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Related Concept Videos

Protein Dynamics in Living Cells01:19

Protein Dynamics in Living Cells

Different fluorescence-based techniques are used to study the protein dynamics in living cells. These techniques include FRAP, FRET, and PET.
Fluorescent recovery after photobleaching (FRAP) is a fluorescent-protein-based detection technique used to quantify protein movement rates within the cell. This method exposes a small portion of the cell to an intense laser beam. The laser beam causes permanent photobleaching of the fluorophore-tagged proteins in the exposed region. As the bleached...

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Related Experiment Video

Updated: May 24, 2026

Fluorescence Lifetime Imaging of Molecular Rotors in Living Cells
09:45

Fluorescence Lifetime Imaging of Molecular Rotors in Living Cells

Published on: February 9, 2012

Source location from fluorescence lifetime in disordered media.

N Irishina1, M Moscoso, R Carminati

  • 1Instituto Gregorio Millán, Universidad Carlos III de Madrid, Avenida de la Universidad 30, 28911 Leganés, Spain.

Optics Letters
|March 2, 2012
PubMed
Summary
This summary is machine-generated.

Source location in scattering media is achievable using fluorescence lifetime and prior information. Increased scattering improves accuracy, demonstrating quantitative lifetime imaging

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Area of Science:

  • Biomedical Optics
  • Photonics
  • Imaging Science

Background:

  • Accurate source localization is critical in various applications, including biomedical imaging and diagnostics.
  • Scattering media, common in biological tissues, pose significant challenges for traditional imaging techniques due to light distortion.
  • The ill-posed nature of inverse problems like source localization complicates accurate determination.

Purpose of the Study:

  • To demonstrate the feasibility of solving the source location problem within scattering media.
  • To investigate the impact of scattering levels on the accuracy of source localization.
  • To highlight the potential of quantitative fluorescence lifetime imaging (qFLIM) in complex optical environments.

Main Methods:

  • Utilizing fluorescence lifetime measurements as a key parameter for source identification.
  • Incorporating realistic a priori information to constrain the inverse problem.
  • Analyzing the relationship between scattering properties of the medium and localization accuracy.

Main Results:

  • Successfully solved the source location problem in a scattering medium.
  • Observed a reduction in the intrinsic ill-posedness of the problem with increasing scattering.
  • Demonstrated that higher scattering levels correlate with improved localization accuracy.

Conclusions:

  • Quantitative fluorescence lifetime imaging is a promising technique for source localization in scattering media.
  • The method shows high potential for applications requiring precise localization in complex biological tissues.
  • This proof-of-principle study validates the utility of qFLIM in overcoming challenges posed by scattering.