HelTomo - Helsinki Tomography Toolbox

Version 2.2.0 (51.6 KB) by Alexander Meaney
Functions for working with X-ray data measured in the Industrial Mathematics Computed Tomography Laboratory at the University of Helsinki.
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Updated 27 Jun 2025

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HelTomo is a MATLAB toolbox that has been primarily created for working with X-ray Computed Tomography (CT) data measured in the Industrial Mathematics Computed Tomography Laboratory at the University of Helsinki. Its purpose is facilitate a fast and easy workflow from raw projection data to reconstructions, allowing researchers to test their CT algorithms on real, measured X-ray data.
Full use of the toolbox requires that the ASTRA Tomography Toolbox (https://www.astra-toolbox.com/) and the Spot Linear-Operator Toolbox (https://www.cs.ubc.ca/labs/scl/spot/) have been added to the MATLAB path. Many functions also require that the computer is equipped with a CUDA-enabled GPU. Computing CT reconstructions is a heavy task, and use of a GPU-based workstation is strongly recommended.
The HelTomo toolbox has been created by Alexander Meaney while working at the Department of Mathematics and Statistics at the University of Helsinki.

Cite As

Alexander Meaney (2026). HelTomo - Helsinki Tomography Toolbox (https://se.mathworks.com/matlabcentral/fileexchange/74417-heltomo-helsinki-tomography-toolbox), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2023b
Compatible with R2018b to R2023b
Platform Compatibility
Windows macOS Linux
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heltomo-2.2.0

Version Published Release Notes
2.2.0

Added functions for iterative total variation -regularized reconstruction in 2D and 3D.
2.1.1

Minor updates to syntax, increased compatibility with different datasets.
2.1.0

Updated compatibility with PCD-CT data. Some function names condensed.
2.0.0

Fully updated version 2.0.0 for 2022.
1.0.5

Metadata input syntax updated.
1.0.4

3D cone beam projector added, some documentation updated.
1.0.3

3D cone-beam FDK reconstruction added.
1.0.2

Projector and FBP functions added, some functions updated.
1.0.1

Projector and FBP reconstruction functions added, some functions updated.
1.0.0