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1. WO1997030459 - X-RAY EXAMINATION APPARATUS WITH X-RAY FILTER

Publication Number WO/1997/030459
Publication Date 21.08.1997
International Application No. PCT/IB1997/000089
International Filing Date 07.02.1997
IPC
G21K 1/10 2006.01
GPHYSICS
21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
KTECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
1Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
10Scattering devices; Absorbing devices
CPC
G21K 1/10
GPHYSICS
21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
KTECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
1Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
10Scattering devices; Absorbing devices; Ionising radiation filters
Applicants
  • PHILIPS ELECTRONICS N.V. [NL]/[NL]
  • PHILIPS PATENTVERWALTUNG GMBH [DE]/[DE] (DE)
  • PHILIPS NORDEN AB [SE]/[SE] (SE)
Inventors
  • GEITTNER, Peter, Ernst, Eckart
  • LINDERS, Petrus, Wilhelmus, Johannes
  • LYDTIN, Hans-Jürgen
Agents
  • COHEN, Julius, S.
Priority Data
96200360.414.02.1996EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) X-RAY EXAMINATION APPARATUS WITH X-RAY FILTER
(FR) APPAREIL D'EXAMEN RADIOLOGIQUE ET FILTRE A RAYONS X
Abstract
(EN)
The X-ray examination apparatus comprises an X-ray filter for locally attenuating the X-ray beam. The X-ray filter includes a plurality of filter elements. The X-ray absorptivity of each filter element is controlled by the amount of X-ray absorbing liquid with which the filter element is filled. The filling of filter elements is controlled by a voltage. The X-ray absorbing liquid contains a suspension of very small X-ray absorbing particles.
(FR)
L'appareil d'examen radiologique selon l'invention comporte un filtre à rayons X destiné à atténuer localement le faisceau des rayons X. Ce filtre comprend plusieurs éléments dont la capacité d'absorption des rayons X dépend de la quantité de liquide absorbant les rayons X présente dans l'élément. Le remplissage des éléments du filtre est fonction d'une certaine tension. Le liquide absorbant les rayons X contient de très petites particules absorbant les rayons X en suspension.
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