopy enables deep brain imaging but suffers from distortions. Adaptive optics improve resolution and signal-to-noise ratio for advanced in vivo functional imaging applications.

Keywords:
Adaptive opticsBrain imagingTwo-photon fluorescence microscopy

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Area of Science:

  • Biomedical Optics
  • Neuroscience Imaging
  • Microscopy Techniques

Background:

  • Two-photon fluorescence (TPF) microscopy offers deep tissue imaging for molecular and cellular detail in the mammalian brain.
  • Current TPF limitations include wavefront distortions from optics and biological samples, reducing signal quality and resolution with depth.

Purpose of the Study:

  • To review advances in TPF microscopy for in vivo functional imaging.
  • To provide guidance on selecting optimal TPF technologies for various applications, emphasizing adaptive optics.

Main Methods:

  • Discussion of TPF microscopy advancements.
  • Focus on adaptive optics (AO) for aberration correction.
  • Review of in vivo functional imaging applications.

Main Results:

  • TPF microscopy provides high-resolution, in-depth imaging of biological structures.
  • Wavefront distortions significantly degrade image quality and penetration depth.
  • Adaptive optics effectively compensate for optical aberrations, enhancing imaging performance.

Conclusions:

  • Adaptive optics are crucial for overcoming limitations in deep tissue TPF imaging.
  • Optimized TPF techniques, particularly with AO, enhance in vivo functional brain imaging capabilities.
  • Guidelines are provided for selecting appropriate TPF technologies based on imaging needs.