Mathematical foundations of phase-contrast computed tomography

Author

Bronnikov, Andrei V.

Author_Institution

KEMA, Arnhem, Netherlands

Volume

3

fYear

2000

fDate

2000

Abstract

Gabor´s idea of in-line holography, which was proposed in 1948, has recently found application in phase-contrast imaging with X-rays. In particular, third generation synchrotron radiation sources make it possible to detect weak perturbations of X-ray wavefronts arising due to variations of the index of refraction in the investigated medium. This enables one to visualize the differences in refraction properties of materials, rather than the differences absorption as was done in the entire history of X-ray imaging. Also, as has recently been reported, phase-contrast imaging can be implemented with a more conventional polychromatic X-ray microfocus source

Keywords

Radon transforms; X-ray imaging; X-ray optics; computerised tomography; holography; image reconstruction; synchrotron radiation; Fresnel diffraction; Radon transform; X-ray wavefronts; in-line holography; phase-contrast computed tomography; phase-contrast imaging; polychromatic X-ray microfocus source; reconstruction algorithm; refractive index variations; third generation SR sources; weak perturbations; Computed tomography; Electromagnetic wave absorption; Holography; Optical imaging; Radiation detectors; Synchrotron radiation; Visualization; X-ray detection; X-ray detectors; X-ray imaging;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2000 IEEE

Conference_Location

Lyon

ISSN

1082-3654

Print_ISBN

0-7803-6503-8

Type

conf

DOI

10.1109/NSSMIC.2000.949278

Filename

949278