EP 1119864 A1 20010801 - BEAM HARDENING FILTER FOR X-RAY SOURCE
Title (en)
BEAM HARDENING FILTER FOR X-RAY SOURCE
Title (de)
STRAHLUNGSHÄRTENFILTER FÜR EINE RÖNTGENSTRAHLUNGSQUELLE
Title (fr)
FILTRE DE D'AUGMENTATION DE LA DURETE D'UN FAISCEAU, DESTINE A UNE SOURCE DE RAYONS X
Publication
Application
Priority
- US 9922800 W 19990930
- US 16763998 A 19981006
- US 16763898 A 19981006
Abstract (en)
[origin: WO0021096A1] An x-ray beam hardening filter (100) is disclosed. The X-ray beam hardening filter (100) comprises a support member (110) and a beam hardening sheet (120), the beam hardening sheet (120) having a multidimensional array of regularly spaced apertures (130). The apertures (130) are configured to have an x-ray transmissive quality. An actuator (300), engaging the support member (110), is capable of moving the multidimensional array of apertures (130) into or out of a path of an X-ray beam, thereby selectively introducing varying levels of X-ray energy filtration. In one embodiment, multiple layers of beam hardening sheets (610, 620) are added to the X-ray beam hardening filter (100) to create additional levels of X-ray energy filtration. Advantages of the X-ray beam hardening filter (100) include the relatively small distance the X-ray beam hardening filter (100) must move in order to absorb the incident X-ray beam, the ability to introduce varying levels of X-ray filtration, and the compact structure of the X-ray beam hardening filter (100).
IPC 1-7
IPC 8 full level
G21K 3/00 (2006.01); A61B 6/00 (2006.01); G21K 1/00 (2006.01); G21K 1/10 (2006.01)
CPC (source: EP)
G21K 1/10 (2013.01)
Citation (search report)
See references of WO 0021096A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0021096 A1 20000413; WO 0021096 A9 20000824; AU 6504699 A 20000426; EP 1119864 A1 20010801; IL 142370 A0 20020310; JP 2003517577 A 20030527
DOCDB simple family (application)
US 9922800 W 19990930; AU 6504699 A 19990930; EP 99953008 A 19990930; IL 14237099 A 19990930; JP 2000575133 A 19990930