Quantitative x-ray microtomography with a conventional source

Davis, Graham; Evershed, Anthony N. Z.; Elliott, J. C.; Mills, David

doi:10.1117/12.861355

Cited by 14 publications

(15 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At the same time, we emphasize that typical artefacts stemming from polychromatic light, such as streaks, dark bands, cupping, or flare artefacts [26][27][28], have been largely removed through the use of an aluminium filter with a thickness of 0.1 mm and Scanco's in-built beam hardening correction. This may lead to grey values of a quality ''close to that'' of synchrotron CT. Actually, the ability of polychromatic systems to deliver results with a significant quantitative meaning has been explicitly shown in the context of bone density measurements, with errors not exceeding 10% [29][30][31]. Interestingly, this is fully consistent with the results of Table 5.…”

Section: Results Of Microporosity Determinationsupporting

confidence: 83%

Micro-CT-based identification of double porosity in fired clay ceramics

et al. 2018

View full text Add to dashboard Cite

Optimizing thermal and mechanical properties of clay block masonry requires detailed knowledge on the microstructure of fired clays. We here identify the macro-and microporosity stemming from the use of three different poreforming agents (expanded polystyrene, sawdust, and paper sludge) in different concentrations. Micro-CT measurements provided access to volume, shape, and orientation of macropores, and in combination with X-ray attenuation averaging and statistical analysis, also to voxel-specific microporosities. Finally, the sum of micro-and macroporosity was compared to corresponding data gained from two statistically and physically independent methods (namely from chemical analysis in combination with weighing, and from mercury intrusion porosimetry). Satisfactory agreement of all these independently gained experimental data renders our new concept for identifying the pore spaces of fired clay as a very promising tool supporting the further optimization of clay blocks.

show abstract

Section: Results Of Microporosity Determinationsupporting

confidence: 83%

Micro-CT-based identification of double porosity in fired clay ceramics

et al. 2018

View full text Add to dashboard Cite

show abstract

“…mCT is based on the principle of X-ray attenuation by matter (Duliu, 1999;Mees et al, 2003;Carlson, 2006;Davis et al, 2010), the level of which closely corresponds to the density and composition (effective atomic number) of the scanned material(s) (Orsi et al, 1994;Denison et al, 1997;Orsi and Anderson, 1999;Ketcham and Carlson, 2001;Van Geet et al, 2001;Schreuers et al, 2003;Carlson, 2006). During scanning and reconstruction, a stack of z slices is generated through tomographic back-projection based on a large number of X-ray radiograms.…”

Section: Introductionmentioning

confidence: 99%

A comparison of micro-CT and thin section analysis of Lateglacial glaciolacustrine varves from Glen Roy, Scotland

Bendle

Palmer

Carr

2015

Quaternary Science Reviews

View full text Add to dashboard Cite

“…These studies have used a variety of methods to define and measure the surface layer but have not related these parameters to clinical assessments of lesion activity. Hence, the aim of the current study was to characterize the relationship between the clinical activity and mineral content depth profiles of WSEL in extracted teeth by means of a MuCAT2 x-ray microtomography system (Davis et al ., 2010).…”

Section: Introductionmentioning

confidence: 99%

An X-ray Microtomographic Study of Natural White-spot Enamel Lesions

et al. 2011

View full text Add to dashboard Cite

White-spot enamel lesions are an early presentation of dental caries and are ideally managed by non-invasive procedures. The aim of this study was to characterize white-spot enamel lesions by x-ray microtomography. In particular, mineral content across the lesion from the surface to the base of the lesion was measured and surface layers defined. Molars with long buccal white-spot enamel lesions were collected, photographed, and each sectioned to produce 3 500-µm-thick sections. The sections were mounted and imaged by quantitative x-ray microtomography at a 15-µm voxel size. We analyzed line profiles through the middle of each 3D image to determine mineral content and depth. The surface layer thickness of the lesions ranged from 35 to 130 µm, with the maximum mineral content in this layer being 74% to 100% of that of sound enamel. The average mineral content across the lesions ranged from 1.73 to 2.48 g/cm(3). No significant differences could be found between lesions clinically categorized as active and those categorized as inactive. However, for depth-matched active and inactive lesions, the active lesions exhibited a more porous surface layer than the inactive lesions. White-spot enamel lesions are highly variable, with surface layers of considerable thickness.

show abstract

Quantitative x-ray microtomography with a conventional source

Cited by 14 publications

References 0 publications

Micro-CT-based identification of double porosity in fired clay ceramics

Micro-CT-based identification of double porosity in fired clay ceramics

A comparison of micro-CT and thin section analysis of Lateglacial glaciolacustrine varves from Glen Roy, Scotland

An X-ray Microtomographic Study of Natural White-spot Enamel Lesions

Contact Info

Product

Resources

About