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1. US20130208864 - Differential phase-contrast imaging

Office États-Unis d'Amérique
Numéro de la demande 13878767
Date de la demande 12.10.2011
Numéro de publication 20130208864
Date de publication 15.08.2013
Numéro de délivrance 10028716
Date de délivrance 24.07.2018
Type de publication B2
CIB
A61B 6/00
ANÉCESSITÉS COURANTES DE LA VIE
61SCIENCES MÉDICALE OU VÉTÉRINAIRE; HYGIÈNE
BDIAGNOSTIC; CHIRURGIE; IDENTIFICATION
6Appareils pour diagnostic par radiations, p.ex. combinés avec un équipement de thérapie par radiations
G21K 1/06
GPHYSIQUE
21PHYSIQUE NUCLÉAIRE; TECHNIQUE NUCLÉAIRE
KTECHNIQUES NON PRÉVUES AILLEURS POUR MANIPULER DES PARTICULES OU DES RAYONNEMENTS IONISANTS; DISPOSITIFS D'IRRADIATION; MICROSCOPES À RAYONS GAMMA OU À RAYONS X
1Dispositions pour manipuler des particules ou des rayonnements ionisants, p.ex. pour focaliser ou pour modérer
06utilisant la diffraction, la réfraction ou la réflexion, p.ex. monochromateurs
G01N 23/04
GPHYSIQUE
01MÉTROLOGIE; TESTS
NRECHERCHE OU ANALYSE DES MATÉRIAUX PAR DÉTERMINATION DE LEURS PROPRIÉTÉS CHIMIQUES OU PHYSIQUES
23Recherche ou analyse des matériaux par l'utilisation de rayonnement (ondes ou particules), p.ex. rayons X ou neutrons, non couvertes par les groupes G01N3/-G01N17/201
02en transmettant la radiation à travers le matériau
04et formant des images des matériaux
G01T 7/00
GPHYSIQUE
01MÉTROLOGIE; TESTS
TMESURE DES RADIATIONS NUCLÉAIRES OU DES RAYONS X
7Détails des instruments de mesure des radiations
CPC
A61B 6/4092
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
40with arrangements for generating radiation specially adapted for radiation diagnosis
4064specially adapted for producing a particular type of beam
4092for producing synchrotron radiation
A61B 6/4291
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
42with arrangements for detecting radiation specially adapted for radiation diagnosis
4291the detector being combined with a grid or grating
A61B 6/4441
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
44Constructional features of apparatus for radiation diagnosis
4429related to the mounting of source units and detector units
4435the source unit and the detector unit being coupled by a rigid structure
4441the rigid structure being a C-arm or U-arm
A61B 6/484
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
48Diagnostic techniques
484involving phase contrast X-ray imaging
G01N 2223/064
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
2223Investigating materials by wave or particle radiation
05by diffraction, scatter or reflection
064interference of radiation, e.g. Borrmann effect
G01N 2223/1016
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
2223Investigating materials by wave or particle radiation
10Different kinds of radiation or particles
101electromagnetic radiation
1016X-ray
Déposants Ewald Rössl
KONIKLIJKE PHILIPS N.V.
Inventeurs Ewald Rössl
Mandataires Larry Liberchuk
Données relatives à la priorité 10187976 19.10.2010 EP
Titre
(EN) Differential phase-contrast imaging
Abrégé
(EN)

The present invention relates to differential phase-contrast imaging, in particular to a structure of a diffraction grating, e.g. an analyzer grating and a phase grating, for X-ray differential phase-contrast imaging. In order to make better use of the X-ray radiation passing the object, a diffraction grating (14) for X-ray differential phase-contrast imaging is provided with at least one portion (24) of a first sub-area (26) and at least one portion (28) of a second sub-area (30). The first sub-area comprises a grating structure (54) with a plurality of bars (34) and gaps (36) being arranged periodically with a first grating pitch P G (38), wherein the bars are arranged such that thy change the phase and/or amplitude of an X-ray radiation and wherein the gaps are X-ray transparent. The second sub-area is X-ray transparent and wherein the at least one portion of the second sub-area provides an X-ray 1 transparent aperture (40) in the grating. Portions of the first and second sub-areas are arranged in an alternating manner in at least one direction (42).