A time-lapse video produced from a series of micro-CT snapshots will then reveal the changing properties of the sample, with a temporal resolution defined as the duration of the experiment, divided by the number of snapshots incorporated in the time-lapse video.įigure 1. If the rate of change of the sample is sufficiently slow, 4D experiments could even tolerate samples taken in and out of the micro-CT if the system does not cater to highly complex in-situ setups (for example experiments conducted inside the micro-CT system). In the case of micro-CT, all that is required for this kind of 4D data acquisition is to capture a full 360° scan at a sufficiently fast scanning rate to obtain the state of the material at regular time intervals, Figure 1. The structural models reconstructed from each set are then displayed in sequence, yielding an accelerated recording of the changes.ĤD data acquisition can be considered as a form of stroboscopic imaging, whereby a dynamic process is captured by a discrete number of snapshots - ideally at regular time intervals during the duration of the experiment. Most 4D data acquisition can be compared to a time-lapse recording, where sets of 2D images, each set acquired over a single rotation, are separated in time during which data are not acquired. Time resolved micro-CT has been referred to as 4D CT, a reference to time as the fourth dimension in addition to the three physical dimension: length, width and depth. Processes that produce significant changes over a shorter period will not be well resolved because they are simply faster than the time resolution of the experiment. That time can vary greatly - depending on analysis requirements and instrument capabilities - but is usually on the order of minutes or even hours. Ultimately, the time resolution is limited by the time it takes to finish a complete rotation. Either the sample or the source and detector rotate through 360° to acquire the image set. It is worth taking a closer look at micro-CT in the context of time-resolved recordings of dynamic processes and the shift it enables from looking at material characteristics to material behaviors.Īll CT techniques combine a set of 2D projections acquired from multiple perspectives around the sample to create a 3D model. The ability to watch the effects of environmental influences on materials and structures is not a new technique, but recent developments really enhance its value. Dynamic micro-CT, which acquires data continuously, is a significant evolution in micro-CT technology, enabling scientists to capture data from unpredictable events that may be missed with conventional time-lapse techniques. New developments in time-resolved micro-CT allow researchers to study material behaviors in situ as the materials respond dynamically to environmental influences. Wesley De Boever, Product Marketing Manager, TESCAN CT acquisition, 3D reconstruction and image processing can entirely be performed by X-Act.By Dr. The software, entirely developed by RX Solutions is an innovative and customer friendly solution to control our X-ray equipment. The innovative RX Solutions X-Act software runs in any system and allows easy and intuitive CT settings. Every CT system from RX Solutions has been developed for applications in various industrial fields : research & development, process monitoring, quality controls, defect analysis or CT metrology. In-House CT Acquisition and Reconstruction Software Programmable automatic calibration and stabilisationĮasy and intuitive 3D optimization of the sample reconstruction volumeĪutomated wizard enabling non expert users to run CT scansĬT Scan Wizard with a highly intelligent, simple to use interface allowing fast and easy setup of the parameters for a high resolution, fast scan to the user needs Large variety of acquisition modes: conventional, helical, laminography, shift and stack modes Unequalled system size versus scannable volume ratio Innovative design that minimizes system downtime and required maintenanceĪutomated scanning reconstruction and inspection workflow for production batch Highly flexible X-Ray CT system : large scanning volume in a small footprint easily fitted into a lab or office roomĪchieve high resolution scans within the shortest time (6s): reduces the time to market and enhances the quality of your components Compact and highly versatile X-Ray Micro CT System
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