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- Phase-contrast_X-ray_imaging abstract "Phase-contrast X-ray imaging (PCI) 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. In PCI however, the beam's phase shift caused by the sample is not measured directly, but is transformed into variations in intensity, which then can be recorded by the detector.In addition to producing projection images, PCI, like conventional transmission, can be combined with tomographic techniques to obtain the 3D-distribution of the real part of the refractive index of the sample. When applied to samples which consist of atoms with low atomic number Z, PCI is more sensitive to density variations in the sample than conventional transmission-based X-ray imaging. This leads to images with improved soft tissue contrast.In the last several years, a variety of phase-contrast X-ray imaging techniques have been developed, all of which are based on the observation of interference patterns between diffracted and undiffracted waves. The most common techniques are crystal interferometry, propagation-based imaging, analyzer-based imaging, edge-illumination and grating-based imaging (see below).".
- Phase-contrast_X-ray_imaging thumbnail Attenuation_and_phase_shift_of_electromagnetic_wave_propagating_in_medium_with_complex_index_of_refraction_n.png?width=300.
- Phase-contrast_X-ray_imaging wikiPageExternalLink gbpub.html.
- Phase-contrast_X-ray_imaging wikiPageID "35154335".
- Phase-contrast_X-ray_imaging wikiPageRevisionID "605146956".
- Phase-contrast_X-ray_imaging hasPhotoCollection Phase-contrast_X-ray_imaging.
- Phase-contrast_X-ray_imaging subject Category:Imaging.
- Phase-contrast_X-ray_imaging subject Category:Interferometry.
- Phase-contrast_X-ray_imaging subject Category:X-ray_instrumentation.
- Phase-contrast_X-ray_imaging comment "Phase-contrast X-ray imaging (PCI) 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.".
- Phase-contrast_X-ray_imaging label "Phase-contrast X-ray imaging".
- Phase-contrast_X-ray_imaging sameAs m.0pl1gt3.
- Phase-contrast_X-ray_imaging sameAs Q7180906.
- Phase-contrast_X-ray_imaging sameAs Q7180906.
- Phase-contrast_X-ray_imaging wasDerivedFrom Phase-contrast_X-ray_imaging?oldid=605146956.
- Phase-contrast_X-ray_imaging depiction Attenuation_and_phase_shift_of_electromagnetic_wave_propagating_in_medium_with_complex_index_of_refraction_n.png.
- Phase-contrast_X-ray_imaging isPrimaryTopicOf Phase-contrast_X-ray_imaging.
