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Updated: Jun 26, 2025

Sample Drift Correction Following 4D Confocal Time-lapse Imaging
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    This study introduces a new 3D drift correction method for single-molecule localization microscopy (SMLM) using reflected and scattered light. The technique improves image quality by stabilizing samples during long acquisitions, outperforming existing methods for sparse data.

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    Area of Science:

    • Biophysics
    • Microscopy
    • Optical Imaging

    Background:

    • Single-molecule localization microscopy (SMLM) provides nanoscale 3D super-resolution imaging of biological structures.
    • Extended imaging times in SMLM can cause sample-imaging system drift, leading to artifacts in reconstructed images.

    Purpose of the Study:

    • To develop and present a novel 3D drift correction method for SMLM.
    • To enhance the quality and reliability of super-resolution images obtained from biological samples.

    Main Methods:

    • A new 3D drift correction technique utilizing reflected and scattered light from the sample.
    • Employing near-infrared (NIR) laser reflected light for axial focus stabilization.
    • Synchronously capturing speckle images for lateral drift estimation.
    • Combining active axial compensation with post-processing lateral compensation using a single laser.

    Main Results:

    • Achieved robust 3D drift correction for SMLM.
    • Demonstrated superior performance compared to localization events-based cross-correlation methods.
    • Showcased effectiveness, particularly for datasets with sparse localization points.

    Conclusions:

    • The presented method offers a robust and efficient solution for 3D drift correction in SMLM.
    • This technique enhances image fidelity in super-resolution microscopy, especially under challenging imaging conditions.
    • The single-laser approach simplifies the experimental setup while maintaining high correction accuracy.