Roche I Morgo, O;
Vittoria, F;
Endrizzi, M;
Olivo, A;
Hagen, C;
(2020)
Three different ways of implementing cycloidal computed tomography: a discussion of pros and cons.
In:
Proceedings of the 6th International Conference on Image Formation in X-Ray Computed Tomography.
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Abstract
We present three implementation strategies for cycloidal computed tomography. The latter refers to an imaging concept that enables the acquisition of highresolution tomograms in a flexible manner (e.g. with x-ray sources with a relatively large focal spot and detectors with relatively large pixels). In cycloidal computed tomography, the sample is rotated and laterally translated simultaneously; with this scheme, each sample feature follows a cycloidal trajectory. This has been shown to reduce scanning time and delivered dose, while maintaining a high resolution. The different ways of implementing this method are: step-and-shoot, continuous unidirectional and continuous back-and-forth translation. While step-andshoot acquisitions yields the best results and are easiest to implement, they are also the most time-consuming. The continuous unidirectional method can be implemented with little effort and gives results comparable to step-and-shoot. Finally, back-and-forth scans can be implemented easily and provide similar results, although there appears to be a small loss in image quality. We present a comprehensive guide on using cycloidal sampling in practice.
| Type: | Proceedings paper |
|---|---|
| Title: | Three different ways of implementing cycloidal computed tomography: a discussion of pros and cons |
| Event: | 6th International Conference on Image Formation in X-Ray Computed Tomography |
| Location: | Regensburg, Germany |
| Dates: | 3rd-7th August 2020 |
| Open access status: | An open access version is available from UCL Discovery |
| Publisher version: | https://www.ct-meeting.org/ |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions. |
| Keywords: | computed tomography, sampling, spatial resolution, structured illumination, x-rays |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Med Phys and Biomedical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10115882 |
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