PROCEDE D'AMELIORATION DE CONTRASTE/LUMINOSITE D'IMAGES RADIOGRAPHIQUES

A method and apparatus for improving angiographic images to be used with a radiography device comprising an X-ray source, a device for recording an image and an object positioned so as to present a region of interest to be imaged. The method comprises a) acquisition of a series of successive images...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	NICOLAS FRANCOIS SERGE, LIENARD JEAN
Format:	Patent
Sprache:	fre
Schlagworte:	ACCESSORIES THEREFOR APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM CALCULATING CINEMATOGRAPHY COMPUTING COUNTING DIAGNOSIS ELECTRIC COMMUNICATION TECHNIQUE ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY ELECTROGRAPHY HANDLING RECORD CARRIERS HOLOGRAPHY HUMAN NECESSITIES HYGIENE IDENTIFICATION IMAGE DATA PROCESSING OR GENERATION, IN GENERAL MEASUREMENT OF NUCLEAR OR X-RADIATION MEASURING MEDICAL OR VETERINARY SCIENCE PHOTOGRAPHY PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION PRESENTATION OF DATA RECOGNITION OF DATA RECORD CARRIERS SURGERY TESTING X-RAY TECHNIQUE
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	A method and apparatus for improving angiographic images to be used with a radiography device comprising an X-ray source, a device for recording an image and an object positioned so as to present a region of interest to be imaged. The method comprises a) acquisition of a series of successive images of the region of interest; b) determination of a map image from the series of images; c) determination of a set of parameters characterizing a Gaussian distribution function that models the distribution of the grey levels of the map image; d) determination of a brightness and/or contrast improvement function; and e) application of the improvement function to the series of images in a subtractive mode.