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3D Imaging of Soft-Tissue Samples using an X-ray Specific Staining Method and Nanoscopic Computed Tomography
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Depth-Variant Deconvolution Applied to Widefield Microscopy for Rapid Large-Volume Tissue Imaging.

Daniel Lee1, Kevin Telfer1, Mark Koenis2

  • 1Department of Pathology & Immunology, Washington University School of Medicine, Saint Louis, MO, USA.

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|June 12, 2025
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Summary

This study introduces a fast, accessible 3D tissue imaging method using widefield microscopy and deconvolution. It achieves subnuclear resolution in thick tissues, enabling detailed pathological evaluation and research insights.

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Area of Science:

  • Biomedical Imaging
  • Microscopy
  • Pathology

Background:

  • 3D tissue imaging is crucial but limited by protocol length and equipment access.
  • Widefield microscopy offers speed and accessibility but lacks optical sectioning for 3D workflows.

Purpose of the Study:

  • To develop an accessible 3D widefield microscopy method with subnuclear axial resolution.
  • To overcome limitations of traditional 3D imaging techniques.

Main Methods:

  • Combined tissue clearing with depth-variant deconvolution for large-volume widefield imaging.
  • Applied the method to ileitis, cerebral amyloid angiopathy, and human kidney biopsies.

Main Results:

  • Achieved subnuclear axial resolution up to 500 µm depth.
  • Resolved amyloid deposits in brain vasculature, comparable to confocal microscopy.
  • Enabled rapid 3D visualization of kidney biopsy microvasculature for pathological evaluation.

Conclusions:

  • Widefield microscopy with deconvolution provides an accessible and viable method for 3D tissue imaging.
  • This approach enhances research and clinical pathological evaluations.
  • Facilitates rapid assessment of tissue structures in thick sections.