EP 0693225 A1 19960124 - X-RAY DETECTOR FOR A LOW DOSAGE SCANNING BEAM DIGITAL X-RAY IMAGING SYSTEM
Title (en)
X-RAY DETECTOR FOR A LOW DOSAGE SCANNING BEAM DIGITAL X-RAY IMAGING SYSTEM
Title (de)
ROENTGENSTRAHLUNGSDETEKTOR FUER EINEN DIGITALEN, NIEDERDOSEN-RASTER-ROENTGENBILDWANDLER
Title (fr)
DETECTEUR DE RAYONS X DESTINE A UN SYSTEME D'IMAGERIE NUMERIQUE A RAYONS X A FAISCEAUX D'EXPLORATION ENTRAINANT UNE FAIBLE DOSE D'IRRADIATION
Publication
Application
Priority
- US 9403737 W 19940405
- US 4274293 A 19930405
Abstract (en)
[origin: WO9423458A2] A scanning beam digital x-ray imaging system according to the present invention includes an x-ray tube (10) having an electron beam source (161) and a target anode (50). Circuitry is provided for focussing the beam (164) and scanning the beam (20, 30) across the target anode (50) in a predetermined pattern such as a serpentine scan pattern. A collimating element (90), preferably in the form of a perforated grid containing an array of apertures (140), is interposed between the x-ray source (50) and an object to be x-rayed (80). The apertures (140) are oriented to form x-ray beams (100) converging at a detector array (110) on a plane (270) located a selected distance from the collimating element (90). That distance is selected to allow placing the object to be x-rayed (80) in between the collimating element (90) and the detector array (110). A segmented x-ray detector array (110) containing a rectangular matrix of detector elements (170) is located in the detection plane (270). A focal plane (280) is created which gives optimal resolution at a particular, selectable distance from the x-ray source (50).
IPC 1-7
IPC 8 full level
G21K 1/02 (2006.01); A61B 6/00 (2006.01); A61B 6/02 (2006.01); A61B 6/03 (2006.01); A61B 6/06 (2006.01); A61B 6/12 (2006.01); G01T 1/00 (2006.01); G01T 1/161 (2006.01); G01T 1/20 (2006.01); G01T 1/202 (2006.01); G01T 1/29 (2006.01); G03B 42/02 (2006.01); G06T 1/00 (2006.01); G21K 5/02 (2006.01); H01J 35/14 (2006.01); H01J 35/24 (2006.01); H01L 31/09 (2006.01); H04N 5/225 (2006.01); H05G 1/10 (2006.01); H05G 1/64 (2006.01)
CPC (source: EP US)
A61B 6/06 (2013.01 - EP); A61B 6/12 (2013.01 - EP); A61B 6/4028 (2013.01 - EP); A61B 6/4241 (2013.01 - EP); A61B 6/482 (2013.01 - EP); G01T 1/202 (2013.01 - EP); G01T 1/2971 (2013.01 - EP); H01J 35/153 (2019.04 - EP US); H05G 1/10 (2013.01 - EP); H05G 1/64 (2013.01 - EP); A61B 6/027 (2013.01 - EP); A61B 6/4042 (2013.01 - EP); A61B 6/4488 (2013.01 - EP)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9423458 A2 19941013; WO 9423458 A3 19941110; AU 6700694 A 19941024; CN 1041237 C 19981216; CN 1127553 A 19960724; EP 0693225 A1 19960124; EP 0693225 A4 19990623; IL 109143 A0 19940624; IL 109143 A 19990312; JP 2003265457 A 20030924; JP 2004261605 A 20040924; JP 3569526 B2 20040922; JP 4229859 B2 20090225; JP H08508431 A 19960910
DOCDB simple family (application)
US 9403737 W 19940405; AU 6700694 A 19940405; CN 94192143 A 19940405; EP 94927433 A 19940405; IL 10914394 A 19940328; JP 2003000662 A 20030106; JP 2004075258 A 20040316; JP 52247394 A 19940405