A 3D microtomographic system with stacked fan-beam geometry

Kohlbrenner, Adrian; Hämmerle, Stefan; Laib, Andres; Rüegsegger, P.

doi:10.1016/s0168-9002(99)01045-1

Cited by 6 publications

(3 citation statements)

References 20 publications

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“…compilation of vendors and their systems, a listing that is almost certainly incomplete. Instruments range from single fan beam to stacked fan beam to cone beam systems, [3][4][5][6][7][8][9] and manufacturers' websites should be consulted for specifics of their systems. Commercial lab microCT systems designed for studying specimens with diameters y10 mm can be expected to produce highest resolutions with voxels between 1 and 10 mm in size.…”

Section: Laboratory (Absorption) Microct Systemsmentioning

confidence: 99%

“…Studies in real time involving changes occurring over several minutes (time averaging over times approaching 10 s) will continue to increase. As new generations of undulator sources are commissioned, the author would not be surprised if, in the next decade, data acquisition advances to the point where (512) 3 reconstructions with greater than 8 bit contrast can be obtained for time intervals of 1 s or less. Exactly how to store and process such amounts of data will be a continuing challenge.…”

Section: Speculations On Future Trendsmentioning

confidence: 99%

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Recent advances in X-ray microtomography applied to materials

Stock

2008

International Materials Reviews

447

208

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This review highlights recent advances in X-ray microcomputed tomography (microCT) as applied to materials, specifically advances made since the first materials microCT review appeared in International Materials Reviews. 1 Improvements in instrumentation are covered, and one focus is microCT using phase (as opposed to absorption) contrast. Instead of grouping studies by disciplines, the reviewed reports are organised by type of application, specifically the study of the spatial distribution of phases, of cellular solids (including static and temporally evolving structures, fibrous network solids, mineralised tissues and biomedical applications), of channel structures, of deformation, fatigue and fracture, of processing and of corrosion and environmental interactions. Metrology applications are covered briefly, and several applications where microCT is combined with position resolved X-ray scattering are described in more detail. The accuracy of microCT reconstructions is discussed before data handling challenges are outlined. The review closes with speculations on the future directions of materials microCT.

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Section: Laboratory (Absorption) Microct Systemsmentioning

confidence: 99%

Section: Speculations On Future Trendsmentioning

confidence: 99%

Recent advances in X-ray microtomography applied to materials

Stock

2008

International Materials Reviews

447

208

View full text Add to dashboard Cite

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“…For example, micro-CT is an emerging technique for the nondestructive assessment and analysis of the bone structure 4,5,6,7 . This technique would allow the characterization of the effects of disease processes (osteoporosis) and of therapeutic agents on trabecular bone architecture in human bone and a variety of animal models.…”

Section: Introductionmentioning

confidence: 99%

Experimental micro-CT system for x-ray NDT

et al. 2002

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This work describes the set-up of an experimental system for micro-tomography developed in the framework of a collaboration between the Physics Department of the University of Bologna (Italy) and the Geosphaera Research Center of Moscow (Russia). The main goal of this inspection system is to carry out high-resolution analysis in vitro of biomedical samples † as well as nondestructive testing (NDT) of industrial components.The detection system consists of a 30x15 mm 2 rectangular fiber-optic taper (ratio 2:1) optically coupled to a cooled 12-bits CCD camera (1024x512 pixels). On the entrance window of the taper is deposited a thin layer of Gd 2 O 2 S:Tb phosphor which provides the X-light conversion. The image readout is carried out by means of a commercial frame grabber installed on a personal computer and specific software is used for data acquisition and control of the tomographic process.The object under investigation is arranged on a 3-degrees micro-positioning system (x-y translation and rotation) and irradiated by an X-ray microfocus beam (up to 200 kVp). The sample can be positioned easily along the source-detector axis in order to obtain a large magnification of details of interest.The X-ray detector has been intensively tested in order to determine its performance in terms of MTF, NPS, and DQE. Moreover, preliminary tests have been carried out on several samples in order to evaluate the performance of the micro-CT system.

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Space and Ground-Based Infrastructures

Weems

Zell

2011

Laboratory Science With Space Data

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A 3D microtomographic system with stacked fan-beam geometry

Cited by 6 publications

References 20 publications

Recent advances in X-ray microtomography applied to materials

Recent advances in X-ray microtomography applied to materials

Experimental micro-CT system for x-ray NDT

Space and Ground-Based Infrastructures

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