Industrial X-ray CT scanner.

The effect of focal spot size on the spatial resolution of variable resolution X-ray CT scanner

Background: A variable resolution X-ray (VRX) CT scanner provides a great increase in the spatial resolution. In VRX CT scanners, the spatial resolution of the system and its field of view (FOV) can be changed according to the object size. One of the main factors that limit the spatial resolution of VRX CT scanner is the effect of the X-ray focal spot. Materials and Methods: A theoreti...

the effect of focal spot size on the spatial resolution of variable resolution x-ray ct scanner

background: a variable resolution x-ray (vrx) ct scanner provides a great increase in the spatial resolution. in vrx ct scanners, the spatial resolution of the system and its field of view (fov) can be changed according to the object size. one of the main factors that limit the spatial resolution of vrx ct scanner is the effect of the x-ray focal spot. materials and methods: a theoretical study...

Experimental results from a preclinical X-ray phase-contrast CT scanner.

To explore the future clinical potential of improved soft-tissue visibility with grating-based X-ray phase contrast (PC), we have developed a first preclinical computed tomography (CT) scanner featuring a rotating gantry. The main challenge in the transition from previous bench-top systems to a preclinical scanner are phase artifacts that are caused by minimal changes in the grating alignment d...

Artifacts in X-ray CT

Adaptive CT scanning—mesh based optimisation methods for industrial X-ray computed tomography applications

We present new methods to optimise industrial computed tomography (CT) scanning process. The methods were applied on CT systems— with high-energy X-ray tube sources (.400 keV)—using cross-sectional images for volume digitalisation. Commonly the distances between all cross-sectional slices for volume data acquiring are constant. We developed a new adaptive CT scanning method, which optimises the...