An apparatus for radiological examination having a...

A - Human Necessities – 61 – B

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A61B 6/00 (2006.01) A61B 6/06 (2006.01) G03B 42/02 (2006.01) G21K 1/10 (2006.01)

Patent

CA 2252093

An apparatus for radiological examination is provided with the grid 16 that is driven in reciprocating motion in order to reduce the effect of radiation scattered by the body of the patient being irradiated. The grid 16 is connected to a counterweight 23, and is moved through a motion transmission mechanism that is of the crank and connecting-rod type so as to ensure a dynamic balancing of the oscillating masses. With this simple and accurate type of driving system, better quality radiographic images can be obtained under different adjustment and set-up conditions of the apparatus.

Un appareil d'examen radiologique est muni d'une grille (16) qui est animée d'un mouvement alternatif destiné à réduire l'effet des radiations déviées au cours de leur passage à travers le corps du patient soumis à l'irradiation. La grille (16) est reliée à un contrepoids (23), et est mue à l'aide d'un mécanisme de transmission du mouvement, à manivelle et à bielle, qui assure l'équilibrage dynamique des masses oscillantes. Ce type de système d'entraînement, à la fois simple et précis, permet d'obtenir des images radiographiques de meilleure qualité, avec différents réglages et dans différentes conditions de montage de l'appareil.

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