General Electric Cgr S.a.

Marco Tirelli

Rene Romeas

Yves Gregoire

Didier Rouchy

Jean-Claude Rapeau

Disclosed is a radiology system of the mammograph type in which there is provision for a radiation controller. The invention lies in the fact that the input aperture of the detector is masked by a belt that absorbs the X-radiation except at zones, the variable dimensions of which are designed to get adapted to the different shapes of breasts. The belt is driven by a motor 24 and stops at the practitioner's command so that the appropriate zone is in correspondence with the input aperture of the detector 22.

Radiation control device with variable active surface of the type

Disclosed is a radiology system of the mammography type wherein there is provision for a radiation controller having a detector of X-radiation having gone through the breast to be observed, of the type having a converter of X-radiation into photon radiation and a photomultiplier tube for the amplifications of photons emitted by the converter. The invention lies in the fact that the converter is masked by a belt opaque to the photon radiation except in the zones for which variable dimensions are planned so as to get adapted to the different shapes of breasts. The belt is driven by a motor which is turned on and off at the practitioner's command, so that the appropriate zone is in correspondence with the converter.

Radiation control device with variable active surface

The invention relates to mammographs, and more particularly to a device enabling the mammograph to adapt to different sizes of a cassette, and to displace cassettes. The device essentially comprises a sliding member which, when moved, changes the distance between holding pegs to match new lateral dimensions of a the cassette while still pressing the cassette against a reference edge of the table. In addition, the sliding member is carried on a plate member which moves in such a manner that one or other of the side edges of the cassette can be brought into alignment with the corresponding side of the table.

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Villebon sur Yvette, France

Marco Tirelli