Patent application number | Description | Published |
20080205738 | Method and Apparatus for Calibration and Correction of Gray Levels in Images - A method and apparatus for calibrating an apparatus that acquires a sequence of radiographic images and correcting images of an object under observation. For each image of a sequence acquired by the apparatus and for a given frequency of acquisition of the sequence, the apparatus is calibrated by determining the value of the variation of a mean of gray levels in at least one zone of interest of the current image of at least one calibration device, the variation being determined relative to the mean gray level of the first image of the sequence in each zone of interest. The determination of the variation is reiterated for a series of images sequences acquired using calibration devices resulting in first images of mean gray levels different from one sequence to another. Each image of an image sequence of the object under observation is corrected, comprising zones of observation having different gray levels by subtracting from the current image the variation of one gray level relative to the first image of the object, the subtraction being a function of the gray level considered from each zone of observation. | 08-28-2008 |
20090304253 | METHOD OF PROCESSING RADIOLOGICAL IMAGES, AND, IN PARTICULAR, MAMMOGRAPHIC IMAGES - A method of processing a radiological image of an organ. The method may comprise generating a recombined image (R) from at least one previously acquired low energy image (L) and one high energy image (H) of a portion of the organ. The recombined image comprises a background and one or more areas corresponding to the presence of a contrast medium in the organ. The method may further comprise correcting the recombined image (R) by compensating (C) for the nonuniformities present in the background to obtain a compensated recombined image in which the background has a substantially uniform grey level. | 12-10-2009 |
20090304256 | METHOD OF EXTRAPOLATING A GREY-LEVEL BIDIMENSIONAL IMAGE IN A RADIOGRAPHY DEVICE AND A RADIOGRAPHY DEVICE IMPLEMENTING SUCH A METHOD - A method of extrapolating a bidimensional grey-level image using a radiography device. | 12-10-2009 |
20110019891 | MEDICAL IMAGING PROCESS FOR TRIPLE-ENERGY MODELING, AND DEVICE FOR IMPLEMENTING SUCH A PROCESS - A method for X-ray imaging of a body using an imaging device comprising an image sensor and an X-ray emitter which operates at different emission spectra, wherein the method includes: acquiring a first image resulting from the passage through the body of X-rays emitted by the X-ray emitter with a first emission spectrum; calculating characteristics of the body on the basis of the first image, and calculating a second and a third emission spectrum based on the characteristics of the body, wherein the first, second and third emission spectra are distinct from one another; acquiring a second and third image resulting from the passage through the body of X-rays emitted by the X-ray emitter with the second and third emission spectrum respectively; and modeling the body by generating thickness charts for different materials comprising the body on the basis of the three images. | 01-27-2011 |
20110150178 | METHOD FOR PROCESSING TOMOSYNTHESIS ACQUISITIONS IN ORDER TO OBTAIN A REPRESENTATION OF THE CONTENTS OF AN ORGAN - A method for processing tomosynthesis images of an object of interest, using an imaging system, the imaging system comprising an X-ray source positioned facing a detector on which the object of interest is positioned. With the method of an embodiment of the invention, it is possible to obtain a representation of the contents of an organ. | 06-23-2011 |
20120045111 | IMAGE PROCESSING METHOD TO DETERMINE SUSPECT REGIONS IN A TISSUE MATRIX, AND USE THEREOF FOR 3D NAVIGATION THROUGH THE TISSUE MATRIX - A method to generate a final image with a medical imaging system, wherein the final image highlights suspect regions in a tissue matrix and wherein the final image is generated from a first image and from previously acquired images of the tissue matrix is provided. The method comprises: creating a 3D map of suspicion from the previously acquired medical images; generating a 2D map of suspicion by projecting all or part of the 3D map of suspicion onto a plane from a point reproducing the conditions of acquisition of the first image; and generating a final 2D image of the tissue matrix from the first image and/or from the 2D map of suspicion, wherein the final 2D image highlights suspect regions in the tissue matrix. | 02-23-2012 |
20120207283 | TEST PHANTOM FOR TOMOGRAPHIC IMAGING AND NOTABLY FOR BREAST TOMOSYNTHESIS - A test phantom for tomographic imaging, the phantom comprising an assembly of elementary structures defining a 3D mesh, wherein each elementary structure comprises a chief constituent material corresponding to an X-ray attenuation simulating a glandularity, wherein the elementary structures are in at least two types of chief constituent materials corresponding to different X-ray attenuations. | 08-16-2012 |
20130044861 | METHOD FOR ACQUIRING MORPHOLOGY OF A BREAST - An imaging method performed by a device comprising an X-ray emitting source, a receiver positioned facing the source, and a support on which a subject or organ to be imaged is positioned, the method comprises defining a first set of orientations of the source and a second set of orientations of the source, and acquiring images at the defined orientations of the source, wherein if the first set of orientations comprises an orientation that the second set of orientations does not comprise, only one image is acquired at the orientation, and if both the first set of orientations and the second set of orientations comprise the same orientation, at least two images are acquired at distinct acquisition parameters at the orientation. | 02-21-2013 |