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Related Experiment Video

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Cryo-Electron Tomography Remote Data Collection and Subtomogram Averaging

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Published on: July 12, 2022

Suppression of ring artefacts when tomographing anisotropically attenuating samples.

Sofya Titarenko¹, Valeriy Titarenko, Albrecht Kyrieleis

¹Department of Mathematics, Faculty of Physics, Moscow State University, Leninskie Gory, Moscow 119991, Russia. valeriy.titarenko@manchester.ac.uk

Journal of Synchrotron Radiation

|April 29, 2011

Summary

This study introduces a new method to suppress ring artifacts in computerized X-ray tomography (CXT) for rotating samples. The technique uses an analytical formula for rapid correction, improving image quality in various CXT geometries.

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Area of Science:

Medical Imaging
Materials Science
Computational Science

Background:

Computerized X-ray tomography (CXT) is susceptible to ring artifacts caused by sample rotation.
These artifacts degrade the quality of tomographic reconstructions, especially for objects with varying attenuation.
Existing methods may not be universally applicable or efficient.

Purpose of the Study:

To present a novel, rapid method for suppressing ring artifacts in CXT.
To ensure the method's applicability to both parallel and cone-beam CXT geometries.
To validate the technique's effectiveness on diverse sample types.

Main Methods:

Development of an analytical formula for artifact correction.
Implementation of the correction via matrix-vector multiplication.
Testing the method on paleontological and composite material samples.

Main Results:

Successful suppression of ring artifacts was demonstrated.
The method proved effective for both parallel and cone-beam CXT.
High-quality tomographic reconstructions were achieved for complex samples.

Conclusions:

The proposed method offers an efficient and effective solution for ring artifact reduction in CXT.
This technique enhances the reliability of CXT for analyzing rotating or heterogeneous samples.
The approach is versatile and applicable across different CXT setups and sample types.