Publication

Real-time radiology in the microscale

Giorgio Margaritondo
2005
Journal Articles

Résumé

We present several examples of the applications of a novel microradiology approach based on unmonochromatized synchrotron x-rays. The approach - mostly implemented on the ICPCIR (International Consortium on Phase Contrast Imaging and Radiology) Beamline at the 7B2 Pohang Light Source in Korea, Phase Contrast Imaging (PCI) beamline of Singapore Synchrotron Light and Source and at the B1 wavelength shifter beamline in NSSRC Hsinchu, Taiwan - allows the real-time analysis of a variety of phenomena on the micron and submicron scale. The practical examples concern materials science, industrial technology, medicine, the life sciences and other areas.

Source officielle

https://infoscience.epfl.ch/entities/publication/91239d0b-a5ce-462c-b221-32599caf0b4f

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Giorgio Margaritondo
2005
Journal Articles

Résumé

Source officielle

https://infoscience.epfl.ch/entities/publication/91239d0b-a5ce-462c-b221-32599caf0b4f

À propos de ce résultat

Concepts associés (14)

Phase-contrast imaging

Phase-contrast imaging is a method of that has a range of different applications. It measures differences in the refractive index of different materials to differentiate between structures under analysis. In conventional light microscopy, phase contrast can be employed to distinguish between structures of similar transparency, and to examine crystals on the basis of their double refraction. This has uses in biological, medical and geological science.

Phase-contrast X-ray imaging

Phase-contrast X-ray imaging or phase-sensitive X-ray imaging is a general term for different technical methods that use information concerning changes in the phase of an X-ray beam that passes through an object in order to create its images. Standard X-ray imaging techniques like radiography or computed tomography (CT) rely on a decrease of the X-ray beam's intensity (attenuation) when traversing the sample, which can be measured directly with the assistance of an X-ray detector.

Microscope à contraste de phase

thumb|Photographie d'un cellule épithéliale de joue vue par un Microscope à contraste de phase Le microscope à contraste de phase est un microscope qui exploite les changements de phase d'une onde lumineuse traversant un échantillon. Cet instrument fut développé par le physicien hollandais Frederik Zernike dans les années 1930, ce qui lui valut le prix Nobel de physique en 1953. Emilie Bleeker, physicienne reconnue pour le développement d'instruments, est la première à mettre le microscope à contraste de phase en utilisation.

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Tangentially viewing phase contrast imaging for turbulence measurements in toroidal fusion devices

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A Phase-contrast imaging (PCI) diagnostic provides measurements of line-integrated electron density fluctuations. Localisation along the laser beam path can be achieved with a spatial filter that selects the wave-vector directions of the fluctuations contr ...

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