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Updated: Dec 7, 2025

Single-Particle Cryo-EM Data Collection with Stage Tilt using Leginon
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Single-shot ptychography with highly tilted illuminations.

Chengcheng Chang, Xingchen Pan, Hua Tao

    Optics Express
    |September 29, 2020
    PubMed
    Summary
    This summary is machine-generated.

    A novel single-shot ptychographic iterative engine (PIE) enables accurate phase retrieval. This method uses highly tilted illumination and non-paraxial reconstruction for faster, higher-quality imaging.

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    Area of Science:

    • Optics and Photonics
    • Computational Imaging
    • Materials Science

    Background:

    • Ptychographic iterative engine (PIE) methods typically require multiple frames for phase retrieval.
    • Paraxial approximations in reconstruction algorithms can limit accuracy and resolution.

    Purpose of the Study:

    • To develop a single-shot PIE method for accurate phase retrieval.
    • To improve data acquisition speed and reconstruction quality in ptychography.

    Main Methods:

    • Utilizing highly tilted illumination to generate multiple, non-overlapping sub-diffraction patterns in a single frame.
    • Developing and applying a non-paraxial reconstruction algorithm for numerical propagation of tilted beams.

    Main Results:

    • Achieved accurate phase retrieval from a single frame.
    • Demonstrated faster data acquisition compared to traditional multi-shot methods.
    • Obtained higher reconstruction quality by mitigating paraxial approximation errors.

    Conclusions:

    • The proposed single-shot PIE with tilted illumination offers a significant advancement in phase retrieval.
    • This technique enhances imaging speed and accuracy, particularly for applications requiring rapid or high-resolution imaging.