STEMPO -- dynamic X-ray tomography phantom

TL;DR

STEMPO is a comprehensive dynamic X-ray tomography phantom with datasets, ground truth, and example codes, designed to facilitate testing and validation of reconstruction algorithms in 2D and 3D.

Contribution

It introduces a versatile phantom with dynamic measurements, ground truth, and resources for algorithm testing in the field of dynamic X-ray tomography.

Findings

Provides open access to diverse dynamic tomography datasets.

Includes ground truth data for validation purposes.

Offers example codes for algorithm testing and validation.

Abstract

This is the documentation for Spatio-TEmporal Motor-POwered (STEMPO) phantom for dynamic X-ray tomography. Provided are different measurements designed for testing dynamic tomography reconstruction algorithms. The measured data and additional materials are available at www.fips.fi/dataset.php and doi.org/10.5281/zenodo.7081688 for open use by the scientific community, as long as the data and this documentation are appropriately referenced. The files contain: (1) measurement data (sinograms) from one static scan and two dynamic scans (same movement but different choice of projection directions). All data is provided both for 2D and 3D geometry in varying resolution levels; (2) approximation of the ground truth obtained using the known motion model; and (3) short example codes to showcase how the data could be used to test and validate dynamic tomography algorithms.