MicroComputed Tomography

Stock, Stuart R.

doi:10.1201/9780429186745

Cited by 39 publications

(16 citation statements)

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“…A more detailed overview is available by Rack et al [20], as well as a general introduction on how to access synchrotron light sources by J. McCarthy [21]. Synchrotron radiation in combination with microtomography (SR-µCT) has already proven to be excellently suited to study dynamics inside specimens in three-dimensions and with high contrast [22][23][24]. Frequently, this is used to study samples under temperature changes, external mechanical forces or magnetic fields [25].…”

Section: Introductionmentioning

confidence: 99%

“…This article sets its focus on axial load (up to 500 N) and high spatial resolution in the range of a few micrometer or less. Common studies within this parameter space cover deformation and crack propagation in (engineering) materials (e.g., aluminium alloys, fibre-reinforced materials) or bio-and biomedical materials (e.g., micromechanics in bone or insects) [22,23].…”

Section: Introductionmentioning

confidence: 99%

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TomoPress—In Situ Synchrotron-Based Microtomography under Axial Load

et al. 2020

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Computed tomography (CT) with hard X-rays is a mature technique that is in regular use to depict the interior of opaque specimens with spatial resolutions up to the micrometre range (microtomography or µCT). Short acquisition times and sophisticated contrast modes are accessible when synchrotron light sources are combined with microtomography—SR-µCT. Both features render SR-µCT as excellent probe to study delicate samples in situ, for example under mechanical load by deploying corresponding sample environments. The so-called TomoPress is such a device available within the public user programme of tomography beamline ID19 of the European Synchrotron Radiation Facility (ESRF). It allows one to study samples under high axial load (up to 500 N) with high spatial resolution up to the micrometer range. Different gauges are installed to allow online monitoring of the applied force. Constant humidity, temperature and wetting are routinely available as well. The article shall outline basic design principles of the press as well as parameters for its utilisation in a descriptive manner. Selected examples underline the potential of the device for such diverse fields as biomedical research, life sciences and materials research.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

TomoPress—In Situ Synchrotron-Based Microtomography under Axial Load

et al. 2020

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“…Second, a flat-field correction was applied. Instead of a conventional (static) flat-fielding procedure (Stock 2008a), where each projection is divided by a mean/median flatfield image, a (dynamic) flat-field correction based on the principal component analysis was used (Van Nieuwenhove et al 2015). The reason for that was a known variability of the illumination field, most probably originating from the observed vibrations of the monochromator, which becomes prominent only at short acquisitions (Ruhlandt et al 2017).…”

Section: Tomographic Reconstructionmentioning

confidence: 99%

“…The static flat-fielding procedure by its definition relies on the stationary beam and is not designed to catch such variations. In the reconstruction process, beam fluctuations are known to contribute to a so-called fixed pattern noise and introduce ring and band artefacts (Stock 2008a;Van Nieuwenhove et al 2015). With the dynamic approach, the ring artefacts were significantly reduced.…”

Section: Tomographic Reconstructionmentioning

confidence: 99%

“…In the field of X-ray tomographic imaging, third-generation synchrotron X-ray sources have established themselves as invaluable experimental facilities to obtain the threedimensional (3D) information on internal structure with unprecedented spatial and temporal resolutions (Eriksson et al 2014;Stock 2008a). The possibility to generate 3D density maps of small samples down to micrometer resolution (Flannery et al 1987) together with the access to different contrast mechanisms (absorption, phase, scattering) has led to a number of different available phase-contrast imaging (PCI) techniques (Bravin et al 2013;Nugent 2010;Wilkins et al 2014) and hence enabled the study of structural properties of a wide range of materials on different length and time scales, from millimeters down to tens of nanometers (Villanova et al 2017).…”

Section: Introductionmentioning

confidence: 99%

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Micrometer-resolution X-ray tomographic full-volume reconstruction of an intact post-mortem juvenile rat lung

Borisova

Lovrić

Miettinen

et al. 2020

Histochem Cell Biol

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In this article, we present an X-ray tomographic imaging method that is well suited for pulmonary disease studies in animal models to resolve the full pathway from gas intake to gas exchange. Current state-of-the-art synchrotron-based tomographic phase-contrast imaging methods allow for three-dimensional microscopic imaging data to be acquired non-destructively in scan times of the order of seconds with good soft tissue contrast. However, when studying multi-scale hierarchically structured objects, such as the mammalian lung, the overall sample size typically exceeds the field of view illuminated by the X-rays in a single scan and the necessity for achieving a high spatial resolution conflicts with the need to image the whole sample. Several image stitching and calibration techniques to achieve extended high-resolution fields of view have been reported, but those approaches tend to fail when imaging non-stable samples, thus precluding tomographic measurements of large biological samples, which are prone to degradation and motion during extended scan times. In this work, we demonstrate a full-volume three-dimensional reconstruction of an intact rat lung under immediate post-mortem conditions and at an isotropic voxel size of (2.75 µm) 3. We present the methodology for collecting multiple local tomographies with 360° extended field of view scans followed by locally non-rigid volumetric stitching. Applied to the lung, it allows to resolve the entire pulmonary structure from the trachea down to the parenchyma in a single dataset. The complete dataset is available online (

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X‐Ray Microscopy: A Non‐Destructive Multi‐Scale Imaging to Study the Inner Workings of Batteries

et al. 2023

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X-ray microscopy (XRM) is a non-destructive characterization technique that provides quantitative information regarding the morphology/composition of the specimen and allows to perform multiscale and multimodal 2D/3D experiments exploiting the radiation-matter interactions. XRM is particularly suitable to afford in situ images of inner parts of a battery and for the early diagnosis of its degradation in a non-invasive way. Since traditional characterization techniques (SEM, AFM, XRD) often require the removal of a component from the encapsu-lated device that may lead to non-desired contamination of the sample, the non-destructive multi-scale potential of XRM represents an important improvement to batteries investigation. In this work, we present the advanced technical features that characterize a sub-micron X-ray microscopy system, its use for the investigation of hidden and internal structures of different types of batteries and to understand their behavior and evolution after many charge/discharge cycles.

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MicroComputed Tomography

Cited by 39 publications

References 0 publications

TomoPress—In Situ Synchrotron-Based Microtomography under Axial Load

TomoPress—In Situ Synchrotron-Based Microtomography under Axial Load

Micrometer-resolution X-ray tomographic full-volume reconstruction of an intact post-mortem juvenile rat lung

X‐Ray Microscopy: A Non‐Destructive Multi‐Scale Imaging to Study the Inner Workings of Batteries

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