Method and device for triggering of x-ray image sensor

H - Electricity – 05 – G

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H05G 1/38 (2006.01) A61B 6/14 (2006.01) H05G 1/44 (2006.01) H05G 1/60 (2006.01)

Patent

CA 2110597

The present invention demonstrates a method and a device in the technique of using an image sensing member, preferably a CCD ("Charge Couple Device") cell instead of a film sensitive to X-ray radiation. The method and the device is applicable to a general X-ray arrangement without any necessary direct connection between the image sensing member and the X-ray arrangement. A number of detector points for X-ray radiation are provided at or in the CCD cell. The method and device of the present invention result in minimizing of the radiation dose to exactly that which is needed for exact imaging exposure of an image, and therefore more images may be obtained within the same total normal radiation dose.

Procédé et dispositif concernant la technique d'utilisation d'un élément capteur d'images, de préférence une cellule à charge couplée au lieu d'un film sensible aux rayons X. Ce procédé et dispositif peuvent s'appliquer à un appareil radiographique sans qu'une liaison directe soit nécessaire entre l'élément capteur d'images et l'appareil radiographique, en utilisant un certain nombre de points de détection pour les rayons X au niveau de la cellule à charge couplée ou dans cette dernière. De plus, un procédé et un dispositif permettant d'abaisser la dose de rayonnement au niveau exact nécessaire pour l'exposition d'une image, ce qui implique, selon la présente invention, que l'on puisse obtenir plus d'images pour une même dose de rayonnement normale totale, est également décrit.

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