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Fluorescence Lifetime Imaging of Molecular Rotors in Living Cells

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Published on: February 9, 2012

Super-sensitivity multiphoton frequency-domain fluorescence lifetime imaging microscopy.

Yide Zhang, Aamir A Khan, Genevieve D Vigil

|September 9, 2016

Summary

This summary is machine-generated.

A new super-sensitive chemical imaging technique, multiphoton frequency-domain fluorescence lifetime imaging microscopy (MPM-FD-FLIM), achieves a 2x speed improvement and enhanced sensitivity. Simple data analysis modifications validate an existing signal-to-noise ratio model.

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Area of Science:

Biophotonics
Chemical Imaging
Microscopy

Background:

Multiphoton frequency-domain fluorescence lifetime imaging microscopy (MPM-FD-FLIM) is a powerful technique for chemical imaging.
Conventional MPM-FD-FLIM has theoretical limits in imaging speed and sensitivity.
An analytical model for MPM-FD-FLIM signal-to-noise ratio (SNR) was previously proposed.

Purpose of the Study:

To experimentally validate the analytical model for MPM-FD-FLIM SNR.
To demonstrate a super-sensitive chemical imaging technique with improved speed and sensitivity.
To showcase the benefits of modified data analysis in MPM-FD-FLIM.

Main Methods:

Implementation of modified data analysis on a conventional MPM-FD-FLIM microscope.
Conducting a series of experiments to assess imaging speed and sensitivity.
Comparison of experimental results with the predictions of the analytical SNR model.

Main Results:

Achieved a 2x improvement in imaging speed beyond the theoretical limit of conventional MPM-FD-FLIM.
Demonstrated unprecedented sensitivity across a wide range of fluorescence lifetimes.
Experimentally validated the analytical model for MPM-FD-FLIM SNR.

Conclusions:

The modified data analysis approach significantly enhances MPM-FD-FLIM performance.
The validated model provides a framework for optimizing future MPM-FD-FLIM systems.
This technique offers a promising advancement for super-sensitive chemical imaging applications.