EP 0125962 B1 19881109 - X-RAY IMAGE INTENSIFIER AND ITS USE IN COMPUTED X-RAY IMAGE PROCESSING
Title (en)
X-RAY IMAGE INTENSIFIER AND ITS USE IN COMPUTED X-RAY IMAGE PROCESSING
Publication
Application
Priority
FR 8307183 A 19830429
Abstract (en)
[origin: US4645971A] The thickness of the layer of luminescent material on the edges of the screen at approximately 1/10 DEG from the edge of the image field is approximately 15 to 25% smaller than its thickness at the center of the screen. Thus the length of the x-ray path within the luminescent material is substantially the same irrespective of the angle of incidence of the x-rays on the screen and, when the x-ray energy varies, the sensitivity at all points of the screen varies substantially in the same manner. The screen in accordance with the invention is primarily employed in digital radiology systems in which the same image is produced several times by utilizing different x-ray energies.
IPC 1-7
IPC 8 full level
H01J 29/38 (2006.01); H01J 31/50 (2006.01)
CPC (source: EP US)
H01J 29/385 (2013.01 - EP US); H01J 31/50 (2013.01 - EP US); H01J 2231/50036 (2013.01 - EP US); H01J 2231/50063 (2013.01 - EP US)
Designated contracting state (EPC)
DE GB NL
DOCDB simple family (publication)
EP 0125962 A1 19841121; EP 0125962 B1 19881109; DE 3475141 D1 19881215; FR 2545270 A1 19841102; FR 2545270 B1 19851227; JP H0564413 B2 19930914; JP S59207551 A 19841124; US 4645971 A 19870224
DOCDB simple family (application)
EP 84400799 A 19840419; DE 3475141 T 19840419; FR 8307183 A 19830429; JP 8607884 A 19840427; US 60324484 A 19840423