4D CT

What is 4D CT?

4D CT is a 3D scanning technique that captures either the spatial or temporal changes of an object. Unlike conventional 3D CT scans, which only show the shape and structure of an object at a fixed point in time, 4D CT scans can show how an object changes over time. This is achieved by taking multiple 3D CT scans at different time intervals and combining them into a single 4D image image representation. 

4D CT process

Data acquisition: Data acquisition: A series of 2D digital radiographs is acquired at different angles in relation to a x–ray generator and detector. The positions of the images are known to a high degree of accuracy thanks to the high precision mechanics of our CT Scanners.

Data acquisition: A series of 2D digital radiographs is acquired at different angles in relation to an x–ray generator and detector. The positions of the images are known to a high degree of accuracy thanks to the high precision mechanics of our CT Scanners. The data acquisition can be performed in a continuous or gated mode, the method of acquisition is usually driven by the requirement of the study.  This process is repeated for each time or spatial point. 

Image analysis: The 3D CT images are then analysed in advanced software. Depending on the complexity of the study, a simple visualisation may be all that is required, however, it is possible to run formal analytical analysis on samples providing maximum information. The final results are usually presented in both a visual and tabulated way. Animations of the study can be produced to give a broader understanding of what was undertaken, and the results are under pinned with analytical information.