CT Quality Inspector (CTQI)

GUI based software for quality assurance of computed tomography (CT) scanners. Perform QA analyses on Catphan or water phantom images.

Version 1.7.0 (7.32 MB)
320 Downloads
(1)
12 Feb 2025

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Computed Tomography Quality Inspector (CTQI) is a program that measures several parameters of CT scanner performance by the semi-automated analysis of Catphan 500 or water phantom images. CTQI has applications in CT scanner quality assurance, scan protocol optimisation, and imaging research.
Requirements: Requires the MATLAB Image Processing Toolbox.
Instructions: Extract the .zip contents and set the present working folder (path) to the folder containing CTQI.m. Run the CTQI.m function to launch.
Acknowledgements: Department of Medical Technology & Physics, Sir Charles Gairdner Hospital, Perth, Western Australia.
Disclaimer: The software is currently in draft format and has not been thoroughly tested. It is intended for research purposes only. Expect significant improvements and fixes to follow. No warranty is included with this program. We take no responsibility for the accuracy of data obtained with the software.

Cite As

Rik Nezich (2026). CT Quality Inspector (CTQI) (https://se.mathworks.com/matlabcentral/fileexchange/73245-ct-quality-inspector-ctqi), MATLAB Central File Exchange. Retrieved .

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General Information

MATLAB Release Compatibility

  • Compatible with any release

Platform Compatibility

  • Windows
  • macOS
  • Linux
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Version Published Release Notes
1.7.0

The region of interest in the resolution module is now moveable and can be dragged around the image or have the central pixel coordinates specified.
Tested compatibility is now R2024b.
1.6.0

Changes to user interface, improvements to integral non-uniformity measurement, addition of numerical MTF calculation.
1.5.0

v1.5.0
- Added analysis for geometric accuracy
- Changes to page navigation
1.4.0

- Changes to library page
- Add the ability to load an entire directory with sub-folders
- Removed Linearity test list
- Minor changes and bug fixes
1.3.4

- Fixed figure scaling problem on remaining pages
- Made GUI page sizes consistent
- Fixed a few bugs
- Superficial GUI changes
- Removed local test criteria from test pages
1.3.3

- Added code comments
- Fixed figure scaling problem on Library page
1.3.1