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Updated: Jan 27, 2026

Phase Contrast and Differential Interference Contrast DIC Microscopy
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Video-rate quantitative phase analysis by a DIC microscope using a polarization camera.

Shuhei Shibata1,2, Wataru Takano1,2, Nathan Hagen1,2

  • 1Department of Optical Engineering, Utsunomiya University, 7-1-2 Yoto, Utsunomiya, Tochigi, Japan.

Biomedical Optics Express
|March 21, 2019
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Summary
This summary is machine-generated.

Replacing standard cameras with polarization cameras in differential interference contrast (DIC) microscopy allows for real-time imaging of transparent tissues. This advancement enables snapshot quantitative phase analysis for dynamic biological processes.

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Area of Science:

  • Biomedical Optics
  • Microscopy Techniques
  • Quantitative Phase Imaging

Background:

  • Standard differential interference contrast (DIC) microscopy typically uses intensity cameras.
  • Real-time imaging of dynamic biological processes in transparent tissues is challenging.
  • Quantitative phase analysis offers valuable insights into cellular structures and dynamics.

Purpose of the Study:

  • To demonstrate the advantages of replacing an intensity camera with a polarization camera in DIC microscopy.
  • To enable snapshot quantitative phase analysis for real-time imaging of living transparent tissues.
  • To quantify the phase measurement accuracy of the proposed method.

Main Methods:

  • Implemented a polarization camera in a standard DIC microscope setup.
  • Developed a method for snapshot quantitative phase analysis.
  • Utilized a phantom of glass beads in lacquer to quantify phase measurement accuracy.
  • Imaged dynamic biological processes in living medaka eggs.

Main Results:

  • The use of a polarization camera enables snapshot quantitative phase analysis.
  • Real-time imaging of transparent tissues, such as living medaka eggs, is achievable.
  • Phase measurement accuracy was quantified using a phantom.
  • The method successfully visualized the pumping heart and blood flow in medaka eggs.

Conclusions:

  • Replacing intensity cameras with polarization cameras in DIC microscopy significantly enhances imaging capabilities.
  • Snapshot quantitative phase analysis facilitates real-time observation of dynamic biological processes.
  • The developed method provides accurate phase measurements and is suitable for live biological imaging.