EP 0693225 A4 19990623 - 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)
Citation (search report)
- [A] US 4777643 A 19881011 - DEVINE JR THOMAS M [US]
- [A] US 5122422 A 19920616 - RODHAMMER PETER [AT], et al
- [A] US 4288697 A 19810908 - ALBERT RICHARD D
- [A] US 4079259 A 19780314 - BLUM ALVIN S
- [A] US 4383327 A 19830510 - KRUGER ROBERT A
- [A] US 4592080 A 19860527 - RAUCH WERNER [DE], et al
- [A] US 4573179 A 19860225 - RUTT BRIAN K [US]
- [A] US 4946238 A 19900807 - SASHIN DONALD [US], et al
- [A] US 4831263 A 19890516 - YAMASHITA TAKAJI [JP]
- [A] US 4464776 A 19840807 - ERKER JOSEPH W [US]
- [A] PATENT ABSTRACTS OF JAPAN vol. 017, no. 110 (E - 1329) 8 March 1993 (1993-03-08)
- See references of WO 9423458A2
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