CT Calibration
CactuX CT Calibration solutions ensure accurate and reliable industrial CT scanning. Our calibration Phantoms characterize CT scanners and correct the motion inaccuracies.
CT Calibration Phantoms series
Choose according to your application.
CT Calibration – Spirit series
Voxel-Spirit
Certified phantom for nanoCT measurement that allows quick and intuitive voxel size calibration. Voxel-spirit suits even strict Field of View (FOV) limits and high precision requirements.
Parameters
- 0.06 µm calibration precision
- Reduction of calibration time
- <1 µm voxel size CT applications
- Quick and easy use
Package
Standard Package |
| Voxel-spirit |
| Phantom holder |
| Calibration procedure description |
| Distance measurement certificate |
The device and its equipment are delivered in packaging designed for safe transport and storage.
Datasheet
Resolution-Spirit
Set of universal CT phantoms suitable for both nanoCT and microCT systems that allows for precise spatial resolution estimation according to ASTM E1695-95 standard. Resolution-spirit suits variable Field of View (FOV) limits and high precision requirements.
Parameters
- 4 size options
- < 1 µm to > 10 µm voxel size CT applications
- Accordance to ASTM E1695-95 standard
- Quick and easy use
Package
Standard Package |
| Resolution-spirit (set of 4 CT Phantoms) |
| Manual |
| Spatial resolution estimation methodology |
The device and its equipment are delivered in packaging designed for safe transport and storage.
Datasheet
CT Calibration – Shadow series
R1-Shadow
Sample’s holder with fiducial marker for both nanoCT and microCT measurements that allows for quick and intuitive correction of rotational stage inaccuracies and CT data registration for applications such as Dual-Energy CT or 4D CT. R1-Shadow is a multi-purpose solution that suits variable Field of View (FOV) limits and high precision requirements.
Parameters
- 4 size options
- Quick and easy use
- < 1 pixel precision of data registration
- Data quality and precision enhancement
Package
Standard Package |
| R1-Shadow (3 pc., 5 pc., 10 pc.) |
| Manual |
| Correction and registration methodology |
| ImageJ plugin |
The device and its equipment are delivered in packaging designed for safe transport and storage.
Datasheet
CT Calibration Phantoms in action
How to Verify Accuracy in CT Dimensional Analysis (Rigaku Blog, Angela Criswell & Jakub Šalplachta – CactuX) establishes a rigorous methodology for dimensional and grayscale calibration to ensure the metrological traceability of computed tomography data.
3D resolution in microCT: a comparison study on visual resolution versus MTF measurement (Valton, S., Lietaert, E., & Moyau, P. (2025). e-Journal of Nondestructive Testing Vol. 30(8)) evaluates the correlation between visual resolution assessments and objective Modulation Transfer Function (MTF) measurements to refine 3D image quality characterization in industrial microCT.
Scale correction in submicron computed tomography with a submillimeter field of view (Zemek, M., Blažek, P., Šalplachta, J., et al. (2025) Tomography of Materials and Structures, Vol. 7.) presents advanced scale correction techniques for submicron CT imaging to mitigate measurement errors within restricted submillimeter fields of view.
Voxel Size Calibration for High-resolution CT (Zemek, M., Blažek, P., Šrámek, J., et al. (2020). The e-Journal of Nondestructive Testing, Wels) defines essential calibration protocols for precise voxel size determination, forming the fundamental prerequisite for quantitative high-resolution dimensional analysis.
3D Spatial Resolution Evaluation for Helical CT According to ASTM E1695–95 (Lázňovský, J., Břínek, A., Šalplachta, J., et al. (2020). e-Journal of Nondestructive Testing) provides a standardized framework for evaluating 3D spatial resolution in helical CT scanning in strict accordance with the ASTM E1695–95 international industrial standard.
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