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SlicesMapi: An Interactive Three-Dimensional Registration Method for Serial Histological Brain Slices.

Zoutao Zhang1, Lingyi Cai1, Wenwei Li1

  • 1Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, MoE Key Laboratory for Biomedical Photonics, Huazhong University of Science and Technology, Wuhan, 430074, China.

Neuroinformatics
|April 16, 2025
PubMed
Summary

Accurately mapping 2D brain slices to 3D brain atlases is crucial for neuroscience. SlicesMapi offers precise 3D registration of brain slice sequences, overcoming limitations of current methods for spatial localization.

Keywords:
2D- 3D registrationBrain slice imagesHistological imageSpatial localizationSpatial transcriptomic data

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Area of Science:

  • Neuroscience
  • Medical Imaging
  • Computational Biology

Background:

  • Brain slice imaging is vital for studying neuronal structures and circuits.
  • Accurate registration of 2D slices to 3D brain atlases is essential for spatial analysis.
  • Existing registration methods face challenges in accuracy, speed, and applicability.

Purpose of the Study:

  • To introduce SlicesMapi, an interactive 3D registration method for brain slice sequences.
  • To address limitations in accuracy, computational throughput, and applicability of current registration techniques.
  • To enable precise spatial localization of brain slices within a 3D reference atlas.

Main Methods:

  • SlicesMapi employs dual constraints from neighboring and reference atlas slices.
  • It corrects linear and non-linear deformations in 3D and 2D spaces.
  • The method registers images at full resolution, avoiding down-sampling information loss.

Main Results:

  • Achieved Dice scores of 0.9 in major brain regions.
  • Demonstrated superior accuracy and robustness compared to existing methods.
  • Successfully handled challenges like unknown slice angles and non-linear deformations.

Conclusions:

  • SlicesMapi provides a more accurate, robust, and efficient spatial localization scheme for brain slices.
  • The method enhances precision in spatial positioning of slice images.
  • It offers significant advantages for brain science research requiring detailed spatial mapping.