Fei Comapny

Petr Strelec

Andrew M Kingston

Adrian Paul Sheppard

Trond Karsten Varslot

Shane Jamie Latham

Glenn Robert Myers

Ondrej Ludmil Shanel

Olaf Delgado-Friedrichs

Methods and apparatuses are disclosed herein to correct for inconsistencies in CT scans based on pi-lines. An example method at least includes acquiring a plurality of projections of a sample, each projection of the plurality of projections acquired at a different location around the sample based on a trajectory, determining pairs of opposing projections from the plurality of projections based on a respective pi-line, and determining an amount of inconsistency between respective pi-line data for each pair of opposing projections, where the pi-line data is based, at least in part, on attenuation data.

Geometric alignment, sample motion correction, and intensity normalization of computed tomography projections using pi-line optimization

A method, target, and apparatus are disclosed for investigating a specimen using X-ray tomography. The specimen in mounted on a specimen holder. An X-ray target has a substrate of relatively low-atomic-number material carrying an array of mutually isolated nuggets of a relatively high-atomic number material. X-rays are generated by irradiating a single nugget in the target with a charged particle beam, which then illuminates the specimen along a first line of sight through the specimen. A flux of X-rays transmitted through the specimen is detected to form a first image. The illumination process is repeated for a series of different lines of sight through the specimen, to produce a series of images. A mathematical reconstruction on the series of images is then performed to produce a tomogram of at least part of the specimen.

Innovative X-ray source for use in tomographic imaging

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Brno, Czechia

Petr Strelec