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Updated: May 20, 2026
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Near Simultaneous Laser Scanning Confocal and Atomic Force Microscopy (Conpokal) on Live Cells
Published on: August 11, 2020
Swept field laser confocal microscopy for enhanced spatial and temporal resolution in live-cell imaging
Manuel Castellano-Muñoz1, Anthony Wei Peng, Felipe T Salles
1Department of Otolaryngology, Stanford University, 300 Pasteur Drive, Edwards R145, Stanford, CA 94305, USA.
Summary
Swept field confocal (SFC) microscopy images live cells at high speeds, balancing image quality with temporal resolution. This advanced technique achieves over 1,000 frames per second for detailed, rapid biological imaging.
Area of Science:
- Biophysics
- Cell Biology
- Microscopy
Background:
- Confocal fluorescence microscopy improves image quality by rejecting out-of-focus light.
- Traditional confocal microscopy prioritizes resolution, often for fixed samples.
- Live-cell imaging demands higher sampling rates, balancing image quality, temporal resolution, and cell viability.
Purpose of the Study:
- To introduce swept field confocal (SFC) microscopy as a method for high-speed live-cell imaging.
- To highlight SFC microscopy's ability to maintain confocality and high spatial resolution.
- To demonstrate SFC microscopy's potential for capturing rapid biological processes.
Main Methods:
- Utilizing a swept field confocal microscope with a pinhole array for spatial resolution.
- Employing a slit-scanning mechanism to rapidly acquire images across the entire plane.
- Coupling the system with a high-speed CCD camera and laser illumination.
Main Results:
- SFC microscopy achieves high-speed imaging of live cells.
- The technique maintains confocality, similar to spinning disc confocal systems.
- Images can be acquired at rates exceeding 1,000 frames per second.
Conclusions:
- Swept field confocal microscopy offers a solution for high-speed, high-resolution live-cell imaging.
- SFC microscopy provides a balance between image quality, temporal resolution, and sample viability.
- This method is suitable for studying fast biological dynamics in living cells.
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