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Real-time quantitative elemental analysis and mapping: microchemical imaging in cell physiology.

A LeFurgey1, S D Davilla, D A Kopf

  • 1Department of Cell Biology, School of Medicine, Duke University, Durham, NC 27710.

Journal of Microscopy
|February 1, 1992
PubMed
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This study introduces a microcomputer system for real-time X-ray elemental mapping in cells. It enables detailed analysis of element and water content, advancing cell physiology research.

Area of Science:

  • Cell Biology
  • Microscopy
  • Biophysics

Background:

  • Microcomputer advancements enable digital X-ray map acquisition and processing of cells.
  • Quantitative X-ray elemental mapping provides insights into cellular composition.

Purpose of the Study:

  • To describe a microcomputer system for acquiring and processing quantitative X-ray elemental maps.
  • To enable real-time imaging and analysis of element and water content in cellular regions.
  • To facilitate studies in cell physiology and pathophysiology.

Main Methods:

  • Utilizing a graphics-based microcomputer for spectrally filtered X-ray elemental image map acquisition.
  • Fitting X-ray maps to standards and correcting for specimen drift in real-time.
  • Acquiring high-resolution quantitative energy-dispersive X-ray images of freeze-dried cryosections.

Related Experiment Videos

  • Obtaining low-dose quantitative bright-field images of frozen-hydrated sections.
  • Implementing static probe acquisition with on-line spectral processing and quantification.
  • Developing unified software for both on-line and off-line data processing and analysis.

    • Main Results:

    • Real-time acquisition and processing of X-ray elemental image maps are feasible.
    • Simultaneous acquisition of element and water content from the same intracellular regions is possible.
    • Computer-aided imaging combined with static probes serves as an interactive tool for biological analysis.

    Conclusions:

    • The developed microchemical microscopy system enhances studies of ionic (elemental) compartmentation.
    • Facilitates investigation of intracellular concentration gradients and cellular responses to stimuli.
    • Enables ultrastructural resolution of fast physiological events and cell-to-cell interactions.