General Electric Cgr S.a.

Ge Medical Systems

Catherine Picard

Yves Lucien Trousset

Anne Rougee

Vincent Leclerc

Didier Saint-Felix

Didier Saint Felix

Blandine Lavayssiere

A phantom constituted by a helix is used. This helix enables an automatic geometrical calibration of any X-ray imaging system that uses a plane detector.

Device and automatic method for the geometrical calibration of an X-ray

Process for the correction of distortions in radiological images

In voludensitometry and in cases in which it is necessary to acquire only a small number of views, the artifact ratio resulting from reconstructions is reduced. There is acquired at least one view of the object to be reconstructed, the principal direction of irradiation of which is oriented substantially at right angles to a plane formed by or containing the other directions of irradiation corresponding to the other views.

Method for acquisition of radiological data in multiple orthogonal

In order to represent the bone structure of a patient's body, acquisitions are made with different irradiation energies. The irradiations are compared with these two energies in order to deduce a two-dimensional projected image which is representative of the bone structure alone. To this end, there is assigned to each pixel in the projected images a value corresponding to the thickness of bone traversed by an x-ray which has terminated at said pixel. This value is obtained by calibrating the measuring system, detector cell by detector cell, so as to correct the spatial non-uniformities of the acquisition system.

Method for calibrating the measuring system of an X-ray apparatus

Growing community of inventors

Boulogne, France

Catherine Picard